Andrena excellens Viereck, 1924
  Apoidea   Andrenidae   Andrena
Subgenus: Uncertain

IDnature guides
Reprinted with permission from: Viereck, H. L. 1924. Prodromus of Andrena, a genus of bees. Canadian Entomologist 56: 19-24, 28-32, 76-81, 237-244.

Related to A.(A.) harveyi Vier.

FEMALE. Length 10mm; body black, partly covered with reddish hairs; head covered with blackish hairs except for an admixture of ochreous hairs on the face, clypeus, and occiput, fovea filled with blackish hairs, face mostly shining, partly indistinctly reticulate, with distinct punctures that are mostly not more than three puncture widths apart, clypeus elevated above the apical margin, convex, sculptured along its edge like the face except that the punctures are larger and sparser, clypearea present and partly polished like the adjoining portions of the clypeus, clypeus thinly hairy, its sculpture not at all hidden by hairs, labrarea shallowly emarginate, labrum with an elevation between the labrarea and apical edge of labrum, antennae blackish throughout, mandibles typical, robust, palpi nearly typical; thorax covered above and nearly half way down on the pleura with abundance of reddish hairs, that are shorter on the dorsulum than the mostly black hairs on the lower half of the mesopleura, scutel hairy and sculptured much like the dorsulum, legs blackish except for sutures of the tarsi and claws which are more or less reddish, covered with ochreous hairs on the coxae, with ochreous and blackish hairs on the trochanters and femora, and with blackish hairs on the tibiae and tarsi except as follows, trochantric floccus almost whitish, scopa with its hairs of the lower third pale ochreous, of its upper two-thirds blackish; propodeum with its enclosure poorly defined, dullish and finely reticulated, rest of upper face of propodeum covered with fine reddish hair; abdomen with its tergum shining, first, second, third and fourth tergites with a translucent brownish boarder, pygidium truncate, nearly planate, with a polished border, the median embossed finely reticulated area leveled toward the end, fimbria blackish.

HOLOTYPE. Female, Vancouver, B.C., May 1, 1921 (F.W.I. Sladen) ; No. 663, in the Canadian National Collection, Ottawa.

Scientific source:

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