The following is a reprint from
Parasitic Bees of the Genus Holcopasites Ashmead (Hymenoptera: Apoidea) by paul D. Hurd, Jr. and E. Gorton Linsley from Smitsonian Contributions to Zoology 1972 # 114
SERIAL PUBLICATIONS OF THE SMITHSONIAN INSTITUTION
by: Cockerell and Hicks
GEOGRAPHIC RANGE.—Central United States (Colo¬rado, Kansas, Nebraska, and Iowa).
HOST.—Unknown.
FEMALE.—Head and thorax black, metasoma red, rarely with terga stained or darkened medially; an¬tennae, mandibles, tegulae, and legs dark mahogany red; calcaria pale yellowish red. Vestiture of body chiefly white, mostly closely appressed and forming patches on face about antennal insertions, mesonotal line, dorsolateral angles of pronotum, mesoscutum circumferentially, mesepisterna, scutellum, mctano¬tum and propodeum at sides, legs basally and on meta¬soma, legs basally and on metasoma, especially on terga; dorsal surfaces of head, thorax, and metasoma without golden or reddish golden pubescence inter¬mixed. Wings feebly violaceous, lightly brownish apically. Length 6—8 mm. Eyes bare or with a few, well-scattered short hairs; face above antennae closely and coarsely punctate, neither bigibbosely swollen nor largely impunctate; antennae with first flagellar seg¬ment much shorter than combined length of succeeding two segments; anterior and lateral ocelli separated by less than twice their diameters; interocellar dis¬tance shorter than oceliorbital distance; rear angle of mandible situated well behind middle of eye; labrum longitudinally carinate medially, without a thornlike tubercle near base, very densely punctate on basal half or more and without impunctate shining areas basally; ventral surface of head, moderately closely and coarsely punctate adjacent to hypostomal carinae, interspaces polished and shining. Mesoscutum rather coarsely and nearly rugosopunctate throughout; scu-tellum longitudinally cleft medially nearly to base, rather prominently bilobed and moderately elevated posteriorly; metanotum produced posteriorly into prominent posteriorly projected shelflike processes; mesepistcrnum rather coarsely and nearly rugosely punctate throughout and with an evanescent patch of white pubescence best expressed along anterior face of mesepisternum; wing with second submarginal cell not unusually small, more than one-half as long as first submarginal cell when measured along posterior side; spur of middle leg fully one-half as long as cor¬responding basitarsus. Metasomal terga II and III basally with a transverse band of white pubescence (sometimes quasitriangularly lengthened medially) on either side of middle; fourth metasomal tergum bas¬ally with a quasitriangular patch of white pubescence on either side of middle; apical margin of tergum IV with a short band or spot of white pubescence later¬ally; pygidial plate obtusely rounded apically; fifth metasomal sternum with apical margin broadly and angularly emarginate.
MALE.—Similar to female in coloration of integu¬ment and vestiture. Length 6-8 mm. Eyes essentially bare; face as in female; antennae with first flagellar segment appreciably shorter than combined length of succeeding two segments; ocelli and rear angle of mandible situated as in female; labrum essentially as in female; ventral surface of head somewhat less densely punctate than female, interspaces greater in extent adjacent to hypostomal carinae. Mesoscutum, scutel-lum, metanotum, mesepisternum, and wings as in female; tegulae impunctate and shining laterally. Metasomal terga II—IV basally with a transverse band of white pubescence (usually quasitriangularly length¬ened medially) on either side of middle; metasomal terga V and VI with a somewhat triangular spot of white pubescence on either side of middle; apical mar¬gin of terga IV and V with only a short band or spot of white pubescence laterally; basin of metasoma not sharply defined, punctured at least at sides; apical margin of sixth metasomal tergum irregularly and feebly bisinuate in outline, without a median trian¬gular projection; seventh metasomal tergum with lat¬eral margins, as seen from above, evenly rounded on either side of pygidial plate; pygidial plate scarcely longer than maximum basal width, nearly parallel sided, essentially liguliform in outline.
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