© Copyright Australian Museum, 2006 Records of the Australian Museum (2006) Vol. 58: 125–128. ISSN 0067-1975 A New Genus, Warlucephala, for the Reception of Deltocephalus arunda Jacobi, 1909, and Two New Species (Hemiptera: Cicadellidae: Deltocephalinae) M.J. FLETCHER Orange Agricultural Institute, Forest Road, Orange NSW 2800, Australia [email protected] ABSTRACT. The new leafhopper genus Warlucephala is described based on Deltocephalus arunda Jacobi, 1909, from Western Australia and placed in the tribe Deltocephalini. Warlucephala reversa n.sp. from New South Wales and Warlucephala abbreviata n.sp. from southern Western Australia are also described. The affinities of the new genus are discussed. FLETCHER, M.J., 2006. A new genus, Warlucephala, for the reception of Deltocephalus arunda Jacobi, 1909, and two new species (Hemiptera: Cicadellidae: Deltocephalinae). Records of the Australian Museum 58(2): 125–128. In his catalogue of the Australian leafhopper fauna, Evans Evans (Tribe Paralimnini) and D. decoloratus Evans and (1966) listed 15 species of subfamily Deltocephalinae in D. centralis Evans to Arawa. the nominal genus Deltocephalus Burmeister but stated that In this paper, one of the remaining four species is transferred a critical study of the world fauna was needed to determine to Warlucephalus n.gen. and two additional new species are if any of these were truly congeneric with the type species, added to the genus. This leaves D. chlorippe (Kirkaldy), D. Deltocephalus pulicaris Fallén. By 1994, when the next lucindae Kirkaldy and D. viridellus Evans still to be placed catalogue of the Australian fauna was published (Day & outside Deltocephalus should this prove necessary. Fletcher, 1994), four of these had been transferred The following abbreviations are used in this paper: AM: elsewhere: D. taedius Kirkaldy to Arawa Knight (Tribe Australian Museum, Sydney; ASCU: Agricultural Scientific Athysanini) as a nomen dubium, by Fletcher & Condello Collections Unit, NSW Department of Primary Industries, (1993), D. montanus Evans (preoccupied by Deltocephalus Orange; NSW: New South Wales; WA: Western Australia. montanus Distant, replaced with D. novellus by Metcalf, 1968) to Arawa by Knight (1975), D. dedarensis Evans to Genus Warlucephala n.gen. Euleimonios Kirkaldy (Tribe Paralimnini) by Fletcher & Type species. Deltocephalus arunda Jacobi 1909: 343. Condello (1994) and D. dorsalis Motschulsky to Recilia Edwards (Tribe Deltocephalini) by Nielson (1968). In Etymology. The generic name, which is feminine, combines addition, Day & Fletcher (1994) transferred Deltocephalus flat plain (warlu: Nyungar language of northwestern Australia) pullatus Evans to Limotettix J. Sahlberg (tribe Athysanini) (Thieburger & McGregor, 1994) with head (cephalus, Latin). as a senior synonym of Limotettix condylus Knight. Diagnosis. Head. Head flat dorsally, convex on face with Of the remaining 10 species listed in Deltocephalus by frontoclypeus large, anteclypeus parallel-sided or tapered Day & Fletcher (1994), six were moved into other genera to level with lora, then narrowed to apex. Vertex arrow- by Fletcher (2004), D. lotis Kirkaldy, D. aristarche shaped with longitudinal median furrow around distinct (Kirkaldy) and D. perparvus Kirkaldy to Horouta Knight coronal suture which extends from base to around three (Tribe Deltocephalini), D. polemon Kirkaldy to Micrelloides www.amonline.net.au/pdf/publications/1449_complete.pdf 126 Records of the Australian Museum (2006) Vol. 58 Figs. 1–7. Habitus of (1) Warlucephala arunda, lectotype female; (2) W. reversa, paratype male; (3) W. abbreviata, holotype male; and (4) W. abbreviata, macropterous female paratype; scale lines = 1 mm. Facial views of heads of (5) Warlucephala arunda; (6) W. reversa; and (7) W. abbreviata; scale lines = 0.5 mm. quarters length of vertex. Vertex meeting face at acute angle, sometimes marginally carinate over median section. Tegmina. Tegmina fully brachypterous, semi-brachypterous or macropterous. Male genitalia. Pygofer extended posteriorly as rounded lobe bearing macrosetae. Subgenital plates narrow triangular to elongate, bearing row of macrosetae on outer margins. Parameres modified with apical process rounded, not pointed. Aedeagus simple tubular, without processes other than apical extension of various form beyond gonopore. Distribution. Southern Western Australia and New South Wales. Warlucephala arunda (Jacobi), n.comb. Figs. 1, 5, 8–12 Deltocephalus arunda Jacobi 1909: 343. Types. Lectotype (cid:1) (here designated), Moora, Western Australia 8.viii.1905 (Berlin); paralectotype, (cid:1), same data as lectotype (?Hamburg). Figs. 8–12. Male genitalia of Warlucephala arunda: (8) subgenital Material examined. Lectotype and the following: Western plate; (9) paramere; (10) connective; (11) aedeagus, posteroventral Australia: 3 (cid:2)(cid:2), Perth, ii.1961, light trap (AM). view; (12) aedeagus, lateral view. Fletcher: Warlucephala new genus 127 Description. Length: Male 2.8–2.9 mm. Coloration: Pale yellow brown on vertex, thorax and abdomen. Face (Fig. 5) dark brown with transverse pale striations on frontoclypeus, separated from vertex by two transverse dark brown lines which are slightly convex around dorsal edge of fronto- clypeus. Tegmina translucent brown, paler along costal margin. Morphology: Anteclypeus broad at base, tapering unevenly towards apex, noticeably narrowing beyond lora which are widely separated from face margin. Vertex arrow- shaped, flat to concave on disc with clearly distinct median carina reaching three quarters from base to apex. Pronotum short. Tegmen reaching to just short of base of tenth abdominal tergite, appendix absent. Male genitalia: Pygofer extended posteriorly and apically rounded, bearing group of macrosetae on posterior lobe. Subgenital plates (Fig. 8) narrowly triangular, posteriorly extended to level with Figs. 13–17. Male genitalia of Warlucephala reversa: (13) pygofer, apically bluntly pointed, each bearing 6–8 subgenital plate; (14) paramere; (15) connective; (16) aedeagus, macrosetae evenly spaced along outer margin which is posteroventral view; (17) aedeagus, lateral view. slightly concave. Paramere (Fig. 9) short, apical process reduced, bluntly rounded apically, preapical shoulder rounded. Connective (Fig. 10) fused with base of aedeagus, with lateral with arms longer than main body. Aedeagus (Figs. 16, 17) arms longer than main body. Aedeagus (Figs. 11–12) tubular, tubular, strongly curved ventrally with apical linear lightly evenly curved dorsally with gonopore apical but with extension beyond gonopore on ventral side of gonopore. shaft extended to form short, straight, linear process directed Distribution. Kosciuszko region, New South Wales. posteriorly from ventral margin of gonopore. Etymology. The specific name refers to the curvature of Distribution. Western Australia. the aedeagal shaft being in the reverse direction from that Remarks. The presence of a paralectotype female in in other known species of the genus. Hamburg has not been confirmed. A lectotype is designated to provide a reference for the species. The three males listed Warlucephala abbreviata n.sp. above were found in the J.W. Evans Collection and appear Figs. 3, 4, 7, 18–22 to have been collected by Evans, because the associated data labels appear to be in his handwriting. Type material. HOLOTYPE: (cid:2), Albany, Western Australia, x.1966, J.W. & F. Evans, AM K204211. PARATYPES: Warlucephala reversa n.sp. Western Australia: 12 specimens, same data as holotype: 1(cid:1) mounted with holotype; 1(cid:1) and 1, sex unknown (abdomen Figs. 2, 6, 13–17 missing), mounted together; 1(cid:2) (head missing) and 1(cid:1), Type material. HOLOTYPE (cid:2), Mt Kosciusko [sic], Wilson’s smeocuonntde dsp teocgimethener w; h1i(cid:1)ch (ims nooutn itnecdlu wdeitdh i nta tryspael sreermiens)a;n 4t(cid:1)s o(cid:1)f Valley, NSW, i.1965, J.W. & F. Evans, AM K204207. PARATYPES: New South Wales: 2 (cid:2)(cid:2), 1(cid:1), 1 unknown mounted individually (all in AM K204212–K204218, seven (lacking abdomen), same data as holotype (1(cid:2), 1 unknown registration numbers for 10 specimens, some double- mounted); 1(cid:2), 1(cid:1) mounted individually (ASCU). ASCU, others AM K204208, AM K204209). Description. Length. Male (n=3) 3.5–3.7 mm, female (n=1) 4.3 mm. Coloration: Pale brown dorsally, darker ventrally. Frontoclypeus (Fig. 6) dark brown with speckled lateral pale striations. Apex of head with fine dark brown marginal line, slightly convex dorsally around margin of frontoclypeus. Tegmina translucent testaceous with pale band along costal margin. Morphology: Anteclypeus parallel-sided to apex of lora, then narrowed to apex. Lora widely separated from face margin. Vertex arrow-shaped, slightly longer medially than wide between eyes. Vertex shagreen, flat, medially slightly depressed with dark median suture reaching about 3 quarters length from base. Pronotum short, faintly transversely wrinkled. Male genitalia. Pygofer long, laterally extended to form rounded lobe bearing 8–9 long macrosetae. Subgenital plates (Fig. 13) elongate triangular, apically roundly pointed, bearing evenly spaced macrosetae on outer, slightly concave, margins. Paramere (Fig. 14) Figs. 18–22. Male genitalia of Warlucephala abbreviata: (18) short, with apical process rounded and curled over apically. subgenital plate; (19) paramere; (20) connective; (21) aedeagus, Preapical shoulder weakly rounded. Connective (Fig. 15) posteroventral view; (22) aedeagus, lateral view. 128 Records of the Australian Museum (2006) Vol. 58 Description. Size. Brachypterous male (Fig. 3) (n=2) 3.2– species of Horouta Knight and Stenogiffardia parvula 3.4, brachypterous female (n=7) 4.0–4.3 mm, macropterous (Kirkaldy) occurring commonly in brachypterous, semi- female (Fig. 4) (n=2) 4.2 mm. Coloration: Pale coffee brachypterous or macropterous forms. Knight (1975) brown. Face (Fig. 7) slightly darker toward margin with discussed the occurrence of brachyptery in Horouta, vertex, with faint pale lateral striping and short median pale indicating that this form was normally restricted to the band. Margin between face and vertex marked with cream females and was typical of populations from higher altitudes. band bordered on both sides with dark brown, this band Fletcher (2004) demonstrated that brachyptery was common convex laterally to reveal narrowly part of frontoclypeus in both males and females. Males of W. abbreviata are only when viewed dorsally. Vertex pale coffee with pale cream known in the brachypterous form and females in both forms median stripe which continues less distinctly onto pronotum while both males and females of W. reversa are semi- which also bears vague stripes laterally parallel to median. brachypterous. Although W. reversa is described above from Tegmina pale translucent testaceous in brachypters, darker the higher altitudes of the Kosciuszko region of NSW, W. in cells of macropter. Morphology: Anteclypeus tapering abbreviata is only known at the low altitude of Albany, WA. base to apex, more strongly narrowed beyond lora which Correlation between occurrence of brachyptery and higher are widely separated from face margin. Vertex triangular, altitudes therefore seems unlikely. slightly convex, longer than wide between eyes, shagreen. pronotum short, obscurely transversely wrinkled. Tegmina short quadrate in brachypters, reaching to apex of abdomen in macropter which has appendix extending around apex ACKNOWLEDGMENTS. Continuing work on the Australian of tegmen, apical cells long so that preapical cells are Deltocephalinae was partially funded by a grant from the situated at around midlength of tegmen. First preapical cell Australian Biological Resources Study, a component of the short, rounded, third closed basally. Male genitalia: Pygofer Australian Government Department of Environment and Heritage. of medium length, apically extended with rounded lobe Availability of the J.W. Evans leafhopper collection was made possible by the late Mrs Faith Evans and the Director of AM. bearing numerous macrosetae. Subgenital plates (Fig. 18) Support for taxonomic research by NSW DPI is gratefully triangular, not nearly reaching as far posteriorly as pygofer acknowledged. with evenly spaced short macrosetae on concave outer margins. Parameres (Fig. 19) dark, short, broad, flattened, References apically truncate to excavate. Connective (Fig. 20) with arms longer than main body. Aedeagus (Figs. 21, 22) with shaft Day, M.F., & M.J. Fletcher, 1994. An annotated catalogue of the evenly curved dorsally, tapered base to apex but slightly Australian Cicadelloidea (Hemiptera: Auchenorrhyncha). expanded apically with flange around gonopore. Invertebrate Taxonomy 8: 1117–1288. Evans, J.W., 1966. The leafhoppers and froghoppers of Australia Distribution. South Western Australia. and New Zealand (Homoptera: Cicadelloidea and Cercopoidea). Australian Museum Memoir 12: 1–347. Etymology. The specific name refers to the strongly Fletcher, M.J., 2004. A revision of the genus Horouta Knight brachypterous tegmina found in most specimens. with description of two new species and notes on other species of Deltocephalinae (Hemiptera: Cicadellidae). General and Remarks. This species is more highly decorated than the applied Entomology 33: 45–54. other described species and is immediately recognisable by Fletcher, M.J., & A.A. Condello, 1993. Lectotype designations and the markings on the vertex. The presence in the type series new synonymies for G.W. Kirkaldy’s Australian Deltocephalinae of a macropterous female indicates that polymorphism (Homoptera: Cicadellidae) held in the B.P. Bishop Museum, might also be a feature of other species of the genus. Honolulu. General and applied Entomology 25: 35–59. Fletcher, M.J., & A.A. Condello, 1994. A revision of the Australian leafhopper genus Euleimonios Kirkaldy (Hemiptera: Cicadellidae: Deltocephalinae). Invertebrate Taxonomy 8: Discussion 1017–1035. Jacobi, A., 1909. Homoptera. Die Fauna Südwest-Australiens, The placement of Warlucephala in Deltocephalini is based Ergebnisse der Hamburger südwestaustralischen Forschungereise on the features used by Knight (1975) to define that tribe. 1905. Herausgegeben von Prof. W. Michaelsen und Dr R. These are the parallel arms of the aedeagal connective which Hartmeyer 2: 337–345. is fused to the base of the aedeagus and the width of the Knight, W.J., 1975. Deltocephalinae of New Zealand (Homoptera: genal strip below the lora. The new genus shows affinities Cicadellidae). New Zealand Journal of Zoology 2(2): 169–208. with Recilia Edwards based on head structure, tegmen Metcalf, Z.P., 1968. General Catalogue of the Homoptera Fasc. venation (as found in macropterous forms) and the simple, VI. Cicadelloidea. Pt 10. Euscelidae. (U.S. Dept of curved, tubular aedeagus with linear extension beyond the Agriculture). 2695 pp. gonopore. It differs from Recilia in other features of the Nielson, M.W., 1968. The leafhopper vectors of phytopathogenic male genitalia, particularly the modified structure of the viruses (Homoptera, Cicadellidae). Taxonomy, Biology, and Virus Transmission. United States Department of Agriculture parameres, the occurrence of brachyptery, the flat vertex Technical Bulletin 1382: 1–386. and the angulate margin between the vertex and the face. Thieburger, N., & W. McGregor, eds., 1994. Macquarie Aboriginal Warlucephala has a Bassian distribution between the Words. Sydney, Macquarie University: The Macquarie Library. southwestern and southeastern portions of the Australian mainland. This contrasts with Recilia which is an Oriental genus distributed, within Australia, across the tropics with Manuscript submitted 20 September 2004, revised 22 April 2005 and extensions into coastal temperate zones. accepted 22 April 2005. Brachyptery is common in Australian Deltocephalini with Associate Editor: M.S. Moulds.