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Andrena fulminea LaBerge, 1967
Life   Insecta   Hymenoptera   Apoidea   Andrenidae   Andrena
Subgenus: Callandrena_sensu_lato


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Reprinted with permission of the University of Nebraska State Museum from:
LaBerge, W. E. 1967. A revision of the bees of the genus Andrena of the Western Hemisphere. Part I. Callandrena (Hymenoptera: Andrenidae). Bulletin of the University of Nebraska State Museum 7: 1-316.


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This brightly colored Mexican species is closely related to A. discreta Smith. The female of fulminea can be distinguished from that of discreta by the bidentate labral process, the dark scopal and femoral hairs, the less punctate terga, and the apical tubercle of the last sternum being flattened. The male of fulminea differs from that of discreta by the shorter vertex, the less distinctly punctate terga, and the terminalia is described below.

FEMALE. MEASUREMENTS AND RATIOS. — N = 2; length, about 13 nun; width, about 3.5 mm; wing length, 3.96-4.08 mm; FL/FW, 1.11-1.13; FOVL/FOVW, 2.66-2.94.

INTEGUMENTAL COLOR. — Black except as follows: mandible with apical half rufescent, flagellar segments 2-10 dark reddish-brown below; tegulae testaceous; wing membranes moderately infumate throughout, veins dark reddish-brown; terga 1-4 with apices broadly (nearly half of terga 2-4) hyaline, yellow; terga 2-4 with bases (below apical areas of proceeding terga) fulvous to red; sterna 2-5 broadly hyaline apically, yellow, basally reddish-brown; sternum 6 red; distitarsi, hind basitarsi, hind tibiae orange; middle basitarsi dark red; tibial spurs yellow.

STRUCTURE. — Antennal scape length equals first two and one-half flagellar segments; flagellar segment 1 equals succeeding two and one-half segments; segment 2 slightly shorter than 3; segment 3 as long as 4; segments 3-10 longer than broad. Eye slightly more than three and three-fourths times as long as broad, inner margins converging extremely slightly towards mandibles. Malar space, mandible and galea as in discreta. Maxillary palpus as in discreta but segmental ratio about 1.0:1.0:0.8:0.6:0.7:0.8. Labial palpus as in discreta but segmental ratio about 2.3:1.0:0.8:1.0. Labral process trapezoidal, about twice as broad at base as long, distinctly emarginate medially, flat. Clypeus as in discreta but impunctate or sparsely so medially, slightly gibbous subapically, dulled by reticular shagreening especially in posterior half. Supraclypeal area as in discreta. Genal area about as broad as eye in profile, with minute punctures separated by one to two puncture widths, surface dulled by fine tessellation except near eye. Vertex short, above lateral ocellus equals distinctly less than one ocellar diameter, with minute punctures crowded above eyes and ocelli, surface dulled by fine tessellation. Face above antennal fossae with relatively irregular longitudinal rugulae, interrugal spaces sparsely punctate, finely tessellate. Facial fovea long, shallow, extending below to about level of posterior clypeal margin, upper end separated from lateral ocellus by half an ocellar diameter or slightly less.

Thoracic sculpturing and structure as in discreta except as follows: propodeum with dorsal enclosure without rugulae, tessellation coarser than elsewhere; corbicular area moderately shiny, tessellation coarse, punctures restricted to anterodorsal fourth; mesepisternum with punctures small, sparse, obscure; pterostigma narrower than from inner margin prestigma to wing margin; middle basitarsus slightly broader medially than hind basitarsus (as 9:8), with evenly rounded sides. Claws and tibial spurs normal.

Metasomal tergum 1 impunctate, surface dulled by coarse reticular shagreening; terga 2-4 with basal area punctures minute, shallow, obscure, surfaces dulled by fine dense tessellation. Pygidial plate as in discreta. Sterna 2-5 as in discreta but surfaces dulled by coarse reticular shagreening. Sternum 6 with apical tubercle flattened into a small circular area barely raised above surrounding surface of sternum.

vestiture: Generally dark ochraceous to fulvous or fox-red except as follows: paler on lower sides of head and thorax, brighter above; facial foveal hairs and sparse long hairs of vertex and along eye margins dark brown; terga 2-4 with basal area hairs subdecumbent, ochraceous to pale brown, apical fasciae indistinct; terga 5 and 6 with reddish-brown hairs, paler at sides; sterna 2-5 with basal hairs reddish-brown, subapical fimbriae ochraceous; hind legs except tarsi with dark brown to black hairs; fore and middle legs with ochraceous hairs except outer surfaces tibiae and basitarsi dark brown; corbicular hairs as in discreta but internal hairs brown; scopal and floccular hairs as in discreta but dark brown to black. Male. measurements and ratios: N = 13; length, 10-12 mm; width, 2-3 mm; wing length, M = 3.87 ± 0.204 mm; FL/FW, M = 1.21 ± 0.009; FS1/FS2, M = 2.02 ± 0.016.

integumental color: Black except as follows: mandible with it least apical half rufescent; clypeus pale yellow except extremely narrow posterior margin, lateral angles, apical margin and spots below and mesad of tentorial pits; flagellar segments 2-11 dark brown below; tegulae clear red to dark reddish-brown; wing membranes moderately infumate throughout, veins reddish-brown; terga 1-5 with apical margins broadly hyaline, reddish-yellow, often red basad of hyaline margin (as much as two-thirds of tergum red occasionally); terga 2-6 with narrow bases (below hyaline preceding tergal margins) red; terga 6 and 7 and occasionally 5 entirely red; sterna entirely ferruginous or terga 3-5 dark medially; tarsi orange; hind tibiae usually entirely orange, or pale in part; middle tibiae often with apex reddened; tibial spurs reddish-yellow.

STRUCTURE. — Flagellum as in discreta but flagellar segment 1, usually as long as or slightly longer than segments 2 plus 3. Eye, malar space and galea as in female. Mandible as in female but lacking basal angle, lamella and subgenal coronet. Maxillary palpus as in female but segmental ratio about 1.3:1.0:1.0:1.0:0.9:1.0. Labial palpus as in female but ratio about 2.0:1.0:0.7:1.1. Labral process as in female. Clypeus as in female but punctures smaller and sparser and median impunctate area larger. Supraclypeal area and genal area as in female. Vertex as in female but less punctate especially above eyes. Face above antennal fossae as in female but longitudinal rugulae less distinct and more irregular.

Thoracic sculpturing and structure as in female except propodeal lateral surfaces duller, with punctures minute and scattered throughout. Metasomal tergum 1 with minute obscure sparse punctures basally, scarcely visible due to tessellation; terga 2-5 as in female but basal area punctures slightly more distinct although obscured by dense fine tessellation. Tergum 7 with pseudopygidial Hi obliterated by hairs. Sterna 2-6 as in discreta.

Genitalia and sterna 7 and 8 (Figs. 316-320) as in discreta but, note the following: penis valves almost straight, not much bent downwards; dorsal lobes of gonocoxites with apices turned sharply outwards; sternum 7 with apicolateral lobes greatly lengthened so that plate is almost X-shaped; sternum 8 with neck narrow, elongate, not expanded at tip, base elongated medially.

VESTITURE. — Generally as in female except as follows: vertex and along inner margins of eyes with long black hairs; basal tergal hairs longer, erect 01 suberect, fuscous; terga 6 and 7 with ochraceous to fuscous hairs; sterna 2-5 without subapical fimbriae, with ochraceous hairs; leg hairs entirely reddish yellow to ochraceous.

TYPE MATERIAL. — The holotype (PHT) female, allotype (PUT) male, one female paratype (INHS) and five male paratypes (PHT; INHS) were collected by I. . Condit on highway east of Morelia, Michoacan, Mexico, February 1, 1952. Ten additional paratypes (MSU; SECK; USNM; INHS; USD) from Mexico are as follows: Amecameca, Veracruz: 5 males, September 9-25, 1957, R. and Ka Dreisbach. Apizaco (6 miles W.N.W.), Tlaxcala: 1 male, on Heterotheca chrysopsidis, June 10, 1961, the University of Kansas Mexican; Expedition. Tlalpan, Mexico: 1 male, November, 1887. Morelia (21 miles £.), Michoacan 3 females, May 29, 1956, H. A. Scullen.

Names
Scientific source:

Supported by

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FamilyScientific name @ source (records)
Asteraceae  Senecio sylvaticus @ BBSL (2)

Tithonia sp @ BBSL (1)

Verbesina virgata @ BBSL (6)

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Updated: 2024-03-29 01:16:01 gmt
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