Mitt. Münch.Ent.Ges. apropleural carina and its Shas ashortflagellum as doesT. latitarsis,butshareswith T. chalybaea thetwo structuresmentionednextintheabovelist. Forthelasttwocharactersmentioned, lengthoftheparaglossa and length of the 5 first flagellomere, T. nordestina presents an intermediate condition, bridging the differences observed in T. chalybaea and T. latitarsis. Tapinotaspis nordestina presents some features which broaden the Variation previously known for Tapinotaspis. This is the case of the very short jugal lobe of the hind wing, as short as that in species of Tapinotaspoides, and the shortpubescenceofthedorsum ofthe thorax. Thereis muchVariation inthetype ofvestiture amongspeciesofTapinotaspis, asitalsooccursamongspeciesofthegenusChalepogenus (RoiG- Alsina1999).WhileT. chalybaeaandT. latitarsishavethescutumcoveredwithlong,erecthairs,T. nordestina has an extremely short, squamiform pubescence ofvelvety appearance, and T. ogloblini has a mixture of squamiform, decumbent, and long, erect hairs. Material and Methods Material studied, including types, was obtained from several collections. I am indebted to the following: AmericanMuseumofNaturalHistory, NewYork,J. G. Rozen,Jr. (AMNH); FundaciöneInstitutoMiguel Lillo, Tucumän, M. V. CoLOMO(FIML); InstitutfürBotanikund BotanischerGartenderUniversitätWien, Vienna, S. VOGEL (Vogel); Museo Argentino de CienciasNaturales "Bernardino Rivadavia", Buenos Aires (MACN); Museo de La Plata, La Plata, Schnack and A. Abrahamovich (MLP); Snow Entomological J. Museum, University ofKansas, Lawrence, C. D. Michener and R. Brooks (SEM); Zoologisches Museum, Humboldt-Universität, Berlin, F. Koch (ZMB); ZoologischeStaatssammlung München, Munich, K. ScHö- NITZER and ScHUBERTH (ZSM). The acronyms are used below to indicate depositories of specimens. J. For the description of the antenna, the term condylar surface is used. Since the antenna rotates when itisextendedforwards,itisinappropriatetospeakaboutdorsalandventraloranteriorandposteriorsides. Thecondylarsurface correspondsto thatwhere themonocondylic articulationbetweenscapeandpedicel islocated. Inthe descriptions, the metasomal terga (T) and sterna (S) are identified withArabicnumerals. Key to species of Tapinotaspis Holmberg Females 1 Head and thorax with pubescence mostly black. Metapostnotum covered with hairs 2 - Head andthoraxwith allpubescencewhitish. Metapostnotumglabrousand shiny (lengthofforewing 5.0-5.6 mm) 3 2 MetasomaltergawithlateralpatchesofwhitehairsonTl-2andT4.Wingshyalinewithapexinfuscated beyond closed cells. Largerspecies, lengthofforewing7.5-8.5mm. Firstflagellomere L8 times aslong as its apical width. Fore coxa and trochanter with long hairs T. chalybaea - Metasomaltergawithpubescenceblack,withoutpatchesofwhitehairs.Wingsdark,evenlyinfuscated. Smallerspecies, length offorewing6.4-6.7mm. First flagellomere 1.4times as long as its apical width. Fore coxa and trochanter with spiniform setae (Fig. 1) T. nordestina 3 Pubescenceofscutumwithtwoclearlydifferentiatedstrata:oneofshort,squamiformhairs(Fig.3),and the other of long, finely branched hairs. Length of antennal scape shorter than length of sum of flagellomeres 3-6 (proportion 1 : 1.15-1.20). Second flagellomere at least in part orange T. ogloblini - Scutum with medium to long-sized finely branched hairs, without short squamiform hairs. Length of antennal scape subequal to length of sum of flagellomeres 3-6 (proportion 1:1.0-1.08). Second flagellomere black T. latitarsis Males 1 Pubescence of hind tibia and tarsus black. At least last flagellomere white to ivory on one side. S6 without preapical projections 2 - Pubescenceofhind tibiaand tarsus whitish. Lastflagellomerebrownishtoblack. S6withconspicuous preapical lateral projection (Figs. 7, 11) 3 46 2 Clypeus black. Wings dark, evenly infuscated. Flagellum not elongate, second flagellomere shorter than its apical width (proportion 0.75:1). Last tlagellomere with a white spot T. nordestina - Clypeus yellow. Wings infuscated only beyond closed cells. Flagellum elongate, second flagellomere twice as long as its apical width (proportion 2:1). All flagellomeres with an ivory stripe T. chalyhaea 3 Clypeus black. Second flagellomere as long as its apical width T. latitarsis - Clypeus yellow. Second flagellomere 1.4 times as long as its apical width T. ogloblini Tapinotaspis chalyhaea (Friese) ExomalopsischalyhaeaFriese, 1899:267.Lectotype 9,Brasil,Parä, 1890,Schulze (ZMB,designatedbyRoig-Alsina, 1997). Tapinotaspis chacabucensis Holmberg, 1903: 415. Lectotype 3, Argentina, Buenos Aires, Chacabuco (MACN, designated by Roig-Alsina, 1997). Synonymized by Moure, 1948: 335. Exomalopsis longicornis Friese, 1906: 170. Holotype S, Argentina, Cördoba, Stempelmann (ZMB, examined). Synonymized with T. chacabucensis by Brethes, 1910: 290. Tapinotaspischalyhaea:Moure,1948:335.Michener&MouRE,1957:AllAl^,Figs.37-39;Neff&Simpson,1981: 112- 113,Figs.40-41;Simpson &Neff, 1981: 316, Fig. 8;Cocucci, 1991:23-28, Figs.4A-C, 5. RoicAlsina, 1997: 17, Figs. 19-20. Michener, 2000: 672. Cocucci et al., 2000: 64, 69-70, Fig. 12A-F. Moure (1948) gave a detailed synonymy ofthe early citations oithis species, which is not repeated here. The only missing citation which I am aware of is that ofBertoni & Schrottky (1910), who reported a 6 from the province of Cördoba, Argentina, and included the genus among the Eucerin], due to the long antennae ofthe 6. Later citations are given above. Michener& Moure (1957) suggested thatFriese's type specimens from Brazil maybe mislabeled; I have notseen any specimen of T. chalyhaea from this country besides the type series. This is the largest, most frequently collected andbroadly distributed speciesofTapinotaspis. The 9 has a black, shiny metasoma; I have not noticed the blue reflections mentioned by Friese in the original description, which gave the name to the species. The oil-collecting appartus of the middle tarsus differs from that in the other three species: the brushes of dense, oil-collecting hairs are present on most of the basitarsus andonthetarsomeres2-4, butareabsentonthedistotarsus. Intheotherspeciesthebrusheson thebasitarsus are restricted to its apex, and thebrushes on the distotarsus are as well developed as those on the tarsomeres 2-4. The extent ofthe white pile varies among specimens. 9 usually have the wholehead and thorax with blackhairs,exceptasmallwhitepatchonthetegula,butsomespecimens(likethelectotypeofT. chalyhaea) may have white hairs on the clypeus, around the antennal sockets and on the posterior angles of the scutum. (5alwayshavewhitehairsontheface,butonthethoraxwhitehairsmaycoverallthedorsum(from pronotum to metanotum) or be restricted to the pronotum and the anterolateral angles of the scutum. Specimens with extended and reduced white pile occur at the same localities. Distribution: Brazil (Parä) according to Friese (1899), Uruguay, department of Colonia, and Argentina, provinces ofTucumän, La Rioja, Cördoba, Santa Fe, Entre Rios, Buenos Aires, La Pampa and Rio Negro. Materialstudied: Brazil (typesofT. chalyhaea,ZMB).Uruguay. 19,Carmelo,8-XII-1924, E. Blanchard (MACN). Argentina. Tucumän:499 and 16, 11 km N Cadillal, 6-XL 11-Xl 18-XI and 8-XII-1983, R. B. Roberts(SEM);699, 11 km N El CadillaL 8-XI-1991, Rozen, Pena & Ugarte (AMNH, 19 "on Niercmhcrgia"); 366, Tapia, 11-1-1948, Monrös & Willink (IFML); 19, Tapia, 4-1-1976, L. Stange (IFML); 19, Los Ralos, Dpto. Cruz Alta, 12-X-1969, P. FiDALGO(IFML). LaRioja: 19, La Rioja, E.P. Reed(CAS).Cördoba: 16, Cördoba(holotypeofT. longicornis,ZMB); X1-9,19G8r2a,njAa.,C9o-cIIu-c1c92i1,(IJ.FMHLu)b;ri1c6,hA(rZgSüMe)l;loI,d,DeCapCiatrall,o1&3-XVIi-a1n95a5,(MA.ACGNi)o;rg2e9t9t,a A(lImFaMfLu)e;r1t9e,,C2h0a-XtIe-a1u98C9a,rrMe.ra,FRr2r3z- (MACN); 16, Canals, 12-XI-1941 (MLP); 19, Dean Funes, 3-XII-1942. Santa Fe: 299, Piquete, ll-XII-1921 and 8-1- 1930,Bridarolli(MACN);266,Alvear,12-XI-1916,J.Hubrich(ZSM);16,Salad.(Saladillo,nr.Rosario),2-X1-1921, J.Hubrich (ZSM); 19, Alberdi, 24-XlJ. Hubrich (ZSM). Entre Rios: 19, Liebig, X-1995, Zelich (MACN). Buenos Aires: 266, Chacabuco (typesof T. chacabucensis Holmberg, MACN). La Pampa: 299 and 666, E. Castex, 12-XI- 1(9M4A5,CNJ.);Da1g6u,eGrurtera(cMäLn,P)1;5-]X6I,I-1S9a5n2t,aOR.oCsaa,saRlio(MQAuCinNt)o.,RIiXo-1N9e1g0ro(:M1LP9)a;nd56266,6,GeCnheorealleCPihcooe,l,1-X1n9-5149,89W,.MB.enFrsiotnz (MACN); 299 and 366, Rio Colorado, 1-1977, M. Fritz (MACN). 47 Tapinotaspis nordestina sp. n. (Figs. 1-2, 4-6) Tapinotaspis spec. nov. 1: Machado et al. 2002: 354-357, Figs. 3B-D, 4C-D. Diagnosis: This species is easily distinguished fromother Tapinotaspis by the shortjugal lobe ofthe hind wing,whichisonlyonefourthofthelengthofthevannallobe,bytheshort,velvetyvestitureofthedorsum ofthethoraxandpropodeum,bythespiniformsetaeontheforecoxaandtrochanterofthe ?,bytheentirely blackvestiture ofthe ?, andby the flagellum ofthe 6, which is notelongate and has a white apical spot. mm mm Holotype 9: Length 7.0 (paratypes, 7.0-7.7 mm); length offorewing 6.4 (paratypes, 6.5-6.7mm). Coloration: Integumentofbodyblack,exceptdarkreddishbaseofmandible, reddish-browncondylar surface of flagellum and yellow apical spot on opposite side of last flagellomere. Wings dark, evenly infuscated; veins and pterostigma dark-brown. Vestiture: Dark-brown toblack all over thebody. Head, sides and venter ofthorax and propodeum, legs, and metasomal sterna with long, erect hairs. Scutum, scutellum, metanotum, metapostnotum, posteriorfaceofpropodeum, andanteriorconcavefaceofTl withvelvetyappearance, duetoshort, dense, squamiformhairs(Fig.2a-b).Erecthairsonfaceaslongas1.0-2.6timesflagellardiameter,thoseonscutum and scutellum 0.4-0.6 times flagellar diameter, and those onmesopleuron 1.4-2.2 times flagellar diameter. MetasomaltergaTl-3withbarepolishedapicalarea,widestonT2; laterallytobareareawithdenseapical band ofappressed, plumosehairs, briefonTl, intermediate onT2 and more extended onT3; apicalband ofhairs complete on T4; prepygidial fimbria on T5 oflong hairs; base ofT2-4 with simple hairs. Sculpture: Integument smooth and shiny between punctures. Face with small, dense punctures, 1-2 diameters appart. Punctures on scutum, and all the area corresponding to velvety vestiture, extremely smallanddense,regularlydistributed, separatedby0.5-1 timestheirdiameter.Mesopleuronwithscattered small punctures. Morphology: Proportion of lower to upper interocular distance 0.85:1. Proportion of ocellocular to postocellardistance0.85:1. Distancebetweenlateralocellusandposteriormarginofhead0.8timesocellar diameter.Proportionofantennoculartointerantennaldistance0.75:1.Proportionofscape,pedicelandfirst six flagellomeres 2.54:0.64:1:0.33:0.5:0.55:0.6:0.64. Clypeus 1.9 times broader than long. Paraglossa beyond apexofSuspensoriumtwiceaslongasSuspensorium. Propleuronwithoutlateralcarina. Profileof scutellumweaklyconvex,metanotumratherflat,slantingtorear,metapostnotumandpropodeumslanting to rear. Forecoxa and trochanterwith spiniform setae. Middle tarsus elongate, proportion ofbasitarsus to followingtarsomeres, 1:0.3:0.3:0.3:0.3;brushesofdense, oil-collectinghairspresentonapexofbasitarsus, tarsomeres 2-4 and on distotarsus. Hind basitarsus with apical projection pointed, covered with hairs on both sides. Jugal lobe ofhind wing 0.24 times as long as vannal lobe measured from wingbase. Pygidial plate funnel-shaped, with apical fourth parallel-sided and apex rounded. 6: Length 6.7-7.0 mm; length of forewing 6.6-6.8 mm. Coloration: Integument of body black, except white spot on last flagellomere, reddish apex of mandible, and reddish pygidial plate. Wings evenly infuscated as in the 9. Vestiture: Pubescence onhead, thorax, propodeum, most of legs, and apical bands onTl-5 and S2-5 pale yellowishbrown, on mid and hind tibia andbasitarsusblackish (except pale hairs close to basitibial plate), on metasoma blackish, except on above mentioned apical bands, but hairs on T6 variable, pale in somespecimensandblackishinothers.Headhirsute,withshortplumosehairsandlongsimplehairs,latter ones up to 2.5 times as long as flagellar diameter. Scape also with long simple hairs, 1-2 times as long as flagellar diameter. Scutum with two strata of hairs, one of short, dense hairs (similar to that of 9), and another of scattered simple hairs, as long as 1-1.5 times flagellar diameter. Scutellum, metanotum and metapostnotum with short, dense hairs; remainder of thorax with long hairs, those on mesopleuron 2.5 timesaslongasflagellardiameter. Metasomaltergawithdenseapicalbandsofappressedhairs, restricted tolateral fourthonTl, tolateralthirdonT2-3, completebutnarrowonT4, andcompleteandbroadonT5; T6 and T7 laterally with longhairs; upper surface ofpygidial plate covered with hairs. Apical fringes on S2-5 dense, with hairs straight, surpassing posterior margin of sterna. Sculpture: Similar to that of 9. Morphology: Proportion of lower to upper interocular distance, 0.75:1. Proportion of ocellocular to postocellardistance,0.85:1.Distancebetweenlateralocellusandposteriormarginofhead0.7timesocellar diameter. Proportion of antennocular to interantennal distance, 0.55:1. Proportion of scape, pedicel and 48 Figs. 1-3. Tapinotaspis nordestina sp. n., 9: 1, forecoxa and trochanter, anterior view; 2a-b, hairs of scutum. Tapinotaspis ogloblini sp. n., 9: 3c-f, hairs ofscutum. Scale line = 0.05 mm. first six flagellomeres, 3.1:0.85:1:0.75:1:1.05:1.05:1.05. Pygidial plate with lateral margins converging apically; apex narrowly rounded. Diso ofsixth sternum without sclerotized projections; lateral margin of sternum continuous, without projection. S7, S8, and genital capsule as in Figs. 4-6. Etymology: The name refers to the northeastern area ofBrazil, where the species was found. Comments: The hairs of the dense lateral and dorsal brushes of the elongate middle tarsus are finely branchedinthisspecies,asmentionedbyMachadoetal. (2002).Intheotherthreespeciesthesehairshave, along all their length, minute, alternate, scalelike branches (Neff & Simpson 1981, Fig. 41; Cocucci et al. 2000, Fig. 12A-B,D). Distribution: Brazil, State of Pernambuco. Material studied: Holotype 9, Brazil, Pernambuco, Fazenda Bela Vista, bei Catimbau/Buique, 780m, 21-23-X- 1996,S.Vogel (anAngelottiacfr. cornnta)(MACN).Two 9 paratypes, samedataasholotype (Vogel, MACN); IcJ paratype, same data asholotype, buton 22-11-2002 (an Angelonia cornigera) (MACN); 266 paratypes, same data asholotype, but on 24-11-2002 (sleeping aggregation on Lamiaceae) (MACN). Tapinotaspis latitarsis (Friese) (Figs. 7-10) Exomalopsis latitarsis Friese, 1899: 266-267. Lectotype 9, Brasil, Sello, 481 (ZMB, designated by Moure, 1994). SCHROTTKY, 1902: 533. Tapinorrhina latitarsis: MouRE, 1994: 273-276. Tapinotaspis latitarsis: RoiG Alsina, 1997: 17, Fig. 10. MouRE (1994) designated a 9 lectoype and provided a detailed redescription of that specimen. The unknown 6 isbrieflydescribedbelow.The 9differsfromthatofT. ogloblinibythelackofshortdecumbent pubescence on the scutum, by the shorter flagellomeres, by the second flagellomere being entirely black orwith orange on a reduced apical portion, and by the metasomal apical band on T3broadly interrupted in the middle. 3: Length 6.0-6.5 mm; length of forewing 5.0-5.2 mm. Coloration and vestiture: Similar to that of 6 T. ogloblini, except clypeus entirely black. Morphology: Proportion of lower to upper interocular distance, 0.8:1. Proportion of ocellocular to postocellar distance 0.9:1. Distancebetween lateral ocellus and posterior margin ofhcad 0.5 times ocellar 49 Figs. 4-6. Tnpinotaspis nordestina sp. n., S: 4,S7, ventral view (left half); 5, S8, ventral view; 6, geniFal capsule, ventral (left) and dorsal (right) views. Scale line = 0.5mm. diameter. Proportion of antennocular to interantennal distance, 0.53:1. Proportion of scape, pedicel and first six flagellomeres 3.7:0.8:1:1.3:1.5:1.6:1.5:1.5. Clypeus 2.2 times broader than long. Pygidial plate with lateral margins converging apically; apex broadly rounded. Disc of sixth sternum with lateral preapical strongly sclerotized toothlike projection; lateral margin of sternum also with a toothlike albeit smaller projection, v^hich is connected to the discal projection by weak carina (Fig. 7). S7-8 and genital capsule as in Figs. 8-10. For differences with T. latitarsis, see diagnosis of this species below. Distribution: Brazil (Curitiba) and Uruguay (Montevideo) according to Friese (1899), Argentina, provin- ces of Entre Rios and Buenos Aires. Material studied: Brazil: 19 "Brasil, Sello, 481" from the type series (ZMB). Argentina: Entre Rios: 2?$, Pronunciamiento,Zelichcol.(MACN).BuenosAires: 1$ and266,PuntaLara,3-XII-1946,A.M.(MLP); 19,Punta Lara, ll-XII-1934, Daguerre (MACN). J. Tapinotaspis ogloblini sp. n. (Figs. 3, 11-13) Tapinotaspis cf. latitarsis: Cocucci et al. 2000: 64, 69. Diagnosis: Speciescloselyrelated to T. latitarsis, whichitresemblesinsize, colorandgeneralappearance. Thetwo speciessharethelateral discal projections onthe 6 sixthsternumand thebare apexofthe 5 hind basitarsus. Tapinotaspis ogloblini canbe differentiated from T. latitarsis by the yellow clypeus ofthe 6, the longer flagellomeres inbothsexes, the type ofpubescenceon the 9 scutum, and the shapeofthe S sterna 6-8 and genital capsule. S holotype: Length 6.5 mm (paratypes, 6.5-7.0 mm); length of forewing 5.5 mm (paratypes, 5.3-5.6 mm). Coloration: Integument of body black, except yellow clypeus, yellowish tibial spurs, and reddish- brown tarsi, pygidial plate and condylar surface offlagellum. The clypeus is extensively yellow, except a narrow lateral black stripe. Wings hyaline, slightly infuscated; veins and pterostigma dark-brown. Vestiture: Pale, whitish all over the body, exceptbrownish on base of metasomal terga T2-6 and on 50 Figs. 7-13. Tapinotaspis latitarsis (Friese), d: 7, S6, ventral view (left half); 8, S7, ventral view (left halt); 9, S8, ventral view; 10, genital capsule, ventral (left) and dorsal (right) views. Tapinotaspis ogloblini sp. n., 3: 11, S6, ventral view (lefthalf); 12,S7, ventral view (lefthalf); 13,genital capsule, ventral (left)and dorsal (right)views. Scale line=0.5 mm. 51 inner side oftarsi. Head, thorax and propodeum with long, erect, plumosehairs, those on face as long as 1.0-2.5 times flagellar diameter, those on scutum 1-3 times flagellar diameter, and those on mesopleuron 3 times flagellar diameter. Metapostnotum glabrous and shiny. Metasomal terga with dense apical bands ofappressedhairs, restrictedtolateralthirdonTl,butcompleteonT2-6;baseofT2-6withscatteredhairs; T7withlonghairslaterally;uppersurfaceofpygidialplatecoveredwithhairs. ApicalfringesonS3-5with hairs straight, surpassing posterior margin of sterna. Sculpture; Integumentsmoothandshinybetweenpunctures. Facewithsmallpunctures1-3diameters apart. Punctures on scutum larger, irregularly distributed, separated by 1-3 times their diameter, denser on Center of scutum. Mesopleuron with small scattered punctures. Morphology: Proportion of lower to upper interocular distance 0.8:1. Proportion of ocellocular to postocellar distance 0.9:1. Distancebetween lateral ocellus and posterior margin ofhead 0.4 times ocellar diameter.Proportionofantennoculartointerantemialdistance0.55:1.Proportionofscape,pedicelandfirst six flagellomeres 3.7:0.8:1:1.8:1.8:1.8:1.7:1.8. Clypeus 2.25 times broader than long. Pygidial plate with lateral margins converging apically; apex broadly rounded. Sixth sternum with lateral preapical strongly sclerotized carinate transverse projection; lateral margin of sternum continuous, without projection (Fig. 11). S7 and genital capsule as in Figs. 12-13. S8 almost identical to that of T. latitarsis. ?: Length 6.5-7.6 mm; length of forewing 5.3-5.6 mm. Coloration: Similar to that of S, but clypeus black; condylar surface of flagellomeres 2-10 orange, in a few specimens base of second flagellomere dark, and in a few others apex of first flagellomere orange. Vestiture: Similar to that of 6, but shorter. Pale, whitish all over the body, except brownish on base of metasomal terga T2-4, on Sl and on iraier side of tarsi; hairs of pygidial fimbria also brownish. Hairs onfaceaslongas1.0-2.3timesflagellardiameter,onmesopleuron2-3timesflagellardiameter.Scutumwith two strataofhairs: one oferect, finelybranched hairs as longas 1-2 timesflagellardiameter (shorterones onanterolateralanglesofscutumandborderingtegula),andanotheroneofdecumbentshorthairs, aslong as 0.3-0.5 times flagellar diameter (Fig. 3c-d), although some intermediatehairsoccur (Fig. 3f). Metasomal tergawithapicalbands as follows:Tl withlateral patch, T2withband restrictedto lateral fourth, T3with band briefly interrupted in middle, and T4 with band complete. Morphology: Proportion of lower to upper interocular distance 0.85:1. Proportion of ocellocular to postocellardistance0.83:1. Distancebetweenlateral ocellusandposteriormarginofhead0.6timesocellar diameter. Proportion of antennocular to interantemial distance 0.75:1. Proportion of scape, pedicel and first six flagellomeres 2.6:0.7:1:0.5:0.7:0.8:0.8:0.8. Clypeus 2.5 times broader than long. Paraglossa beyond apex of Suspensorium 1.5 times as long as Suspensorium. Propleuron without lateral carina. Profile of scutellum weakly convex, that of metanotum convex, slanting to rear, that of metapostnotum and propodeum basaly slanting to rear, then abruptly so. Forecoxa and trochanter with long hairs, without spiniform setae. Middle tarsus elongate, proportion of basitarsus to following tarsomeres 1: 0.28:0.25:0.25:0.28;brushesofdense, oil-collectinghairspresentonapexofbasitarsus, tarsomeres2-4and ondistotarsus.Hindbasitarsuswithapicalprojectionpointed;apexdevoidofhairs.Jugallobeofhindwing 0.38 times as long as vannal lobe measiired from wingbase. Pygidial plate triangulär, with apex broadly rounded. Etymology: The species is named after Alejandro Ogloblin, who described several remarkable bees from Argentina. Comments: I have observed this species collecting oils from flowers of Sisyrinchium platensis (Iridaceae). SpecimensofT.oglobliniandT.latitarsishavebeencollectedflyinginthesameplaceatthesametime(Punta Lara, 3-XII-1946). Distribution: Argentina, provinces of Entre Rios and Buenos Aires. Materialstudied: Holotype 6, Argentina, BuenosAires,PartidoFlorencioVarela, 5 km SEBosques, 13-XI-1996, A. RoiG Alsina (ex Sisyrinchium platense) (MACN). The following are paratypes. Argentina: Entre Rios: 366, PrimerodeMayo,13-XII-1957(MLP).BuenosAires:1?and16,PuntaLara,3-XII-1946,A.M.(MLP);499 and466, samedataasholotype(MACN);899,samedataasholotype,butcollected 15-XI-1997(MACN,ZSM,IFML);899, same data as holotypebut collected 29-XI-1998 (MACN). 52 Acknowledgements IamgratefultoProf.StefanVogel(Vienna)forprovidingtheinterestingspecimensofTapinotaspis?iordestina.This paperwaspreparedwiththeaidofgrantPIP0596-98,ConsejoNacionaldeInvestigacionesCientificasyTecrdcas, Repüblica Argentina. Literature Bertoni, A. de W. & C. ScHROTTKY 1910: Beitrag zur Kenntnis der mit Teiralonia verwandten Bienen aus Südamerika. -Zool. Jahrb., Abt. Syst. 29, 563-596. Brethes, J. 1910: Himenöpteros argentinos. -An. Mus. Nac. Buenos Aires 20, 205-316. Buchmann, S. 1987: The ecology ofoil flowers and theirbees. - Ann. Rev. Ecol. Syst. 18, 343-369. Cocucci, A. A. 1991: Pollination biology ofNierembergia (Solanaceae). -PI. Syst. Evol. 174, 17-35. Cocucci, A. A., A. Sersic & A. Roig Alsina 2000: Oil-coUecting structures in Tapinotaspidini: their diversity, function and probable origin. -Mitt. Münch. Ent. Ges. 90, 51-74. Friese, H. 1899: Monographie derBienengattungen Exomalopsis, Ptilothrix, Melitoma und Tetrapedia. -Ann. K. K. Naturhist. Hofmus. 14, 247-304. Friese, H. 1906: Neue Bienenarten aus Chile und Argentina. -Z. Hym. Dipt. 6, 169-176. Holmberg, E. L. 1903: Delectus hymenopterologicus argentinus. -An. Mus. Nac. Buenos Aires 9, 377-517. Machado,I. C,S. Vogel&A.V.Lopes2002:PollinationofAngeloniacornigem Hook. (Scrophulariaceae)bylong legged, oil-collectingbees in NE Brazil. -Plantbiol. 4, 352-359. MiCHENER, C. D. 2000; Thebees ofthe world. -Johns Hopkins Univ. Press, Baltimore and London, 913 pp. Michener,C.D.&J.S.MOURE1957:AstudyoftheClassificationofthemoreprimitivenon-parasiticanthophorine bees (Hymenoptera, Apoidea). - Bull. Am. Mus. Nat. Hist. 112, 399-451. 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Neff 1981: Floral rewards: alternatives to pollenand nectar. -Ann. Missouri Bot. Garden 68, 301-322. Vogel, S. 1974: Ölblumen und ölsammelnde Bienen. -Trop. und Subtrop. Pflanzenwelt7, 285-547. Vogel,S.1988:DieÖlblumensymbiosen-ParallelismusundandereAspekteihrerEntwicklunginRaumundZeit. -Z. Zool. Syst. EvolForsch. 26, 341-362. Author's address: Dr. Arturo Roig-Alsina Museo Argentino deCiencias Naturales "Bernardino Rivadavia" Av. A. Gallardo470, 1405 Buenos Aires, Argentina E-Mail: [email protected] 53