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Andrena cryptanthae Timberlake, 1951
Life   Insecta   Hymenoptera   Apoidea   Andrenidae   Andrena
Subgenus: Scoliandrena

Andrena cryptanthae, female, face
Deana Crumbling · 9
Andrena cryptanthae, female, face

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Andrena cryptanthae, female, side
Deana Crumbling · 9
Andrena cryptanthae, female, side
Andrena cryptanthae, female, top
Smithsonian Institution, Entomology Department · 9
Andrena cryptanthae, female, top

Andrena cryptanthae, female, face
Smithsonian Institution, Entomology Department · 9
Andrena cryptanthae, female, face
Andrena cryptanthae, female, side
Smithsonian Institution, Entomology Department · 9
Andrena cryptanthae, female, side

Andrena cryptanthae, female, top
Smithsonian Institution, Entomology Department · 9
Andrena cryptanthae, female, top
Andrena cryptanthae, side
Smithsonian Institution, Entomology Department · 1
Andrena cryptanthae, side

Andrena cryptanthae, top
Smithsonian Institution, Entomology Department · 1
Andrena cryptanthae, top
Overview
Reprinted with permission of the American Entomological Society from: LaBerge, W. E. 1987. A revision of the bees of the genus Andrena of the Western Hemisphere. Part XII. Subgenera Leucandrena, Ptilandrena, Scoliandrena and Melandrena. Transactions of the American Entomological Society 112: 191-248.

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This species from California and Baja California del Norte is like Andrena osmioides in most respects but can be distinguished in either sex by the black, nonmetallic integument of the metasoma. In addition, the mesoscutal punctures and tergal punctures are more distinct in both sexes of cryptanthae.

FEMALE. MEASUREMENTS AND RATIOS. N = 20; length, 10-12 mm; width, 3-4 mm; wing length, M = 3.61 0.094 mm; FL/FW, M = 0.91 0.005; FOVL/FOVW, M = 3.39 0.038.

STRUCTURE. Antennal scape length longer than first three flagellar segments by one-fourth of fourth segment; flagellar segment 1 about as long as next two and one-half segments; segment 2 quadrate or broader than long; segments 3-10 longer than broad. Eyes each about three and one-third times as long as broad, inner margins parallel. Mandibles, galea and malar space as in osmioides. Maxillary palpus short as in osmioides, segmental ratio about as 1.0:1.0:0.8:0.5:0.8. Labial palpus extremely short, segmental ratio about as 1.0:0.4:0.4:0.6. Prementum, stipes, and glossa as in osmioides. Labral process extremely large as in osmioides, but tip usually blunt and occasionally weakly emarginate; labrum below process as in osmioides. Clypeus with punctures small, crowded, separated by about half a puncture width, surface moderately dulled by shagreening. Supraclypeal area, face above antennal fossae, facial foveae and genal area as in osmioides. Vertex as in osmioides but above lateral ocellus as tall as one ocellar diameter or taller.

Pronotum as in osmioides. Mesoscutum with small crowded punctures separated by ridges (essentially contiguous), dulled by fine shagreening. Scutellum similar but summit with punctures sparser. Propodeum with dorsal enclosure opaque, tessellate, granular basally; outside of enclosure opaque, coarsely tessellate with small shallow punctures separated by two or more puncture widths. Mesepisternum tessellate, opaque.

Metasomal terga 1-4 with basal areas with small punctures separated by half to one puncture width, surfaces finely reticularly shagreened; apical areas impunctate, surfaces coarsely reticularly shagreened except in narrow marginal area. Pygidial plate and sterna 2-5 as in osmioides.

VESTITURE. Color as in the palest specimens of osmioides; hind tibial scopal hairs never dark. Pollen-collecting hairs as in subgeneric description; terga without fasciae.

MALE. MEASUREMENTS AND RATIOS. N = 20; length, 8-11 nun; width, 1.5-2.5 mm; wing length, M = 3.30 0.095 mm; FL/FW, M = 0.89 0.006; FS1/FS2, M = 1.99 0.024.

INTEGUMENTAL COLOR. As in osmioides but tergal 1-5 black with rufescent reflections basally, not metallic.

STRUCTURE. Antennae as in osmioides but scape slightly longer than first two flagellar segments. Eyes each almost three times as long as broad, inner margins diverging towards vertex. Mandibles, malar space and galea as in osmioides. Maxillary palpal segmental ratio and labial palpal ratio as in female, otherwise palpi as in osmioides. Prementum, stipes and flossa as in osmioides. Labral process large, trapezoidal, usually longer than broad at base, apex weakly emarginate, shiny; labrum below process rounded or bluntly pointed medially, without cristae. Clypeus, supraclypeal area, face above antennal fossae and genal area as in osmioides. Vertex as in osmioides but above lateral ocellus as tall as one ocellar diameter or taller.

Thoracic form and sculpturing as in female except mesoscutal punctures usually separated by half to one puncture width and propodeal dorsal enclosure often without granular roughening mediobasally.

Metasomal terga 1-5 sculptured as in female terga 1-4 but basal area punctures sparser, separated by one to two puncture widths or more and surfaces often moderately shiny. Sterna as in osmioides. Terminalia as in Figs. 51-55. Penis valves short, thick; dorsal lobe gonocoxite long, inner margin irregular. Sternum 7 deeply emarginate apically. Sternum 8 with apex entire or weakly emarginate.

VESTITURE. White to pale ochraceous. Terga 1-5 without apical fasciae; sterna 2-5 without subapical fimbriae.

Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Boraginaceae  Cryptantha barbigera @ UCRC_ENT (1)

Cryptantha intermedia @ UCRC_ENT (107)
_  Withheld @ BBSL (2)

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Updated: 2021-05-08 14:31:19 gmt
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