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Perdita krombeini Timberlake, 1960
Life   Insecta   Hymenoptera   Apoidea   Andrenidae   Perdita
Subgenus: Perdita


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Overview
Reprinted with permission from: Mitchell, T.B. 1960 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 141.

MALE—Head and thorax dark blue green, the thorax entirely dark. Mandibles except reddish apical third, labrum, clypeus, supraclypeal and lateral marks yellow; usual pair of dark dots on clypeus distinct; lateral marks varying from subtriangular, and hardly reaching above summit of clypeus, to subquadrate and nearly reaching level of antennae. Abdomen black, the two apical segments testaceous or rufotestaceous. Legs black, the anterior side of front tibiae and of front femora at apex yellow; tarsi brown, the anterior pair more yellowish. Antennae blackish, the scape yellow beneath, the pedicel entirely dark, and the flagellum broadly brown beneath. Tegulae dark testaceous, becoming fuscous at base. Wings strongly dusky, the nervures fuscous, the stigma with a slender, central, paler streak.

Head not enlarged, somewhat broader than long, the cheeks unarmed and about as wide as the eyes. Mandibles short, tapering and acute. Proboscis rather short, not exceeding the proboscidial cavity, the maxillary palpi six-jointed and as long as the galeae. Antennae ordinary, except the flagellum more strongly clavate than usual, with the joints much broader than long. Wings with a rather narrow stigma which is shorter than the first submarginal cell and about one-half as wide; part of marginal cell beneath the stigma somewhat shorter than the part beyond; second submarginal cell narrowed about one-half to radius; nervures closing apical side of second discoidal cell distinct, although finer than other nervures. Abdomen elongate oval, strongly convex above, the apical tergite narrowly truncate at apex. Subgenital plate quadrate, somewhat less than twice as long as wide, a little narrowed toward apex, which is truncated, with rounded corners; ventral surface of plate convex except rather broadly on lateral margins, and with very fine, short pile on apical part of the convexity. Caulis of aedeagus quadrate, somewhat longer than wide, the two dorsal lobes broadly rounded at apex and separated by a rather narrow but not deep emargination; parameral lobes inserted low on sides of caulis, appearing slender in dorsal view, and moderately narrow and acute at apex in lateral view; fused body of sagittae fusiform, abruptly narrowed apically and ending in two slightly separated sharp points, the thick part somewhat ovally swollen; volsellae well exserted from caulis, the superior pair only a shorter than the inferior pair.

Head and thorax tessellate and dullish, the face impunctate, the mesonotum with minute sparse punctures. Pubescence moderately long and sparse, fine, erect and whitish. Length, 4 mm.; anterior wing, 3 mm.

TYPES: Holotype: Male, on sand fiats, Olga, Lee County, Florida, March 30, 1954 (K. V. Krombein) [U. S. National Museum]. Paratype: 1 &, topotypical [U.S. N.M.]. This species is not particularly close to any other known to me, but by the genitalia it is more or less related to P. sphaeralceae, P. Galloleuca, P. tarda and P. sidac, which occur in the southwest and were described by Cockerell.


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Updated: 2024-03-29 06:32:38 gmt
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