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
cotribution from Cockerell, Linsely, Michener and Craford
GEOGRAPHIC RANGE.—South-central United States (Oklahoma and Texas).
HOST.—Unknown.
FEMALE.—Head and thorax black, metasoma red or chiefly so, terga often stained or clouded with black medially; antennae, mandibles, tegulae, and legs ex¬tensively pale reddish or ferruginous in coloration; calcaria pale reddish brown. Vestiture of body chiefly white, mostly closely appressed and forming patches on face about and above antennal insertions, hind margins of head, mesonotal line, dorsolateral angles of pronotum, mesoscutum circumferentially, mescpi-sterna, scutellum at sides and behind, metanotum and propodeum at sides, legs basally and metasoma, espe¬cially on terga; dorsal surfaces of head, thorax, and metasoma sometimes with some intermixed golden or reddish golden pubescence. Wings perceptibly violace¬ous, faintly tinged with brownish apically. Length 5-8 mm. Eyes bare; face above antennae closely and coarsely punctate, neither bigibbosely swollen nor largely impunctate; antennae with first flagellar seg¬ment shorter than combined length of succeeding two segments; anterior and lateral ocelli separated by less than twice their diameters; interoccliar distance slightly less than occllorbital distance; rear angle of mandible situated well behind middle of eye; labrum with a median thornlike process near base, basal half or more densely and closely punctate and without impunctate and shiny areas; ventral surface of head moderately punctate adjacent to hypostomal carinac, interspaces shining. Mesoscutum rather coarsely and nearly rugosopunctate throughout; scutellum weakly cleft medially along longitudinal axis, feebly bilobed in outline, not strongly elevated posteriorly; metano¬tum produced posterolaterally into weakly developed, posteriorly projected shelliikc processes ;mesepisternum rugosopunctate throughout and with an evanescent and largely incomplete patch of white pubescence dorsally; wing with second submarginal cell not un¬usually small, more than one-half as long as first sub-marginal cell when measured along posterior side; spur of middle leg much shorter than one-half as long-as corresponding basitarsus. Metasomal tergum II basally with a transverse band of white pubescence (sometimes triangularly produced posteriorly) on either side of middle; metasomal terga III and IV basally with a quasitriangular patch of white pubes¬cence on either side of middle; apical margin of ter¬gum IV with only a short band or spot of white pubescence laterally; pygidial plate broadly and evenly rounded apically; fifth metasomal sternum with apical margin entire or only feebly incurved medially.
MALE.—Similar to female in coloration of integu¬ment and vestiture. Length 4—8 mm. Eyes bare or at most with a few, scattered, short hairs; face as in female; antennae with first flagellar segment much shorter than combined length of succeeding two seg¬ments; ocelli and rear angle of mandible situated as in female; interoccliar distance much shorter than ocellorbital distance; labrum essentially as in female; ventral surface of head more closely and coarsely punctate than in female, interspaces shorter and less conspicuously shining. Mesoscutum, scutellum, meta¬notum, mesepisternum and wings as in female; tegulae impunctate and shining laterally. Metasomal terga II-V basally with a transverse band (usually somewhat triangularly lengthened medially) of white pubescence on either side of middle; apical margin of tergum IV with only a short band or spot of white pubescence laterally; apical margin of tergum V with a complete, though narrow, band of white pubescence; basin of metasoma not sharply defined, coarsely punctured throughout; apical margin of sixth deeply bisinuate in outline, with a prominent, median triangular pro¬jection; seventh metasomal tergum with lateral mar¬gins, as seen from above, rather sharply right angled on either side of pygidial plate; pygidial plate much less than twice as long as maximum basal width, tri¬angular in outline.
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