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Perdita lateralis Timberlake, 1962
Perdita (Perdita) lateralis daleae Timberlake, 1962, valid subspecies

Life   Insecta   Hymenoptera   Apoidea   Andrenidae   Perdita
Subgenus: Perdita


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Identification
Extracted from: Timberlake P.H., (1962). A Revisional Study of the Bees of the Genus Perdita F. Smith, with Special Reference to the Fauna of the Pacific Coast (Hymenoptera, Apoidea) Part V. University of California Publications in Entomology Editors, Volume 28, No. 1, pp. 1-124

Female.—Head and thorax dark green; clypeus, supraclypeal area, mesoscutum except anterior border, scutellum, and metanotum, black. Base of mandibles, and rather small lateral face marks reaching on orbits variably from level of summit of clypeus to level of lower margin on antennal sockets, pale yellow. Mandibles shading through rufotestaceous to dark red at apex. Labrum and thorax dark. Abdomen fuscous to blackish, more brownish beneath, pygidial plates rufotestaceous; on tergites 2 to 4 an enclosed pale-yellow or yellowish-white basal band more or less distinctly interrupted medially. Legs fuscous; anterior surface of front tibiae and tarsi pale brown, with a yellow streak more or less apparent on outer anterior edge of tibiae. Proboscis fuscous, more brownish apically. Antennae fuscous, scape entirely dark, flagellum pale brown beneath. Tegulae subhyaline, with a dark spot at base. Wings whitish hyaline, nervures pallid, stigma yellowish, subcosta pale brown except at base and apex.

Head barely longer than wide, with clypeus large and strongly projecting. Facial foveae distinctly wider than narrow interval between them and eyes and reaching from level of middle of antenna! sockets about two-thirds of distance to level of anterior ocellus. Proboscis of moderate length, not exceeding the fossa, with galeae and stipites of equal length. Mandibles rather stout, reaching far margin of fossa, and with a well-developed inner tooth. Pterostigma large, but not quite equaling width of submarginal cells; part of marginal cell beneath it about equal to part beyond. Pygidial plate plane, with convergent sides and rather narrowly rounded apex. Head and thorax tessellate and shining; frons more strongly tessellate and rather dullish; face below antennae, and mesonotum except anterior border of scutum, polished. Punctures on face and mesonotum fine, distinct, and moderately close, becoming sparse on clypeus and posterior part of disk of mesoscutum. Pubescence white: rather short, erect, and conspicuous on face and mesonotum; denser on cheeks and underparts of thorax. Length: 4r-5.5 mm.; anterior wing, 3.3-3.7 mm.

Male.—Head and thorax dark blue-green; mesonotum and metanotum black, except anterior border of mesoscutum. Mandibles except red tips, labrum, clypeus except usual pair of dots and a small blotch on each side of upper margin of disk, triangular lateral marks reaching level of foveae, supraclypeal mark notched above or sometimes divided, and sometimes a small more or less irregular spot on subantennal plates, yellow. Tubercles yellow. Abdomen fuscous; apical margin of tergites and apical segments brown; a nubilous, interrupted yellow band at base of tergites 1 to 2 or 3, more or less distinct. Legs fuscous; anterior side of front and middle femora and tibiae, and tarsi, yellow; underside of hind tibiae sometimes yellowish. Antennae fuscous above; scape yellow except for a dark apical spot; nagellum somewhat orange yellow beneath. Proboscis brown, becoming more fuscous at base. Tegulae and wings as in female, but subcosta (except at base) and margins of stigma, brown.

Head either small, with cheeks not much broadened and gradually narrowed anteriorly; or more or less enlarged (usually only moderately), with cheeks broad and obtusely angulate anteriorly; or rarely quadrate, with cheeks conically dentate anteriorly. Facial foveae small and about twice as long as wide. Mandibles tapering, acute, and reaching far margin of proboscidial fossa, or beyond fossa in macrocephalous specimens. Flanks of pronotum but little impressed except in macrocephalous specimens; anterior corners of disk rounded and not prominent. Sculpture and pubescence much as in female. Tergite 7 narrowed about three-fourths to rounded apex. Subgenital plate triangular, a little longer than wide; ventral surface convex but not carinate; disk with very fine setae on apical half. Dorsal lobes of caulis short and broad, with volsellae well exposed; parameral lobes appearing slender and slightly clavate in dorsal view, and broad and tapering as seen from side; sagittae thickly fusiform, with the rods more or less divergent at apex. Length: about 3.5-4.5 mm., anterior wing, 2.9-3.2 mm.

Perdita lateralis daleae n. subsp.

Extracted from: Timberlake P.H., (1962). A Revisional Study of the Bees of the Genus Perdita F. Smith, with Special Reference to the Fauna of the Pacific Coast (Hymenoptera, Apoidea) Part V. University of California Publications in Entomology Editors, Volume 28, No. 1, pp. 1-124.

P. daleae is evidently a form of lateralis, the female differing only in having the face entirely dark, or rarely with small, transverse lateral marks. So far, daleae has been found only in the mountains of Inyo County, California.

Female.—Head and thorax dark blue green; labrum, clypeus, supraclypeal area, mesoscutum except margins, scutellum, and metanotum, black. Face and thorax entirely dark except for occasional small lateral face marks. Abdomen black, with a pale-yellow interrupted basal band on tergites 2 to 4 not reaching lateral margins. Legs blackish; anterior side of front tibiae, and tarsi, brown. Antennae black, flagellum brown beneath. Mandibles yellowish at base, becoming rufotestaceous at middle, more or less shaded with fuscous coloration on margins, and red at apex. Proboscis blackish. Tegulae pale testaceous hyaline, becoming fuscous at base. Wings whitish hyaline; nervures pallid; stigma yellowish, especially on margins; subcosta tinged with brown.

Head slightly longer than wide; clypeus large, protruding, with broadly truncate apex. Facial foveae broader than narrow interval between them and eyes and reaching from level of middle of antennal sockets about two-thirds of distance to level of anterior ocellus. Mandibles stout, with a small inner tooth, and reaching far margin of proboscidial fossa. Proboscis of moderate length, barely exceeding the fossa; stipites and galeae equal in length. Pterostigma rather large, as in allied species; part of marginal cell beyond it somewhat longer than part beneath. Pygidial plate plane and rather narrowly rounded at apex. Head and thorax minutely tessellate, somewhat more strongly so on somewhat dullish frons; clypeus, supraclypeal area, disk of mesoscutum, and scutellum, polished. Puncturation fine, the punctures moderately close on anterior third of mesoscutum and sides of face, including sides of clypeus and supraclypeal area, and almost absent on middle of disk of mesoscutum. Pubescence whitish, rather short and erect on face and thorax, conforming to puncturation in distribution, longer on cheeks and underside of thorax. Length: about 4.5-5 mm.; anterior wing, 3.8-4 mm.

Male.—Similar to lateralis in color and markings. Clypeus usually fuscous across upper third or half of disk, but ranging to all yellow; supraclypeal area and subantennal plates often with four nearly equal yellow spots, but sometimes dark; lateral marks generally more quadrate or transverse, but face markings of both lateralis and daleae variable and in some cases in agreement. Thorax entirely dark. Abdomen colored as in lateralis, but yellow bands sometimes absent. Underside of hind tibiae more frequently yellow.

Macrocephalous more often than lateralis, with margin between outer surface of cheeks and undersurface of head more sharply angled and anterior process of cheeks larger and bluntly rounded. Flanks of pronotum in macrocephalous specimens deeply impressed, with posterior corners of disks rounded and prominent. Mandibles large, slender, and acute, each reaching nearly to base of other, and inner margin slightly expanded at middle and with a sharp edge. Sculpture and pubescence as in lateralis. Subgenital plate and genitalia similar, with former a little more broadly triangular and more arcuate on margin, and dorsal lobes of caulis more oblique and more rounded at apex. Length, 3.25-4 mm.; anterior wing, 3-3.4 mm.


Names
Scientific source:

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FamilyScientific name @ source (records)
Apocynaceae  Asclepias @ UCRC_ENT (9)
Brassicaceae  Stanleya pinnata @ BBSL (1)
Cleomaceae  Peritoma arborea @ UCRC_ENT (1)
Fabaceae  Astragalus @ UCRC_ENT (1)

Dalea or @ UCREM (1)

Prosopis juliflora @ UCRC_ENT (1)

Prosopis @ UCRC_ENT (3)

Psorothamnus arborescens @ UCRC_ENT (8)

Psorothamnus fremontii @ BBSL (3); UCRC_ENT (23)

Psorothamnus polydenius @ BBSL (1)

Psorothamnus sp @ BBSL (32)
Loasaceae  Eucnide urens @ BBSL (1)
Polygonaceae  Eriogonum fasciculatum @ UCRC_ENT (7)

Eriogonum inflatum @ UCRC_ENT (1)
Tamaricaceae  Tamarix gallica @ BBSL (1)
Zygophyllaceae  Larrea tridentata @ BBSL (155); UCREM (6); AMNH_BEE (1); UCRC_ENT (45)

Larrea @ AMNH_BEE (81)
_  Withheld @ BBSL (15)

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Updated: 2021-05-13 13:43:44 gmt
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