Perdita wasbaueri Timberlake
Creators: name: Portman, Zachary M.
name: Neff, John L.
name: Griswold, Terry
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Perdita
Perdita wasbaueri

description: Perdita wasbaueri Timberlake
Figs. 4 D, 5C, 6G, 7G, 8G, 9H, 23T, 24V, 51B, 54, 57G, 60I –J
Perdita (Heteroperdita) wasbaueri Timberlake, 1960: 126, ♂♀. Holotype ♀ (CAS type no. 14753), Mecca, Riverside Co., California, USA.
Diagnosis. Both sexes of P. wasbaueri have the metasoma yellow with dark spots (Figs. 6 G, 7G), the face completely light below the level of the antennae (Figs. 8 G, 9H), and the scutellum yellow (Fig. 5 C). This combination of characters separates it from all other species of Heteroperdita. The female can be further distinguished by having the head much broader than long and the second medial cell absent (e.g. Fig. 4 D). The male can be further distinguished by the very broad head with the eyes strongly convergent below, the propodeum entirely yellow, and the pygidial plate broadly triangular (Fig. 23 T).
Redescription of female. Length: 2.7 mm. Forewing length: 1.7 mm.
Coloration. Head (Fig. 9 H) and mesosoma base color black with metallic greenish-bronze luster; clypeus white, yellow on dorsal and lateral margins; supraclypeal mark yellow, large, transverse, filling area between antennal sockets; paraocular mark white below, yellow above, filling lateral area and reaching above antennal socket, extending above and completely encircling eye in thin line (sometimes slightly interrupted at apex); subantennal mark yellow; mandible yellow, tip reddish; labrum white; scape yellow; antenna yellow, more or less brownish dorsally; pronotal collar and pronotal lobe yellow; scutum lined with yellow on lateral margins (Fig. 5 C); axilla yellow; scutellum yellow (Fig. 5 C); mesepisternum more or less yellow on dorsal, anterior, and basal margins; metapleuron yellow (Fig. 54 A); propodeum yellow; ventral surface of mesepisternum entirely yellow; legs yellow except hind distal tarsi sometimes slightly darkened; wing veins transparent tan; metasoma pale yellow with multiple large black spots (Fig. 7 G); T1 with pair of sublateral spots on anterior and posterior face; T2–T5 with five round spots: one medial spot, two small baso-lateral spots (spots on T2 more transverse), and two apicosublateral spots; T2 fovea dark brown; pygidial plate transparent, slightly darkened apically.
Structure and vestiture. Head broader than long (Fig. 9 H); face, except for clypeus, supraclypeal area, and frons, covered in dense white pubescence; eyes strongly converging ventrally; facial fovea diverging dorsally, parallel to eye, narrowly oval, extending from 1 OD above level of top of antennal socket 1/2 distance to apex of eye, relatively deeply scored, generally obscured by pubescence; mandible simple; labrum quadrate, 1.5X broader than long; disc of clypeus broader than high, convex, barely protruding apically from face; lateral extension reaching base of mandible; venter of head with abundant inward-facing broadly hooked hairs; mesosoma strongly tessellate, impunctate, slightly shiny; pronotal collar slightly impressed, humeral angle weak; mesepisternum and scutum mostly covered by combination of recumbent and erect white pubescence; fore coxa and anterior margin of venter of mesepisternum with abundant, broadly hooked hairs; apex of mid tibia with some short, thick, curved setae; forewing with second medial cell absent; second submarginal cell approaching triangular shape; metasoma suboval, wide basally, tapering apically, widest at T3 (Fig. 7 G); terga tessellate and impunctate; T2 fovea linear, slightly thickened, 1/2 length of T2; pygidial plate very broadly triangular, apex bluntly pointed (Fig. 24 V); hairs of prepygidial fimbria slightly thickened, dense.
Redescription of male. Length: 2.4 mm. Forewing length: 1.5 mm.
Coloration. Head (Fig. 8 G) and mesosoma base color black with metallic greenish or greenish-bronze luster; clypeus white, yellow on dorsal and lateral margins; supraclypeal mark yellow, large, transverse, filling area between antennal sockets; paraocular mark white below, yellow above, filling lateral area and reaching above antennal socket, extending above and completely encircling eye in thin line; subantennal area yellow; mandible white, tip slightly reddish; labrum white; scape yellow; antenna yellow, more or less brownish dorsally and apically; pronotal collar and pronotal lobe yellow; scutum lined with yellow on lateral margins; axilla yellow; scutellum yellow; mesepisternum more or less yellow dorsally, anteriorly, and basally; metapleuron yellow (Fig. 54 B); propodeum entirely yellow; ventral surface of mesepisternum yellow; legs yellow except distal hind tarsi sometimes slightly darkened; wing veins transparent tan; metasoma yellowish-white with multiple large black spots (Fig. 6 G); T1 with pair of sublateral spots on anterior and posterior face; T2–T6 with five spots: two large, prominent apico-sublateral spots, small apicolateral spots that are reduced or absent on apical terga, and small medial spot that is often reduced on basal terga; T2 fovea black; pygidial plate transparent yellow.
Structure and vestiture. Head oval, broader than long (Fig. 8 G); face, except for clypeus and lower supraclypeal area covered by dense recumbent white pubescence; eyes strongly converging ventrally; mandible simple, extending to far side of labrum in repose; labrum quadrate, 1.5X broader than long; disc of clypeus broader than high, convex, apically protruding less than 1 OD from face; lateral extension reaching base of mandible; head with moderately dense pubescence ventrally; mesosoma strongly tessellate, impunctate, slightly shiny; pronotal collar slightly impressed, humeral angle weak; mesepisternum and scutum mostly covered by combination of recumbent and erect white pubescence; hind tibia with sparse, short, slightly thickened hairs; forewing with second submarginal cell nearly triangular; metasoma narrower or equal in width to mesosoma, narrowly oval, slightly wide basally, tapering apically, widest at T3 (Fig. 6 G); terga tessellate and impunctate; T2 fovea narrowly oval, 1/3 length of T2; pygidial plate very broadly triangular, apex obtuse, slightly blunted (Fig. 23 T); hairs of prepygidial fimbria slightly thickened, sparse.
Terminalia. S8 (Fig. 57 G) transparent; spiculum very short, bifurcate; lateral apodemes not prominent; apical portion slightly convex; quadrate, sides converging medially before expanding at apex; apex broadly and shallowly emarginate; short hairs ventrally; cuticle not noticeably thinned. Genital capsule as in Figs. 60 I–J. Gonostyli separated dorsally by very narrow V-shape; dorsal lobe reduced, short and squat; ventral lobe diverging slightly with hairs on outer margin; volsella relatively long, extending nearly to level of penis valve; cuspis long, narrow, with pair of subapical spicules, digitus short and broad with single spicule apically; penis valve long, narrow, curving ventrally, bent sharply laterally at apex; endophallus extending slightly beyond penis valve, slightly sclerotized basally.
Floral records. Boraginaceae (28 ♂ 19 ♀): Tiquilia palmeri 1 ♀, T. plicata 28 ♂ 17 ♀, T. sp. 1 ♀, Polygonaceae (9 ♂ 6 ♀): Eriogonum deserticola 9 ♂ 6 ♀.
Phenology. Active from May to October.
Distribution. Sonoran Desert (Fig. 51 B), USA and likely Mexico. Prefers dune habitats.
Type material examined. Holotype data: ♀, CALIFORNIA: Riverside Co.: Mecca, 25 August 1956, M. Wasbaueri, on Coldenia plicata [= Tiquilia plicata] (CAS type no. 14753). Allotype data: ♂, same data as holotype, except: 20 August 1956 (UCRC). Paratype data: 2 ♂ 3 ♀, same data as holotype (1 ♂ 2 ♀ UCRC, 1 ♂ 1 ♀ BBSL); 1 ♂ 1 ♀, same data as holotype, except 20 August 1956 (1 ♂ BBSL, 1 ♀ UCRC).
Additional material examined. Total specimens: 34 ♂ 24 ♀. CALIFORNIA: Imperial Co.: 2 mi W Glamis, Algodones Dunes (32.99388 -115.10388): 4 ♂ 6 ♀, 25 Jul 1960, R.C. Dickson, Tiquilia plicata; 3.5 miles NW Glamis, Kipf Road, Algodones Dunes (33.02777 -115.11944): 1 ♂, 23 Jun 2001, D.C. Hawks; 5.7 mi W Glamis (32.97888 -115.16416): 3 ♂, 25 Jul 1960, R.C. Dickson, Eriogonum deserticola; Algodones Dunes; Glamis, 2 km W (32.99491 -115.0885): 8 ♂ 1 ♀, 7 Sep 2012, Z.M. Portman, T. plicata; E Brawley, 5 mi W Coachella Canal (32.70805 -115.02777): 4 ♂ 1 ♀, 13 Jun 1960, R.C. Dickson, E. deserticola; 2 ♂ 5 ♀, 11 Jul 1960, R.C. Dickson, E. deserticola; Glamis Dunes, 1 mi W Glamis (32.9941 -115.1013): 1 ♀, 9 Oct 1988, T.L. Griswold; Glamis, 6.4 km W; Osborne Overlook, N; sand dunes (32.98784 -115.13862): 1 ♂, 6 May 2012, Z.M. Portman, T. plicata; Salton City, 16.6 km SEbyS (33.17593 -115.85359): 1 ♀, 3 May 2012, Z.M. Portman, T. palmeri; Yuma, 32 km W; sand dunes (32.73256 -114.89861): 5 ♂ 1 ♀, 26 Sep 2013, Z.M. Portman, T. plicata; Riverside Co.: Mecca (33.572 -116.0734): 1 ♂ 1 ♀, 20 Aug 1956, M. Wasbauer, T. plicata; 1 ♂, 20 Aug 1956, M.S. Wasbauer, T. plicata; 2 ♂ 3 ♀, 25 Aug 1956, M. Wasbauer, T. plicata; San Bernardino Co.: Hwy 62, E Twentynine Palms, 1.5 mi W jct Iron Age Road (34.11388 -115.71027): 1 ♀, 21 Sep 2003, D. Yanega, T. sp.; 1 ♀, 21 Sep 2003, G.R. Ballmer; Rice, 7.4 mi W (34.1033 -114.9731): 1 ♀, 14 May 2013, G.E. Ballmer; Twentynine Palms, 37.5 km E(34.1042 -115.65593): 1 ♂ 1 ♀, 6 Sep 2012, T.L. Griswold, T. plicata; 4 ♂ 3 ♀, 6 Sep 2012, Z.M. Portman, T. plicata; Twentynine Palms, 45 km E (34.08767 -115.58219): 1 ♂ 1 ♀, 6 Sep 2012, Z.M. Portman, T. plicata.
Remarks. Perdita wasbaueri is unique in being one of the more minute Heteroperdita, though one female specimen is almost 4 mm long. It also holds the distinction of being the most extensively yellow-colored Heteroperdita. Wing veins are the most reduced in the subgenus; the female is the only one of similar-colored species that has the second medial cell absent, suggesting that this reduction may have arisen independently in this species. The wing is further reduced in the second submarginal cell, which is practically triangular in some specimens.
description: Published as part of Portman, Zachary M., Neff, John L. & Griswold, Terry, 2016, Taxonomic revision of Perdita subgenus Heteroperdita Timberlake (Hymenoptera: Andrenidae), with descriptions of two ant-like males, pp. 1-97 in Zootaxa 4214 (1) on pages 86-88, DOI: 10.11646/zootaxa.4214.1.1, http://zenodo.org/record/253086