© Copyright Australian Museum, 2002 Records of the Australian Museum (2002) Vol. 54: 313–324. ISSN 0067-1975 Bandella, A New Hilarine Fly Genus from Australia (Diptera: Empididae) DANIEL J. BICKEL Australian Museum, 6 College Street, Sydney NSW 2010, Australia [email protected] ABSTRACT. Bandella n.gen. (Diptera: Empididae: Empidinae: Hilarini) is described from mainland Australia and Tasmania, and comprises nine new species: B. albitarsis, B. cerra, B. allynensis, B. costalis, B. duvalli, B. maxi, B. montana, B. noorinbee, and B. tasmanica. Bandella is distinguished from other genera in the Hilarini by the following combination of characters: mesonotum glabrous, without pruinosity, but with diagnostic colour patterns; mesonotal vestiture highly reduced, comprising only short setulae; male tarsus I unmodified; and male abdominal terga 7 and 8 reduced or modified to form flaps so that hypopygium can be flexed forward. The genus is distinctive in having an almost fully formed vein CuP running lengthwise across the centre of cell cup. Although vein CuP is part of the wing groundplan in Diptera, it has variable expression in the lower Brachycera. In other Empididae, this vein is either residual and positioned closely posteriad of vein CuA , or totally absent. Also, Bandella has a 2 divided and sclerotised male cercus, a character also shared by the endemic Tasmanian hilarine genus Cunomyia Bickel. Bandella has a predominately temperate Bassian distribution: Tasmania, southeastern and southwestern Australia, with an outlying species in submontane rainforest of tropical Queensland. BICKEL, DANIEL J., 2002. Bandella, a new hilarine fly genus from Australia (Diptera: Empididae). Records of the Australian Museum 54(3): 313–324. This is the third contribution to a revision of the Australian Materials and methods Hilarini (Diptera: Empididae: Empidinae) (see Bickel, 1996, 1998). This tribe is taxonomically rich in Australia, with This study is based on material housed in major Australian hundreds of species awaiting description, especially in the and overseas collections (see Acknowledgements for list complex of genera similar to the cosmopolitan genus Hilara. of repositories and their abbreviations). Morphological This short paper describes Bandella, a distinctive new terminology follows McAlpine (1981) except that of the genus comprising nine new species: eight are from male terminalia, which follows Cumming et al. (1995). temperate Australia and one is from submontane rainforest Measurements are in millimetres and based on represent- in the Queensland wet tropics. It is distinguished by a ative dry specimens. The position of features on elongate strongly developed vein CuP, a thorax almost totally devoid structures such as leg segments is given as a fraction of the of major setae but with shining patterned cuticle, an total length, starting from the base. The relative lengths of unswollen (i.e., unmodified) male basitarsis I, and by a the podomeres are representative ratios and not measure- tendency to curl the distal tarsomeres on all legs (dried ments, and are presented in the following formula and specimens). Bandella is morphologically isolated with punctuation: trochanter + femur; tibia; tarsomere 1/ 2/ 3/ 4/ 5. respect to other genera in the Hilarini, although it possibly The following abbreviations and terms are used is closest to the Tasmanian hilarine genus Cunomyia Bickel, (museums and other collections are listed in Acknowledg- as both genera share a divided male cercus. ments): FSSC, female secondary sexual character(s), the www.amonline.net.au/pdf/publications/1369_complete.pdf 314 Records of the Australian Museum (2002) Vol. 54 non-genitalic characters found only on female body; MSSC, Legs. All tarsi with strong black claws and large yellowish male secondary sexual character(s), the non-genitalic pulvilli; tarsi often curled in repose in dried specimens; FI characters found only on male body; I, II, III: pro-, meso-, and TI mostly with short vestiture; TI without distinct metathoracic legs; C, coxa; T, tibia; F, femur; ac, acrostichal anteroapical comb, although some species have irregular setae; ad, anterodorsal; av, anteroventral; dc, dorsocentral setal row of variable length; male It not swollen; TI and 1 setae; dv, dorsoventral; pd, posterodorsal; pv, postero- each tarsomere It with 2–3 pairs of subapical av-pv setae, 1–3 ventral; t, tarsus; t , tarsomeres 1 to 5. Geographical and It with dense ventral vestiture; TII with pair strong 1–5 1–3 abbreviations: FR, Flora Reserve; NP, National Park; NR, av-pv setae; each tarsomere IIt with apical setae; IIt 1–3 2–5 Nature Reserve; SF, State Forest. each slightly flattened with pale ventral pile; FIII weakly expanded in distal third; TIII without strong setae. Genus Bandella n.gen. Wing (Fig. 3b); membrane hyaline; costa circumambient, Type species. Bandella allynensis n.sp. although reduced in thickness along posterior margin; Sc distinctly incomplete; R slightly swollen near join with 1 Diagnosis. Flies in the tribe Hilarini; mesonotum glabrous, costa, and brownish stigma present under distal R ; costa 1 without pruinosity, but with species diagnostic colour haired, but other veins bare; R branched, with R 4+5 4 patterns present; mesonotum with ac and dc reduced to diverging at 45° and slightly sinuate, and R ending behind 5 setulae, and posterior slope covered with field of scattered wing apex; M , M , and CuA all joining margin; CuA , 1 2 1 2 setulae; tibia I without distinct anteroapical comb; male which closes cell cup, strongly recurrent; vein CuP present basitarsus not swollen; costa circumambient, although as almost fully formed vein across cell cup; A present 1 reduced in thickness along posterior margin; Sc incomplete; distally only as fold, and arising midway along cell cup; A 2 R4+5 branched, with R4 diverging at 45° angle and slightly present as trace; anal angle weak to absent; lower calypter sinuate, and R5 ending behind wing apex; CuA2, strongly yellowish with yellow setae; halter yellow. recurrent; vein CuP present as distinct vein across cell cup; abdomen terga without strong marginal setae; tergum 7 often Abdomen. Cuticle glabrous, with little pruinosity; tergum with U-shaped median excavation; tergum 8 usually with 1 with some pale setae laterally, otherwise abdomen with lateral flaplike projections; hypopygium can flex anteriad only short yellowish vestiture, without strong marginal at rest; male cercus divided into short basal plate and setae; tergum 1 relatively short with membranous median digitiform clasping cercus. window; abdominal plaques present on terga 2–5; tergum 7 often with U-shaped median excavation; tergum 8 usually Description. Rather large, body length 7.0–11.5. with lateral flaplike projections (e.g., 4b,c); hypopygium can flex anteriad at rest; male cercus distinct and divided Head spheroidal, with convex post-cranium; post-cranium into sclerotised short basal cercal plate and digitiform sometimes with distinctive pruinosity, vertex and frons clasping cercus; hypandrium keel-like; aedeagus elongate usually shining with little pruinosity; major setae absent; and conforming to curvature of hypandrium, epandrium postcranium with scattered pale ventral hairs, postorbitals broad, with distal curved projection; distinct surstylus not short; postvertical setae very short, black; ocellar triangle evident. not distinctly raised; ocellar setae reduced to short hairs; frons slightly narrower than ocellar triangle, and with very Female oviscapt relatively unmodified, with subequal terga short hairs along lateral margins; eyes notched laterad of and sterna on segments 9 and 10, and with pair elongate antennae; face as wide as frons and slightly expanded apical cerci (Fig. 3f). apically, often covered with pruinosity; palp yellow with white setae, curved and slightly clavate; labrum tapering Etymology. Bandella means “little Banda”, a diminutive and heavily sclerotised, about one and a half head height in derived from Mt Banda Banda, a New South Wales locality length, and projecting ventrally; labellum separated from where the genus occurs. The gender is feminine. and subequal with labrum; antenna (Fig. 3c) scape about twice as long as pedicel; first flagellomere tapering, longer Remarks than scape and pedicel combined, and with short 2–articled apical style. Bandella comprises nine species from mainland Australia and Tasmania. Species occur mostly in wet sclerophyll Thorax. Mesonotum glabrous, without pruinosity, but eucalypt forests and rainforests, and mostly at higher pleura with pruinosity; mesonotum with species diagnostic altitudes. Although the genus has an essentially temperate colour patterns present, usually similar in both sexes, but Australian or Bassian distribution of southeastern and sometimes sexually dimorphic; mesonotum with only short southwestern Australia and Tasmania, one species occurs setulae and apart from following major setae: 2 posterior above 1000 m in submontane rainforest in tropical notopleural (npl) setae, 1 short postalar (pa) seta, and 1 short Queensland. posterior intra-alar seta: ac band 3–4 setulae wide, with bare Bandella is best placed in the Hilarini, as discussed in cuticle each side of this band; remainder of mesonotum, the next section. It is confined to Australia, and is not close including posterior slope covered with field of scattered to any described genus from temperate Gondwanan regions: short setulae; prothoracic collar (pronotum) with some short New Zealand (Collin, 1928), Patagonia (Collin, 1933) and setae; proepisternum with field of 8–10 pale hairs; scutellum southern Africa (Smith, 1969). However, based on a shared rather weakly developed and with pair of median marginal character, the divided sclerotised male cercus, Bandella setae and some adjacent short lateral setae; laterotergite bare; possibly has a distant relationship with the endemic postnotum broad and bulging. Tasmanian genus Cunomyia Bickel. Bickel: a new empidid fly genus 315 Bandella has a glabrous thorax with strong colour There is good evidence of adult nectar feeding in the patterns, and almost all major dorsal thoracic setae are genus. Bandella duvalli was collected off the nectar-rich reduced to setulae. By contrast, most other hilarines have a blossoms of Leptospermum (Myrtaceae) bushes in pruinose thoracic surface, and at least some strong thoracic Tasmania, and Leptospermum pollen was found on the setae, especially the anterior dc. Variation is evident in the thoracic pattern of some Bandella species, which may reflect age, nature of preservation or intraspecific variation. For example, the strong contrast between yellow and dark brown on some specimens may be obscured by a general infuscation of the entire specimen, possibly a direct function of age (e.g., Figs. 2h,i). Although the thoracic patterns are usually the same in both sexes, they are sometimes strikingly dimorphic, as in B. noorinbee (Fig. 2d,e). However, the basic contrasting thoracic pattern as suggested by the figures remains diagnostic for each species and is useful in identifying females. The male postabdomen is variously modified to receive the deflexed hypopygium. In all species except B. maxi tergum 7 is medially excavated, and in some species tergum 8 has lateral flap-like projections (Fig. 4b,c). In dried specimens of Bandella, particularly B. costalis, B. duvalli, B. montana, and B. tasmanica, the tarsi are distinctly curled in repose, as in Fig. 1. Figure 1. Bandella duvalli, (cid:1), habitus. Mt Pelion, Tasmania. 316 Records of the Australian Museum (2002) Vol. 54 Figure 2. Dorsal thoracic colour pattern, Bandella spp. a, B. allynensis (cid:1); b, B. cerra (cid:1); c, B. montana (cid:1); d, B. noorinbee (cid:1); e, B. noorinbee (cid:2); f, B. albitarsis (cid:1); g, B. maxi (cid:1); h, B. duvalli (cid:1) (holotype); i, B. duvalli (cid:1) (variant); j, B. tasmanica (cid:1); k, B. costalis (cid:1). proboscis of B. albitarsis in New South Wales. Nectar Morphological notes and feeding is well known among the Empidinae (e.g., Chvála, systematic position of Bandella 1976). Specimens of B. allynensis have also been taken on sticky traps placed on smooth barked Eucalyptus trunks, I presented (Bickel, 1996) a set of characters useful in which indicates adults occasionally rest on tree trunks. separating the two major tribes of the Empidinae, the Mating behaviour is unknown. Males do not have Empidini and the Hilarini. Since many characters are swollen fore basitarsi producing silk for wrapping nuptial variable in expression and must be qualified, higher level gifts characteristic of the complex of genera near Hilara. taxa have to be defined as a mosaic of characters, a Of particular interest are the bright silvery pruinose patches “polythetic classification,” no character necessarily being present on the head, thorax and legs of both sexes of diagnostic for all members (Gauld & Mound, 1982). As so Bandella albitarsis. These silvery patches may facilitate defined, Bandella has the following set of characters that place sexual recognition in flight, especially since incident light it in the Hilarini: laterotergite bare; hypandrium forming a would make them appear to “flash” while turning. curved convex hood over aedeagus; costa circumambient; vein R distinctly swollen before it joins the costa. Bandella does 1 not have the following hilarine characters: tibia I with anteroapical comb of 8–10 short even setae; male cercus small Bickel: a new empidid fly genus 317 and desclerotised, and fused laterally with the surstylus and is plesiomorphic to the Diptera as a whole and part ground epandrium; male basitarsus I enlarged or swollen. plan for the Diptera wing (McAlpine, 1981), but its With the large number of undescribed taxa in the Hilarini, expression is variable in the lower Brachycera. For example, both in Australia and throughout the world, it is premature it is variously developed in the Asiloidea, but usually weak to attempt any phylogenetic analysis of the tribe. However, and just behind vein CuA . 2 two important morphological characters should be Cercus. Most male Hilarini have a cercus which is rather discussed—vein CuP and the male cercus. small, desclerotised, and fused laterally with the surstylus Vein CuP. Bandella is distinctive in having an almost and epandrium (Cumming & Sinclair, unpubl. data). fully formed vein CuP running lengthwise across the centre Bandella, by contrast, has an enlarged sclerotised male of cell cup (Fig. 3b), and not posteriorly close to vein CuA cercus, which is divided into a distinctive digitiform 2 or vestigial as found in some other empidids (e.g., “clasping cercus” and smaller “cercal plate” (see Fig. 4b). Brachystoma and some Empis, figures in Chvála, 1983). This cercal form is similar to that of the monotypic However vein CuP is absent in Hilara, most Empis spp. Tasmanian genus Cunomyia Bickel (see Sinclair, 1995 and and the Trichopezinae. By contrast in Bandella, CuP is Bickel, 1998 for further discussion), and this shared strongly developed in all species, although it looks almost character indicates a possible close phylogenetic relation- like a vena spuria, and not carrying haemolymph. Vein CuP ship between these two Australian genera. Key to species of Bandella (males) 1 Abdomen almost entirely shining black with violet reflections, with at most some lateral yellow colour on tergum 1................................................................... 2 ——Abdomen with some red, brown or yellow terga.......................................................................... 3 2 Large, length >10.0; thoracic pattern, mesonotum mostly orange, but black over posterior slope, scutellum mostly orange, Fig. 2c; legs mostly yellow; hypopygium (Fig. 3d) mostly yellow (NSW, Vic.)...................................................................................................................... B. montana n.sp. ——Small, length <7.5; male mesonotum and scutellum black, Fig. 2d (female thorax completely orange, Fig. 2e); scutellum black; coxae yellow; remainder of legs dark brown to black; hypopygium (Fig. 3e) black (Vic., NSW)............................................................................... B. noorinbee n.sp. 3 Post-cranium with silvery pruinose band around outer rim; thoracic pattern, Fig. 2f; pleuron with bright silvery pruinose areas; It 2–5 white; IIIt pale yellow; abdomen, including hypopygium mostly 2–5 yellow (NSW) ..................................................................................................... B. albitarsis n.sp. ——Head and thorax without silvery pruinosity; tarsus I yellow to black, but not white........................................................................................................................ 4 4 TII and tarsus II with long anterior and posterior setae, Fig. 5e; mesonotum and scutellum almost entirely black, Fig. 2k; FIII slightly clavate in distal half; abdominal terga yellow with black posterior border (WA)............................................................................................ B. costalis n.sp. ——Legs without long setae, only with normal short vestiture; mesonotum with some red, yellow or brown colouration; FIII and abdomen variously developed....................................................................................................... 5 5 TIII banded, with yellow apex and base, and dark brown median band (as in Fig. 1) (Tas.)................................................................................................................ 6 ——TIII either entirely yellow or yellow with dark brown apex (Aust. mainland)........................................................................................................................................ 7 6 Coxae dark brown/black; anterior mesonotum mostly red-brown; posterior mesonotum black with interdigitation of red anteriorly (Fig. 2h,i); FIII yellowish in basal half but distally dark brown; tarsus III dark brown; hypopygium (Fig. 4b,c) mostly black................................ B. duvalli n.sp. ——Coxae mostly yellow; anterior mesonotum mostly orange; with black ac band and black spot laterad of dc row (Fig. 2j); FIII mostly red-yellow; tarsus III entirely yellow; hypopygium (Fig. 4a) mostly yellow except for dark brown apex................................................................... B. tasmanica n.sp. 318 Records of the Australian Museum (2002) Vol. 54 7 Antenna entirely dark brown; anterior mesonotum red-brown, interdigitating with black posterior mesonotum (Fig. 2g); scutellum black with reddish margin; postnotum black; abdominal terga 1 and 2 reddish, hypopygium (Fig. 4d) with hypandrium greatly expanded and keel-like (n. Qld)..................................................................... B. maxi n.sp. ——Antennal scape and pedicel yellowish, first flagellomere black; pleura and postnotum dark brown with yellowish areas; anterior mesonotum mostly yellow; postpronotum and postalar callus pale yellow; scutellum yellow but infuscated basally; hypopygium not expanded, similar to Fig. 3a........................................................................................................... 8 8 Coxae II and III dark brown; thorax with posterior slope of mesonotum dark brown and with thin brown strip extending anteriorly over dc band (Fig. 2a); TIII mostly yellow; It yellow; 1 hypopygium (Fig. 3a) entirely dark brown (NSW)........................................... B. allynensis n.sp. ——Coxae II and III mostly yellow; mesonotum with three brown bands extending to scutellum and with lateral dark brown areas (Fig. 2f); TIII yellow but with distal fifth brown; It distinctly 1 brown, in contrast to yellow TI and tarsomeres It ; hypopygium 2–4 with dark brown hypandrium and surstyli, but distinctly yellow epandrium (NSW)...................................................................................................... B. cerra n.sp. Bandella allynensis n.sp. 6.0/ 3.5/ 1.5/ 1.2/ 1.3; FI and TI mostly with short vestiture; It and It each with two closely appressed subapical pv 2 3 Figs. 2a, 3a–c setae, which are distinctly longer than single corresponding single av seta.(MSSC); It ventrally flattened with pale Type material. HOLOTYPE (cid:1) and PARATYPES, 2(cid:1), 10(cid:2) all 2–5 vestiture; II: 11.0; 11.5; 6.0/ 3.5/ 1.5/ 1.2/ 1.3; TII with pair New South Wales, Upper Allyn River, 1500 ft (410 m), strong av-pv setae; each tarsomere IIt with apical setae; 9.xi.1960, I.F.B. Common & M.S. Upton (ANIC). 1–3 IIt each slightly flattened with pale ventral pile; III: 15.0; 2–5 Additional material. New South Wales: 3(cid:1), 2(cid:2), New 17.0; 7.0/ 3.0/ 1.3/ 1.8/ 1.6; FIII weakly expanded in distal third; TIII without strong setae; IIIt with short black England NP, Point Lookout, 1400 m, Nothofagus forest, vestiture. 22.i.1967 (UQIC); Wilson River Reserve, 31°12'S 152°28'E, 240 m, wet sclerophyll/ subtropical rainforest: (cid:2), Abdomen: tergum 1 dark brown; tergum 2 with basal 26.xi.1966, & (cid:1), sticky trap on Eucalyptus grandis, 16– third yellow and distally dark brown; terga 3–6 mostly 19.xi.1998; (cid:1), (cid:2) Carrai SF, Daisy Plains, 30°54'19"S yellow but each tergum with dark brown posterior marginal band (in darker specimens, marginal band larger and with 152°17'36"E, 1055 m, 11–16.i.1998, wet sclerophyll forest, dorsoanterior extensions on most terga); cuticle glabrous, sticky trap on eucalyptus trunk (AMS). without pruinosity; tergum 7 with U-shaped median Description (male): length: 9.4–9.8; wing: 8.2×1.4. Head: excavation; tergum 8 unmodified; hypopygium (Fig. 3a); post-cranium black, covered laterally and ventrally with male cercus divided into short basal cercal plate and grey pruinosity; dorsal post-cranium, vertex and frons black digitiform clasping cercus. without pruinosity; postcranium with usual pale ventral Female similar to male except as noted: thorax with similar hairs; dorsal postcranium bare; postorbital setae white colour; leg vestiture somewhat weaker than on male; It ventrally, black dorsally; labrum dark brown but yellow at 2 and It each with single subequal subapical av-pv setal pair. middle; labellum dark brown; antennal scape and pedicel 3 yellowish to brown; first flagellomere black. Remarks. Bandella allynensis occurs in subtropical and Thorax: pleura and postnotum dark brown with yellowish temperate rainforests and wet sclerophyll eucalypt forests areas, and covered with grey pruinosity; anterior mesonotum along the ranges of northeastern New South Wales. mostly yellow with pale yellow postpronotum and postalar Specimens taken in sticky traps (sheets of clear plastic callus; ac band dark brown, and dark brown stripe present coated with sticky substance and attached to tree trunks) from postpronotum to postalar callus; posterior slope of suggest the species occasionally rests on tree trunks. There mesonotum dark brown, with thin brown strip extending is some variation in the extent of the dark brown area on anteriorly over dc band, but fading out near mesonotal suture the mesonotum (Fig. 2a). (Fig. 2a); scutellum yellow but infuscated at base; posterior slope of mesonotum with some short setulae. Bandella cerra n.sp. Legs: CI yellow and trochanter I yellow with dark brown apical rim; coxae and trochanters II and III distinctly dark Fig. 2b brown; remainder of leg I yellow except distal tarsomeres infuscated; FII and FIII basally yellow; but infuscated Type material. HOLOTYPE, (cid:1) (K 173134), PARATYPES, (cid:1) distally; TII and TIII mostly yellow, but TIII infuscated (K 173135), (cid:2) (K 173136), New South Wales: Barrington apically; tarsi II and III brown; leg vestiture brownish; coxae Tops NP, Gloucester Tops, 32°04'S 151°34'E, 1280 m, with only short pale vestiture, no strong setae; all tarsi with Nothofagus moorei forest along creek, 4–30.xii.1988, strong black claws and large yellowish pulvilli; I: 11.0; 11.5; malaise trap, D.J. Bickel (all AMS). Bickel: a new empidid fly genus 319 Figure 3. Bandella allynensis: a, male postabdomen; b, male wing, dorsal; c, male antenna, left lateral. Bandella montana: d, male postabdomen, left lateral. Bandella noorinbee: e, male postabdomen, left lateral; f, female oviscapt, dorsal. Additional material. New South Wales: (cid:1), Barrington yellow with pale yellow postpronotum and postalar callus; Tops, via Salisbury [no elevation], 28–30.xii.1965 (UQIC); ac band dark brown and extending to scutellum, with (cid:1), Mt Banda Banda FR, 31°10'S 152°26'E, 1200 m, cool yellow bands on either side, also extending to scutellum, temperate rainforest, 14.i.1988 (AMS). and with brown areas laterad which extend from mesonotal suture back to scutellum (Fig. 2b); scutellum Description (male): length: 8.5–9.5; wing: 6.9×1.3; similar yellow but infuscated at base. to B. allynensis except as noted. Head: scape black. Thorax: Legs: CI yellow; trochanter I yellow with dark brown pleura and postnotum dark brown with yellowish areas, and apical rim; coxae and trochanters II and III yellowish with covered with grey pruinosity; anterior mesonotum mostly brown areas, and covered with grey pruinosity; FI and TI 320 Records of the Australian Museum (2002) Vol. 54 yellow; It distinctly brown, in contrast to yellow TI and with dense ventral vestiture, and with some subapical av- 1 distal tarsomeres; It yellow; It and It each with two pv setae; III: 18.0; 17.0; 6.3/ 2.1/ 1.8/ 1.5/ 1.8; FIII very 2–5 2 3 closely appressed subapical pv setae, which are distinctly slightly clavate in distal third; tarsomeres IIIt ventrally 1–2 longer than single corresponding single av seta.(MSSC); swollen with dense vestiture. It ventrally flattened with pale vestiture; FII and TII Abdomen: segments 1–6 shining black with some violet 2–5 yellow; It brown, and It yellow; FIII yellow basally, reflections, although tergum 2 yellow in basolaterally; 1–2 3–5 grading to brown in distal third; TIII yellow with but distal segments 7 and 8 yellowish; tergum 6 dorsally with median- quarter brown; IIIt dark brown. posterior U-shaped excavation, and tergum 7 with lateral Abdomen: tergum 1 dark brown; terga 2–6 mostly yellow flaplike projections; hypopygium yellowish (Fig. 3d). but each tergum with dark brown apical ring and with dark brown dorsal band so that abdomen appears to have dorsal Female similar to male except as noted: post-cranium also stripe; hypopygium (not figured, but similar to Fig. 3a) with with grey pruinosity; thorax with similar colour and black dark brown hypandrium and surstyli, but distinctly yellow patch size variation; leg vestiture somewhat weaker than epandrium. on male; abdominal tergum 1 with similar colour pattern. Female similar to male except as noted: thorax with similar Remarks. Bandella montana occurs along the Great colour; leg vestiture somewhat weaker than on male; It Dividing Range from southern Victoria to the New England 2 and It each with single subequal subapical av-pv setal pair; escarpment in northern New South Wales. The extent of 3 abdomen with similar pattern. the black area on the mesonotum appears to vary in size geographically. Specimens from the southern part of the Remarks. Bandella cerra is known from Nothofagus range (Blue Mountains, N.S.W. and Thompson River, Vic.) moorei dominated cool temperate rainforest in the have the black area reduced to a narrow median strip, Barrington Tops and Mt Banda Banda, in northeastern New whereas specimens from the New England escarpment have South Wales. These sites are in the Central Eastern a more extensive black area, as in Fig. 2c. Rainforest Reserves of Australia (CERRA) World Heritage Area, hence the specific epithet. Bandella montana n.sp. Bandella noorinbee n.sp. Figs. 2c, 3d Figs. 2d, 2e, 3e, 3f Type material. HOLOTYPE, (cid:1) (K 173137), PARATYPES, (cid:1) Type material. HOLOTYPE (cid:1), PARATYPES 2(cid:1), 11(cid:2), (K 173138), (cid:2) (K 173139), New South Wales: Barrington Victoria: Noorinbee, 12.xi.1969, A. Neboiss (all MVM). Tops NP, 5.xii.1976, G. Daniels (all AMS). Additional material. New South Wales: 3(cid:1), 6.4 km N of Additional material. NEW SOUTH WALES: NSW: Mt Batemans Bay, 14.x.1952, 22.x.1952, 14.x.1959; (cid:1), Wilson, Blue Mountains, 33°30'S 150°23'E, 950 m, (cid:2), Macquarie Falls, 14.xi.1960, 2(cid:2), Warrell Creek, 11.x.1962 5.xii.1956, (cid:2), 1.xi.1975, (cid:1), 10.xi.1990 (AMS); (cid:1), New (ANIC). (cid:1), Mt Royal SF, nr Pieries Ridge, 600–700 m, England NP, 5.xi.1981 (AMS); (cid:1),Mt Tomah, Blue Mtns, 15.xi.1986; (cid:2), 30 km N of Taree, 23.xi.1985 (AMS); (cid:1), 33°33'S 150°25'E, x.1930 (MVM). VICTORIA: (cid:2), Thomson Royal NP, Couranga Trail, 7.xi.1993 (CNC). River, 6 km E of Mt Gregory, 24.xi.1976 (MVM). Description (male): length: 7.2–7.3; wing: 5.0×1.5. Head: Description (male): length: 11.0; wing: 8.8×2.7. Head: post- post-cranium, vertex and frons shining black with no cranium laterally and ventrally with dusting of grey pruinosity; ventral postcranium with scattered pale setae; pruinosity; dorsal postcranium, vertex and frons shining postorbitals reduced to short hairs, white ventrally, black black with no pruinosity; ventral postcranium with scattered dorsally; face covered with silvery pruinosity; labrum pale setae; postorbitals present as short white setae ventrally, yellowish with dark brown base and apex, labellum black; black dorsally; face covered with silvery pruinosity; labrum antenna black brown; scape and pedicel setose. and labellum entirely yellow; antenna black but pedicel Thorax: pleura and humeral areas of mesonotum red- brownish in some specimens. yellow; mesonotum mostly black posteriorly, narrowing step Thorax: pleura and mesonotum mostly red-yellow, except like anteriorly, to become black stripe over ac band and posterior mesonotum with black area extending almost to pronotum (Fig. 2d); scutellum black; postnotum black but scutellum, but varying in extent from large area (Fig. 2c) to covered with grey pruinosity; setulae pale; scutellum with a small black dot, almost absent; scutellum yellow but pair short median marginal setae, and with some adjacent brownish basally; pleura with some pruinosity, but short setae. mesonotum glabrous; scutellum with pair brownish median Legs: coxae yellow; trochanters and remainder of legs marginal setae, with some adjacent short setae. dark brown to black; coxae with only short pale vestiture, Legs: coxae and remainder of legs yellow; coxae with no strong setae; all tarsi with strong black claws and large only short pale vestiture, no strong setae; femora and tibiae yellowish pulvilli; I: 6.7; 7.0; 3.6/ 1.2/ 1.0/ 0.9/ 0.8; FI and with mostly short black vestiture; all tarsi with strong black TI mostly with short vestiture; TI without anteroapical claws and large yellowish pulvilli; I: 11.5; 11.5; 5.0/ 2.0/ comb; TI, It , and It each with 2 pairs of av-pv setae, and 1 2 1.6/ 1.4/ 1.5; TI and each tarsomere It with 2–3 pairs of It each with single pair of av-pv setae; II: 6.7; 7.0; 3.0/ 1.4/ 1–3 3 subapical av-pv setae, and It with dense ventral vestiture; 1.0/ 0.9/ 0.7; TII with pair strong apical av-pv setae setae; 1–3 II: 12.5; 12.0; 5.0/ 2.0/ 1.2/ 1.1/ 1.5; each tarsomere IIt each tarsomere IIt with apical av-pv setae; IIt with black 1–4 1–3 1 Bickel: a new empidid fly genus 321 ventral pile; remainder of tarsus II with dense pale ventral in October and November. This species shows strong sexual pile; III: 11.0; 10.0; 3.0/ 1.3/ 1.0/ 0.8/ 0.8; FIII gradually dimorphism in mesonotal pattern: males have an extensive expanding apically, and weakly clavate in distal third; TIII black area (Fig. 2d), whereas females have an entirely without strong setae; IIIt with short black vestiture. yellow mesonotum (Fig. 2e). Abdomen entirely shining black, with metallic blue-violet reflections; without pruinosity; tergum 7 with distal U- shaped excavation; tergum and sternum 8 unmodified; hypopygium (Fig. 3e); male cercus divided into short basal cercal plate and rather broad clasping cercus. Female similar to male except as noted: face and clypeus both wider; thorax including scutellum and postnotum entirely yellow, without any black markings (Fig. 2e); vestiture of tarsus I and II not as strongly developed; oviscapt Fig. 3f. Remarks. Bandella noorinbee is known from coastal and lowland sites from the northern coast of New South Wales to East Gippsland, Victoria. All specimens were collected Figure 4. Bandella tasmanica: a, male postabdomen, left lateral. Bandella duvalli: b, male postabdomen, left lateral; c, male postabdomen, dorsal. Bandella maxi: d, male postabdomen. Bandella costalis: e,. male right tibia and tarsus II, dorsal. Legend: aed, aedeagus; cer (cl), clasping cercus; cer (pl), cercal plate; epan, epandrium; hyp, hypandrium; tg, tergum; st, sternum. 322 Records of the Australian Museum (2002) Vol. 54 Bandella maxi n.sp. Bandella duvalli n.sp. Figs. 2g, 4d Figs. 1, 2h, 2i, 4b, 4c Type material. HOLOTYPE (cid:1) (K 173140), Queensland: Mt Type material. HOLOTYPE (cid:1), Tasmania: 14 km SW by S Lewis, Mt Lewis Rd nr forestry hut, 1100 m, 10.xii.1974, of Wilmot, 41°30'S 146°05'E, 31.i.1983, I.D. Naumann & at light, M.S. Moulds (AMS). J.C. Cardale (ANIC). Description (male): length: 10.0; wing: 7.5×2.2. Head: Additional material. Tasmania: (cid:1), Arthur Plains, post-cranium, vertex and frons shining black with no 18.ii.1965; (cid:2), Mt Bowes, NE slope, 11.ii.1965 (MVM); pruinosity; ventral postcranium with scattered pale setae; (cid:1), Mt Wellington, Hobart, 42°55'S 147°14'E, 1.ii.1992, 720 postorbitals reduced to short hairs, white ventrally, black m, on Leptospermum scoparia (UQIC); (cid:2), Cradle Valley, dorsally; face as wide as frons and covered with silvery 26.i.1923; (cid:1), Strahan, 6.ii.1923; (cid:2), Mt Farrel, 9.ii.1923; pruinosity; palp yellow with white setae, curved and slightly (cid:1), Mt. Field NP, 950 m, 22.ii.1963 (ANIC); (cid:1), Mt Barrow, clavate; proboscis yellow with dark brown apex, elongate, 41°22'S 147°25'E, 900 m, 12.ii1988 (AMS). length about one and a half head height, and projecting ventrally; antenna dark brown. Description (male): length: 10.0; wing: 7.5×2.2 (habitus, Thorax: pleura and anterior mesonotum mostly red- Fig. 1). Head: post-cranium black, covered laterally and brown; anterior mesonotum red, interdigitating with black ventrally with grey pruinosity; dorsal post-cranium, vertex posterior mesonotum (Fig. 2g); scutellum black with reddish and frons black without pruinosity; postcranium with usual margin; postnotum black, posterior slope of mesonotum pale ventral hairs and with black dorsal hairs; postorbital covered with field of short setulae. setae white ventrally, black dorsally; lateral frons with Legs: coxae mostly reddish yellow; but CIII laterally setulae more distinct than usual; palp yellow with white infuscated; coxae with only short pale vestiture, no strong setae, curved and slightly clavate; labrum dark brown setae; all tarsi with strong black claws and large yellowish basally, yellow distally; labellum dark brown; antenna black; pulvilli; I: 9.0; 9.8; 5.0/ 2.1/ 1.5/ 1.8/ 1.4; leg I mostly red- scape and pedicel with short black setulae. yellow; FI and TI mostly with short vestiture; TI without Thorax: pleura mostly black but red-brown near sutures, anteroapical comb; TI and It each with 2–3 pairs of apical and covered with grey pruinosity; anterior mesonotum red- 1 av and pv setae, It and It each with single av-pv setal pair; brown, interdigitating with black posterior mesonotum, 2 3 all of tarsus I with pale ventral pile; II: 10.0; 10.5; 4.5/ 1.8/ black lateral patches and black ac band, but in some 1.3/ 1.4/ 1.0; FII mostly reddish yellow but infuscated in specimens this pattern is obscured (Fig. 2h,i); scutellum distal half; TII and IIt red-yellow; distal tarsomeres II dark red-brown with black base; postnotum black with grey 1 brown; TII with pair strong av setae; each tarsomere IIt pruinosity; posterior slope of mesonotum covered with field 1–3 with apical av-pv setae; IIt and IIt with dense pale ventral of short setulae. 3 4 pile; III: 13.5; 13.0; 5.0/ 2.0/ 1.3/ 1.5/ 1.3; FIII yellowish in Legs: coxae dark brown to black although CI and CII basal half but distally dark brown; TIII yellow in basal third, reddish brown distally; coxae with only short pale vestiture, and with distal two-thirds of TIII, and all IIIt dark brown; no strong setae; all tarsi with strong black claws and large FIII gradually expanding apically, and weakly clavate in yellowish pulvilli; legs I and II mostly red-yellow; It1–3, distal third; TIII without strong setae; IIIt with short black each with pairs of av setae; each tarsomere IIt1–3 with some vestiture. subapical av setae; FIII yellowish in basal two thirds, but Abdomen: terga 1 and 2 reddish, remainder of abdomen dark brown and slightly clavate in distal third; TIII yellow black; cuticle glabrous, without pruinosity; segment 7 with at base, dark brown from 1(cid:1)3–5(cid:1)6, and yellow in distal sixth; well-developed tergum and sternum, tergum 7 not distal sixth of TIII and IIIt1 with pale yellow vestiture; excavated; nor differentiated from segments anteriad; IIIt2–5 with black vestiture. tergum 8 reduced to narrow band; sternum 8 unmodified; Abdomen: tergum 1 black; preabdomen translucent red- hypopygium (Fig. 4d). brown, with some specimens showing black areas laterally and dorsally on terga 4 and 5; cuticle glabrous, without Female unknown. pruinosity; tergum 7 only slightly excavated; tergum 8 with lateral flaplike projections; sternum 8 unmodified; Remarks. Bandella maxi is known only from submontane hypopygium mostly black (Fig. 4b,c). rainforest above 1000 m on Mt. Lewis, in the Queensland wet tropics. It has a greatly expanded and keel-like Female similar to male except as noted: frons wider, thorax hypopygium. with black markings smaller in extent; leg and vestiture However, male abdominal segments 7 and 8 are relatively colour similar; abdomen mostly orange in colour. unmodified, and therefore plesiomorphic with respect to the other Bandella species. This species is named for the Remarks. Bandella duvalli is known from various locales collector, Max Moulds. in western Tasmania, mostly in upland areas. There is some intraspecific variation in the intensity of mesonotal infuscation among the specimens, as shown in Fig. 4b and 4c. This species named in honor of Steven G. Duvall of California, who helped sponsor this research.