gr::p ~~ be~n examined. The following museums

Transcription

1 Vol. 7, No.1 2, March June, Sooth Arner iean Oxybelus II. The emarginaius groop (Hymenoptera, Sphecidae) Richard M. Bohart Departlilelit of Entoiliology University of California DaVIS, CA U.SA Abstract. The 1~ Sout~ American me.mbers of ~he Oxybelus emarginatus group are keyed, new species described, and Illustrations given. Nt:w species are. cmemuclo (Atgentina), genisei (Brazil), mendozae (Atgentina), 8chlinget i (Venezuela), schusten (Galapagos), slanskyae (peru), stangei (Argentina), uardyi (peru), and wasbaueri (Ecuador). Introduction Thomas Say desclibed Oxybelas emarginatas (1837). This common North American species is the first Of its group to be named from the western hemisphere. Itwas redescribedandfiguredby Bohart and Sehlinger (1957). I have identified 13 related speciesin SouthAmerica. Oneofthese is 0. cordatus Spinola (1851), which I have treated in a separate paper (Bohart, 1992) Ofthe remaining 12, one was named by Brethes (1913),0. modestus, a homonym 'Nhich I renamed Fritzi (Bohart, 1993a). Pate (1943) named 0. callani andpolyceros. Theother9 species are desclibed herein as new. The emarginatus group is characterized hy having a relatively simple male clypeus. Although broad in typical crabronidfashion, it is covered with silvery pubescence and has a weakly dermed median lobe. Thi:8 may endapically in one to three smallpockets or areoles. There is no indication of the three rather prominent teeth characteristic of males in the other largegroup exemplified byunightmis Tannam 's( 1758) Females are less easily characterized. However, the median clypeal carina of the emarginatu8 group is mostly obscured by pubescence and not raised into a tooth as in members of the uniglumis group. In addition, a Ilsefulblltlesspositivefact is that thebody lengthoftheemarginatus group isusuallyabout3-3.5 mm(male) and4 5mm (female). Sexesoftheuniglumis group are usually considerably larger. Charactels of impoitance ill species distinction arefirst the natureofthe squamae(winglike metanotal projections) and mucro (spadelike upper median propodealprojection). The squama may be slenderor bload but neatly always has a point whose locatiml short or long, all dark or with varying degrees of translucent membrane, straight-sided or flaring toward the apex. As in most Ox:vbelas, all members of this group have the mucro apex slightly to obtusely emarginate. Color characters are useful but they ;Jlst be ll~ef witb au~on ;e~b~al forewing pl~te ost tegu a may be re or ack; ut somevanatlon mustbe expected. Like..vise, the female pygidialplate ~ red in.some species, black in others. However, mtermedmtes 01 exceptions may occasi<mally occur can be used taxonomically in both sexes. Still, markings ale subject to smile valiation ill widesplead species. Several thousand specimens of the ematginatus gr::p ~~ be~n examined. The following museums capitals. BUENOS AIRES, J. Genise, National Museum of Argentma. DAVIS, I, Kimsey, S Heydon, I IniYersity of California Bohart Museum. GAINESVIIJ.E L Stange, Florida State Collection of Arthropods, ITHACA, G. Eickwort, E. Hoebeke, Cornell University. LAWRENCE, R. BrOOKS, University ofkansas Snow Museum. LOGAN, G. E, Bohart, Utah State University.

2 20 Insecta Mundi LONDON, e. Vardy, The Natural IIiStOly Museum. NEW YORK, J. Rozen, American Museum of Natural History. SACRAMENTO, M. Wasbauer, California State Department of Agriculture. SALTA, M. Fritz, Institute of Entomological Investigations SAN FRANCISCO, W Pulawski, California Academy of SCIences. SAO PAULO, S T P Amarante, Universidade de Sao Paulo. STIITTG ART, T Osten, Staatliches Museum fur Naturkunde, Germany. TI ICI IMAN, A WiIlink, Miguel Lillo Institute TURIN, A. ROland, Umversita di Tormo, Itaha. WASHIN< ;T< IN, A Menke, I I S National Museum 6. 7 Legs, including hindfemur, extensively r"d, mucio short, broadly flared, partly translucent (fig. 1), female py gidial plato red lritzi Dohar t Legs not extensively red, hindfemur mostly black; other characters various 7 Mucro nearly all translucent white (fig 9), vertex area between and behind lateral ocelli unusually coarsely punctate, tergalpare bands usually complete ont-i toivatleast, post-tegula yellow to red... cmemucro Bohart Mucro at most part.ly paje, vertexarea between and behmd lateral ocelli WIth moderate punctatlon, tergal palebandsincomplete medially, post-tegula various 8 Last two terga extensively red 9 Terms used in the keys and descriptions which Last two terga not both extensively red, T-'; in female sometimes with a reddish posterior rim may need explanation are: LID, least interocular distance, eye breadth (single eye), as seen from directly infront offace: MOD, median ocellus diameter; 9. Mucro flaring to'nard apex (fig. 4); terga closely T-I, T-I1, etc., terga after propodeum; PD, puncture punctate, dull; male with T-V to VII red; male diameter. hindmetatarsus yellow (Chile).... cordatus Spinola Mucro straight sided or sides converging, unusu Key to South American species of Oxybelus in the emarginatus group. 1. Squamal pomt postenortomnerlobe, Ifany (figs. 6, 11, 12) 2 Squama! point, not or hardly exceeding inner lobe posteriorly (figs. 1, 5) 5 2. Last two terga extensively red, squama with tiny point and associated inner lobe (fig. 6), posttegula red, T-I1 well punctate.... vardyi R. Bohart Last two torga not both red, squama with point usually strong(figs. 11, 12), post-tegulaandpunctation \I anotls 3 8. allysmallin female (fig. 5); tergashiny, punctures separated; male T V dark; male hindmetatarsus dark wasbaueri Bohart 10 Mucro expanded or flared toward apllx (figs. 2, 3), SIdes somewhat translucent 11 Mucro nearlyrarallel-sided, not much, ifanytranslucent (figs. I, 8) T-II punctatlon fme and close, scape nearly always yellow in front, pronotal collar maculate, posttegula brown or red genisei Bohart 'f-iipunctationcoarseandclose. scapedarkpronotal collar black, post-tegula black..... mendozae Bohart T II and others -.",eakly punetate, semipolished, post-tegula black; female pygidial plate black..... swnskyae Bohart T-Il with medium to coarse punctation, post-tegula red or black, female pygidial plate red 4 Scare yellow m front, LID ollemale about equal to eye breadth, scutellum and metanotum offemale sometimes all yenow callam Pate Scape mostly black, LID of female about 1 5x eye breadth, scutellum and metanotum of female often all black or nearly so stnngei Bohart Vertex quadrituberculate polyceros Pat.e Vertex with at most a weak median swelling Squama! pointordinarily not visible from above (fig. 8); mucro ofmale rather stout about as in (fig. 8), apex about 3 MOD wide (Galapagos Is.)..... schusteri Bohart Squama! point easily visible from above (fig. 7); mucro ofmale slender (fig. 7), apex about 2 MOD wide schliltgel i Bohart Oxybelus cinemucro R. Bohart, new species Female holotype. Length 5 mm. Black marked with light yellow: mandible mostly, spot above on scape, pronotal collar and lobe, post-tegula mostly, squama (plus translucency), mucro (plus translueency), distal spots on femora, fore and midtibiae

3 Vol. 7, No.1 2, March - June, outwahuy, basal half of hindtibia, all tarsi mostly, complete bands on T-Ito IV, that on I broadly emargtnate 10 front; reddish are: most offlagellum dully, post tegula partly, pygidial Pla~e; wings nearly?;ar. abundant across apices ofterga, sparseon pygidium. Punctation moderately fine and close on vertex, scut.um, mesopleuron, and t.erga UD equal to eye breadth, squama longovalwith pomt aimostmvisible from above (fig. 9), mucroa little shorterthansquama, expanding from base, apical emargination almost semicircular, indentations between terga deep (side view), pygidial plat.e angled at. 50" Male. Length 4 5mm. Pronotalcollarrarelyblackor partlyso, mucroapexlessdeeply emarginate,hindtibia more extensively yellow, lateral spines prominenton T-Il to VI. Argentina), 38males and5femalesfrom thefollowing Provinces: Salta: Cafayate, San Carlos; Catamarca: Belen, Punta de Balastos; Misiones. Loreto; SantiagodelEstero: TermasRio Hondo; LaRioja: Macasm, ChiLecIto; San Juan: Caucete; Mendoza: Beazley, Arroyo Carmal; Neuquen: near Zapala, Co1l6n CUrli; Rio Negro: ChoeleChoel, PasoCordoba. Monthly dates are f10m October to March. Paratype collectors and depository Museums are: L. Peiia (NEW YORK, DAVIS, ITHACA, WASillNGTON, &L\O PAULO, SACR..WENTO, LONDON; L. Stange + A Willink (TUCUMAN); R. Bohart (DAVIS); F. Busq (LAWRENCE); Arldtae (SALTA). This small species is related to {ritzi which also distally expanded mucro (fig. 9), complete tergal bands, and red pygidium. The dark rather than red hindfemm, more extensively pale mucro, and more deeplyconstrictedtergalbasesdifferentiatecinemucro. A few specimens have the scape yellow in fmnt The name refers to the mostly pale mucro. Oxvbelus cordatus Spinola OXybClus comatus Spinola 1851:364. Lectotype Ie male, Chile (TURIN). Thisspecieshasbeendiscnssedpre'1iottsly (Bohart, 1992) The long oval squama, short and expanded mucro (ftg. 4), andredt-v m both sexesarecharacteristic. It is known only from Chile, wherq it is the commonest species. Oxybefus ftitzi R. Bollal t OxybelusmodestusBrethes 1913: 142. Lectotypemale, Argentina. Mendoza (BUENOS AIRES>. Nec Oxybelus modestus Kohl OxybebUI!t;tz; Bobart 1993a' Newname for modestus Brethes, preoccupied TheextenSIvelyredlegs, mciudirigthehmdlemur, as well as the short and expanded mucro (fig. 1), long oval squama, andincomplete tergalbands characterize the speeies Itis relatively abundantin Argentina butitsrange embraces mostofsouth America, except Chile Oxybelus genisei R Bohart, new species Female holotype. Length 4.7 mm. Black marked withyellow: mandiblesmostly, seapeinfront, pronotal collar and lobe, squama partly (plus translucency), femora distally, tibiae on fore andmidlegs outwardly, bindtibia basally, T-T to III laterally, transverse spot on T I largest; reddish are: flagellum mostly, tarsi dully, pygidial plate; wings weakly stained. Pubes cence silve~, reachin: u~ to middle of e~e, moderately abun uton gen an mesopleulon,lesentbut weak on t.ergal apices; pygidial setae reddish golden Punctation fme and close, mesopleuron and terga a little shiny. UD equal to eye breadth; squama long oval with point short (fig. 3); mucro short and broad, partly membranous (fig~ 3), pygidial plate angled at 60". Male Length mm Pronotal collar somqtlmqs dark medially, T-VII dark red or sometimes dark brown, hindtibia allyellow outwardly. Lateraltergal sines weak but resent on V-VI. o 0 ype e e, ova eu onia, an a Catarina, Brazil, (F. Plaumann). ParatypQs, 44 males, 29 females, topotypical (F. Plaumann). Other paratypes, 11 males, 12 females, Para, Brazil musenms 'I'he short, broad, flanng, and partly translucent mucro (fig. 3) is similar to that offritzi. HO'.vever, the these as a distmct species, but I now place them as a variety. The female pygidial plate is rarely partly or all dark. This is a relatively abundant species, especially in Brazil and Argentina, but I have seen mate-

4 22 Insecta Mundi rial from all other South American LiJuntries, except Chile It is named for Jorge Genise, a well-known Argentme worker m Aculeate Hymenoptera. Oxybelus mendozae R. Bohart, new species Female holotype. LQngth 4.5 mm. Black marked with yellow: mandible mostly, squama, mucro on distal half (translucent), all tibiae basally, apical streaks on lateral third oft-i to III; reddish are: fore and midtibiae partly, last abdominal segment; wings lightly stained. Pubescence pale, moderately dense on head, scutnm, and mesoplenron; present but modbreadth, squama long ovalwith point lateral(fig. 2), erate on apicesoft I tov, off silveryon pygidialplate. PunctationmoderateandfairlycIoseonvertex, scutum and mesopleulon; close on telga. LID equal to eye mucro a little sborter tban squama, expanding ftom base, apicalemarginationobtuse,pygidialplateangled at 50". Male. Length 4-5 mm. Rindtibia more extensively yellow outwardly, tetgal bands nam)w but often nearlycompleteont-i tov, silverhairedtergalapices monl promin~mt,punctation a litthi morecoarse, T III to VII with slender but distinct lateral spines. Holotype female (TUCUMAN), Tupungato, Mendoza, Argentina, (A Willink). Paratypes from Argentine Provinces: Mendoza: 1 female, Tupungato(A Willink); 5 males, Potrerillos (A Willink, etc.), 3 males, Las Helas (A 'Nillink), 1 male, Pie del Cella de la Glotia (A. Willink). La Rioja. 1 female, Quebrada la Guadica (A Teran, A Willink); 2 males near Angulos (C Porter, I. Stange) Paratypes in museums at TUCUMAN and DAVIS, allcollected in December and January. Oxvbelus mendozae is similar in most re:ects to genise[bothhaving Umdarkpost-tegula,ovaluama, andbroadened mucro (fig 2) Themorecoarsescutal punctation of mendozae is a consistent difference. Also, the absence Of markings on the scope and pronotum are additional characters. The species is known only flom Argentina. Oxybelus schlingeri R. Bohart, new species Female holotype. Length 5 mm. Black, marked with light yellow: mandible mostly, lateral third of pronotal collar, lobe, lateral scutellar dot, squama, distal spots on fore and midfemora, all tibiae externally, lateralspotsin diminishingsizeont-} toiii, led are. flagellum beneath, post-tegula, pygidial plate, wings lightly stained Pubescence silvery on face. gena, mesopleuron, and laterally on T-Il-V, pygidial setae bright coppel}'. Punctation fine and close on mesopleuron and scutum, weak and fine on semipolishedtelgao LIDequaltoey ebreadth; squama about as broad as long, notched posteriorly between inner lobe and point (fig. 7); mucro dark, short, pa~-sided,apicalnotch at90"; pygidialplateangled at. Male. Length 4.5 mm. Clypeus with a narrow indentation on medial edge, tarsi yellowish, muclo twice as long as broad Holotypefemale(DAVIS), ElTucuco, Perija, Zulia, Veml:wQ}a (..A~ A. Grigarick, et al.). Paratype~: 't- Vincent); 2 females (WASRINGTON), Rosario (A Menke, D. Vincent); EclKidQr: 2 females (LONDON, DAVIS), Tungurahlla, Yanayacll (L Peiia); 3 females (SAN FRANCISCO), mm. SantaElena, Guayas (E. Ross, E. Sehlinger); male (SAN FRANCISCO), 10 mi n. Manglar, Alto, Guayas (E. Ross, E. Schlinger); male (GAINESVILLE), Pichinca, San Rafael, Quito (C. Porter, A Cerbone); Colombia male, 5 females (WASHING'IUN, DAVIS), '1'01. AlIriero (E. Peyton); Peru: 3 males (SAN FRANCISCO, DAVIS), Chancay River Valley (E. Ross, A. Michelbacher); 2 males (LONDON), Rio Mocha, 4 k S. Trujillo (C. & M. Vardy); 2 males (LONDON), Simbal (C. & M. Vardy); mahi (DAVIS), TrujillO CitY (C. & M. VardY); remahi (LONDON), 100 k n. Trujillo City (C. & M. :Vardy). Collection dates were January to August. Both sexes of this species have the telgal markings lateral, squamal point not plainly posterior to inner lobe but visible from above (fig 7), and mucro rather narrow and dark. Thefemale pygidialplate is red. Abouthalfofthe specimens I have seen have the post-tegula black instead ofled. } have not included this variety in the type series. The species is named for my friend, Evert T Schlinger, who collected some of the paratypes. Oxvbelus schusteri R. Bohart, new species "female holotype. Length 5.5 mm. Black marked with yellow: mandible, pronotal collar and lobe, latelalscutellal spot, metanotum, apieov entral spots on fore and midfemora, foretibia in front, mid and hindtibiae basally, lateral spots on T-I W V; red are: flagellum dully within and apically, post-tegula, pygidialplate; wingslightly stained. Pubescencesilvery

5 Vol. 7, No.1-2, March - June, fritzi 2. mendozae :3... gen,sel 5. wasbaueri 6. vardyi 7. schlingeri 8. schusteri 9. cinemucro 10. polyceros 11. stangei 12. slanskyae Figures 1-12 All figures are ofthe metanotal squamae and propodeal mucro off'emales These are comparative and not drawn to scale.

6 24 Insecta Mundi 011 face, postoculal alea, mesopleuioli, and telga apicolaterally: mostlybrownishonmesonotum, golden on pygidial plate. Punctation moderately fme and close, terga a little shiny un equal to eye breadth; squama long oval, pomtobscuredfrom above (fig. 8); mucro stout, as long as squama, emargination semi circular; pygidial plate angled at 55. Male Length mm Legs more extensively yellow, all tibiae yellow outwardly, tarsi mostly yellow, squamae separated by black, post tegula some what brownish red, pygidium brown, lateral tergal spines inconspicuous. Holotype female (DAVIS), Darwin Research Station, Santa Cruz Island, Galapagos Islands, Ecuador, (R. O. Schuster). Paratypes, 5 males, 41 females, samedataasholotypebutvarious datesinii 64; 4 males, 2 females, same island as holotype, Bella Vista Trail, II-1l-64 (R. O. Schuster). Paratypes distributed to cooperating museums Related species With redpost-teguia andpygldiai plate are wasbaucri and schlingeri, both from north emsouthamerica, anddescribedherein. Inwasbaueri the red-marked last two terga, dark female hindmetatarsus, and sharp tooth flanking the median clypeal area are dlstmctlve. In schlingen the shorter squama with well separated point, and the less expanded mucro (fig. 7) will differentiate. The speciesisnamedformyfriend,thelaterobertschustel whocollectedthe typeseries. Thespeciesisa Galapagos endemic Oxybelus slanskyae R. Bohart, new species Female holotype. Length 4 mm. Black marked with yelky...: mandible mostly, pronotal collar (dark medially)and lobe, squama, apicoventral spoton fore and midfemoia, Ore and midtibiae outwmdly, hindtibiabasally, T-I with lateralspot, T-II to IV with thin apical marks; reddish are: flagellum beneath; wings weakly stamed: Pubescence sil'1~ry, oons~ on lower half of face, moderate on mesopleuron and tergal apices, setae ofpy gidial plate golden. Punctation fme and close on vertex with slight transverse microridging, fine and close on scutum, fine and a little separated on m~sopliluron, fln~ and weakly impressedon overall polished terga. LID about equal to eye breadth, squama with point slightly but distinctly posterior (fig. 12), mucro partly membranous, pygidial plate angled at 50". Male. Length nlin. Antennasomewhatdalkel, pronotal collar mostly black, tarsi yellowish toward base. Holotype female (DAVIS), TIrigo Mana, Huanuco, Peru,VI (M. Wasbauer,J. Slansky). Paratypes, 7 males, 10 females, same data as holotype except VI One male paratype Huachi Beni, Bolivia, x 1921 ()V M Mann, WASHINGTON) Paratypes at cooperatmg museums. Distinguishingcharacteristicsincombinationare the black post-tegula and last tergum, slightly postelim squamal point (fig. 12), incomplete telgal malkings, spotted midfemur, and overall polished terga The species is named for my friend, Joanne Slansky Wasbau~r, who participat~d in colwction of most of the type series. The species is known only from Peru and BoIYv-ia. Oxybelus stange; R. Bohart, new species Female holotype. Length 4 mm. Black marked with yel1ow' mandible mostly, pronotal lobe dully, forefemur distally, fore and midtibiae outwardly, hindtibia basally; reddish are: flagellum on distal half, pygidial plate; wings clear. Pubescence silvery, reaching nearly to midocellus behind eye, thin on mesuvleuion, weak on terga but mole prominent on T-V, pygidial plate with relatively long, well spaced, silvery setae PnnctatiOri moderate onvertex, mooerately coarse and a little separated on mesonotum, moderate but separated by shiny areas 1 2 PD 011 mesopleuioilandtelga. LID 1.5xeyebleadth,squama about as broad as long, lateral point slightly but definitely exceeding inner lobe posteriorly (fig 11), black mucro about as long as squama, flared toward apex, pygidial plate angled at 5()'. Male. Length l1I1l. Squama with mille pionounced posterior point and partlyyellow, LID equal to eye breadth, hindtibiawith yellow streakfor entire limgth, 1'-1 II with small lateral yellow spots, T IV to VI with short lateral spines, T-VII dark. Holotype female (fucuman), Angustaco, Salta, Argentina, XII-7-68 (A Willink, L. Stange). Paratypes, 5 males, 1 female (I'OCOMJlON, DAVIS, l'l'haca), same data asholotype. Other paratypes from Argentine Provinces. Salta. 10 males, 1 female (LAWRENCE, DAVIS, SALTA), Cafayate (1. Penal: Rio Negro (DKv1S), female, Isla Choele Choel (J. & L Stange); Catamarca' 3 females (TUCTIMAN, WASHINGTON), Los Nacimientos de Abajo (A

7 Vol. 7, No.1-2, March - June, 'Nillink, etc.), male (DNvqS), Belen (R. Bohalt), 2 males (DAVIS), Andalgala (G. Bohart); 7 males (NEW YORK, DAVIS), Punta de Belasco I,L. Pena); female (LONDON), Santa Maria (C. & M. Vardy); La Rioja: 2 males (NEW YORK, DAVIS), E. Villa Umon (L. Pena); Santiago del Estero: 7 males, 3 females (LONDON, DAVIS), San Fernando. Also, paratypes from Bmzil. Santa Catalina. 7 males (LONDON, DAVIS, WASHINGTON), Nova Teutonia (F Plaumann); BohvIa: male (LAWRENCE), Las Carreras. Paraguay: Parana: male (NEW YORK), Saltos del Guaira (L. Pena). Collection dates range iron adobe! to MaIch. Characteristic of 0 stangei are the small size, female (LONDON), Chiclayo, Lambayaque, Tv ; male (LONDON), Cieneguilla, 27 k se Lima, IV (C. & M. Vardy); male (LONDON), RIO Mocho, 4 k s. Trujillo, V-I-83 (C. & M. Vardy); 2 males, 1female (SAN FRANCISCO, DAVIS), Chancay River Valley, III 1551 (E. Ross, A Michelbaeher). Oxybelus vardyi is similar to callani Pate, which also has the squamal point posterior, as well as the post-tegula and pygidial plate red However, the formerdiffers m thedistmctive squamalshape(hg. 6), closer punctation, andredon the prepygidial tergum. The species, known only from Peru, is namedfor my friend, Colin \'aidy, who has collected Hymenoptera extensively in South America Oxybelus wasbaueri R. Bohart, new species broadened LID, and mostly black terga except red T VI. A similar species is callani Pate, but that has the Thespecies is namedformy friend, LionelStange, who has been an anlent collectoi ofhymenoptem in South America. The species occurs in Argentina, Brazil, and Paraguay. Oxybelus vardy; R. Bohart, new species Female holotype. Length 4.5 mm. Black marked with yellow: mandible mostly, scape in front, pionotum, latelal scutellal spot, squama (plus tulllsparency), distal spots on fore and midfemora, tibiae outwardly, fairly large lateral spot on T-I dorsum, narrower spots separated by a spot length on T-II-IV posteriorly; reddish are: apical half of flagellum beneath, tegula and post-tegula, last 2 abdominal segments, wings lightly stained. Pubescence mostly silvery, off-silvery on mesonotum, golden on pygidial plate. Punctation fine and close on vertex, scutum, mesopleuron, and terga. LID equal to eye breadth, squama a stout triangle with point slightly exceeding small innel lobe (fig. 6), mucio about as long as squama and flaring slightly, pygidial plate angled at Male. Length 4 mm. Mucro a little longer. Holotype female crucuman), Lurin, Lima, Peru, (R. GarCIa). Paratypes, all rom Peru: male (DAVIS), samedataasholotype; 3maUlS (fucumw, DAVIS), nearlurin,lima, I1I-1-52(W. Weyrauch); 1 Female bolotype Length 5 mm Black marked with whitish yellow: mandible mostly, pronotal lobe and lateral spot on pronotal collar, scutellar spots, squama(plus transpareney), femorotibial joint oho!e andmidtibia, restofforetibiaoutwardly, basalspoton hindtibia, narrow lateral spots on T-T to TV; reddish are: flagellum within, post-tegula, last abdominal segmentandmostof preceding; wings weaklystained. Pubescence silvery, reaching up about to middle of frons, moderateon mesopleuron andapicolaterallyon terga, golden on pygidium Punctation nne and close on vertex and scutum, fine and a little spaced on mesopie1lron, llppermesopieuronwithsomefine ridging, fme andweakly impressedon semipolishedterga. Comers of median elypeal area sharply PIOjecting, LID equal to eye bleadth, squamal point small and posterolateral but not exceeding inner lobe (fig. 5), short mucro with sides transhlcent and a little converging to a weakly emarginate apex (fig. 5); pygidial plate angled at 50", sides a little eorrv'ex. Male. Length4-4.5 mm. Median clypeallobe without a Sharp lateral tooth, UD a little less than eye breadth, T-I-I1I with small pale spots laterally, T-IV sometimes black, tibiae Often with yellow streaks outwardly, hindmetatarsus black, mucro black, slendel, modemtely emmgillate atapex, no lalemlteigal spines Holotype female (DAVIS), Rio Chota, Carchi, (35 k on Ibarra-Tulcan section of Pan American Hiway, EcuadOI, }-2-90 (M. & J. Vv'asbaueI). Pamtypes, 10 males, 14females (SACH AMENTa, DAVIS and other cooperatmg museums), same data asholotype. Other paratypes, male, female (WASHINGTON), Calderon, Pichincha, Ecuador, V-I-58 (R. W. Hodges).

8 26 Insecta Mundi Chataclmistic in combinatimt ate thetedlast two terga, red post-tegula, finely punctate mesopleuron, semipolished terga, mcomplete pale tergal bands, squama as described above, and unusually small (female) or narrow (male) mucro. Also, male hindmetatmsus is black. The unique squama-mucio structure(fig. 5), redpost-tegula, andrestrictedmarkings on the polished tmga distinguish it fwm related species Itisnamedfortheardentcolleetor, myfriend, Manus Wasbauer. Known only from Ecuador. Literature Cited Bohart, R. M The genus Oxybelus in Chile. J. Hymenoptera Researeh 1: Bohart, R. M. 1993a. South American Oxybelus I. ate, ancrotty.nsecta Mun 6:1 : 1. Bohart,R. M. ande. I. SchlingeI California wasps of the genus Oxybelus. Bull. Calif. Insect Surv. 4: Brethes, F. J Himen6pteros de la America Meridional Anal. Mus. Nac. BuenosAires 24: Linnaeus, C. von Systemanatume etc. 10th ed TamilS I 823 pp Laurentii Salviae, Holmiae Pate, V. S NeVi South American Oxybelu8. Revista de Entomologia 14: Say, T Descriptions of new North American Hymenoptera and observations on some already described. Boston J. Nat. Rist. 1: Spinola, M In Claudio Gay, Historia fisiea y politica de Chile, Zoologia. Vol. 6: