Perdita hooki Portman & Neff, sp. n.
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 hooki

description: Perdita hooki Portman & Neff, sp. n.
Figs. 15 D, 16D, 17E, 18E, 23G, 24H, 35, 36B, 56G, 58M–N
Diagnosis. Both sexes of P. hooki have an amber metasoma (Figs. 15 D, 16D). The female can be recognized by the following combination of characters: head very broad (Fig. 18 E), T1 with a very faint white bar medially on the posterior face, and the second medial cell present (e.g. Fig. 4 A). The male can be distinguished by: head large and quadrate (Fig. 17 E), clypeus and transverse paraocular marks white or yellowish-white, mandibles bent and lacking a modified tip, and pygidial plate broadly truncate (Fig. 23 G).
Description of female. Length: 3.4 mm. Forewing length: 1.9 mm.
Coloration. Head (Fig. 18 E) and mesosoma base color black with bluish metallic luster; clypeus brown with medial white stripe which may be more or less reduced; supraclypeal mark brown; paraocular mark white, transverse, not reaching level of summit of clypeus; mandible amber, tip reddish; labrum brown; scape dark brown, more or less lightened on apex; antenna brown dorsally, tan ventrally; pronotal collar and pronotal lobe dark brown; legs dark brown except tan on anterior leg with joint of femur and tibia, anterior face of tibia, and all distal tarsi; wing veins dark brown; metasoma amber (Fig. 16 D), sometimes darkened to black on apical segments; T1 generally with obscure basomedial white bar; T2 fovea dark brown; pygidial plate brown.
Structure and vestiture. Head much broader than long (Fig. 18 E); lateral areas and circle around antennal socket covered in dense recumbent white pubescence, vertex with sparse erect pubescence; eyes parallel; facial fovea straight, parallel to eye, linear, extending from level of middle of antennal socket halfway to apex of eye; mandible simple; labrum quadrate, slightly less than 2X broader than long; disc of clypeus broader than high, convex, apically protruding 1 OD from face; lateral extension reaching 1/3 distance to 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 margins of scutum sparsely covered with combination of recumbent and erect white pubescence; fore coxa and venter of mesepisternum with abundant, broadly hooked hairs; apex of mid tibia with some short, thick, curved setae; forewing with second medial cell present; metasoma suboval, wide basally, tapering apically, widest at T3 (Fig. 16 CD; terga tessellate and impunctate, dullish on discs; T2 fovea short, linear, slightly thickened, 1/3 length of T2; pygidial plate triangular, apex bluntly pointed (Fig. 24 G); hairs of prepygidial fimbria thickened, dense.
Description of male. Length: 2.8 mm. Forewing length: 1.8 mm.
Coloration. Head (Fig. 17 E) and mesosoma base color black with bluish or greenish metallic luster; clypeus white, sometimes with pair of vertical sublateral brown stripes; supraclypeal mark white, transverse, often reduced or absent; paraocular mark white, transverse, reaching level of summit of clypeus; mandible tan or amber, tip reddish; labrum tan or amber; scape dark brown, lightened on apical tip; antenna light brown dorsally, tan ventrally; pronotal collar brown laterally; pronotal lobe brown, slightly lightened to tan dorsally; legs dark brown except tan on anterior fore tibia, joints of tibiae and femora, and distal tarsi; wing veins dark brown; metasoma uniformly amber (Fig. 15 D); T2 fovea dark brown; pygidial plate amber or brown.
Structure and vestiture. Head quadrate, much broader than long (Fig. 17 E); face with appressed white pubescence encircling antennal base; eyes parallel; mandible simple, strongly bent medially, bend approaching 90 degree angle (Fig. 17 E), mandible length extending to far side of labrum in repose; labrum quadrate, 1.5X broader than long; disc of clypeus broader than high, slightly convex, apically protruding less than 1 OD from face; lateral extension reaching 1/4 distance to base of mandible; head with fine, sparse, pubescence ventrally; mesosoma strongly tessellate, impunctate, slightly shiny; pronotal collar slightly impressed, humeral angle weak; mesepisternum and margins of scutum sparsely covered with combination of recumbent and erect white pubescence; hind tibia with sparse, very short thickened hairs; metasoma broader than mesosoma, oval, wide basally, tapering apically, widest at T2/T3 (Fig. 16 D); terga tessellate and impunctate; T2 fovea linear, slightly thickened, 1/3 length of T2; pygidial plate broadly triangular, apex very broadly truncate (Fig. 23 G); hairs of prepygidial fimbria sparse and slightly thickened laterally.
Terminalia. S8 (Fig. 56 G) with spiculum triangular, lateral apodemes prominent, flexed upwards; apical portion moderately convex, longer than broad, sides diverging slightly before converging at apex, apex strongly folded over at a right angle dorsally with slight carina at location of fold, folded-over area with prominent rounded medial emargination apically; sparse short hairs ventrally; circle of thinned cuticle medially. Genital capsule as in Figs. 58 M–N. Gonostyli separated dorsally by broad U-shape; lobes of gonostylus nearly equal in length, extending well below level of penis valve; dorsal lobe constricted basally, expanding apically into large, broad, rounded club, ventral lobe relatively narrow with few minute hairs on apex; volsella extending slightly beyond level of gonostylus; cuspis with multiple spicules on outer margin of apex; digitus short, narrow with single spicule apically; penis valve large and long, extending well beyond level of rest of genitalia, fused basally before splitting at level of gonostylus, apices sharply diverging and ending in relatively narrow point; endophallus with wavy internal structures, extending just beyond level of splitting of penis valve.
Floral records. Boraginaceae (11 ♂ 18 ♀): Tiquilia hispidissima 1 ♂ 1 ♀, T. mexicana 10 ♂ 17 ♀. Phenology. July to September. The limited phenology may be an artifact of the few collection events. Distribution. Chihuahuan Desert (Fig. 36 B), USA and Mexico.
Type material. Holotype data: ♀, TEXAS: Terrell Co.: Dryden, 8 mi SE (29.9732 -102.0173): 28 Aug 1974, G.E. Bohart, W.J. Hanson (BBSL, accession no. 141859). Paratype data: (14 ♂ 36 ♀) MEXICO: Coahuila: Cuatro-Cienegas Prot. Area; Site E 3; ~ 13 km SE Cuatrocienegas; gypsum flat with sinkholes (26.87167 - 102.01813): 1 ♂ 1 ♀, 22 Jul 2010, K. Wright, Tiquilia hispidissima (MSBA). San Luis Potosi: Matehuala, 67 mi S (23.0595 -100.632): 1 ♂, 30 Aug 1974, G.E. Bohart, W. Hanson. TEXAS: Terrell Co.: Dryden, 16 mi N (30.25 -102.017): 1 ♀, 9 Sep 2012, J.L. Neff, T. mexicana; Dryden, 17 mi E (29.9038 -101.8716): 2 ♀, 22 Aug 2008, J.L. Neff, T. mexicana; Dryden, 2 mi N (30.071 -102.104): 1 ♂ 1 ♀, 9 Sep 2012, J.L. Neff, T. mexicana; Dryden, 20 mi E (29.9016 -101.8378): 1 ♂, 22 Aug 2008, J.L. Neff, T. mexicana; Dryden, 24 mi E (29.9008 -101.7844): 5 ♂ 2 ♀, 15 Aug 2008, J.L. Neff, A. Hook, T. Mexicana (1 ♂ 1 ♀ at each of AMNH, TAMU; 1 ♂ at each of CAS, SEMC, USNM); 3 ♂ 7 ♀, 22 Aug 2008, J.L. Neff, T. mexicana (1 ♀ at each of CAS, SEMC, USNM; 3 ♂ 4 ♀ at CTMI); Dryden, 8 mi SE (29.9732 -102.0173): 2 ♂ 22 ♀, 28 Aug 1974, G.E. Bohart, W.J. Hanson (1 ♀ UCRC).
Additional material examined. Total specimens: 4 ♀. TEXAS: Terrell Co.: Dryden, 16 mi N (30.25 - 102.017): 1 ♀, 9 Sep 2012, J.L. Neff, Tiquilia mexicana; Dryden, 24 mi E (29.9008 -101.7844): 1 ♀, 15 Aug 2008, J.L. Neff, A. Hook, T. mexicana; 2 ♀, 22 Aug 2008, J.L. Neff, T. mexicana.
Etymology. The species is named for Dr. Allan Hook, an avid student of aculeate Hymenoptera, who has collected many interesting species of Texas bees, including part of the type series of this species. Remarks. Perdita hooki is the southernmost occurring Heteroperdita, with a single male collected in San Luis Potosi.
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 50-53, DOI: 10.11646/zootaxa.4214.1.1, http://zenodo.org/record/253086