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| Links | Only one female of this species has been seen and scored.
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© Copyright Laurence Packer 2014
· 7
Colletes impunctatus MALE mm x f |
Barcode of Life Data Systems · 1
Colletes impunctatus, Barcode of Life Data Systems |
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Mitchell, Bees of the Eastern United States, Vol. I, 1960 · 1
Colletes impunctatus lacustris, figure7f |
Mitchell, Bees of the Eastern United States, Vol. I, 1960 · 1
Colletes impunctatus lacustris, figure9r |
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Overview |
Reprinted with permission from: Mitchell, T.B. 1960 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 141.
FEMALE—Length 9-10 mm.; eyes only very slightly convergent below; length of malar space nearly equal to its breadth; facial foveae reduced, narrow, barely evident; antennae dull ferruginous beneath, median segments nearly as broad as long; clypeus produced much below suborbital line, very slightly depressed medially, finely, striately and rather closely punctate, surface shining; supraclypeal area shining between scattered, deep and rather coarse punctures; face above antennae dull, closely and rather obscurely punctate; vertex more shining, minutely and closely punctate; cheeks above rather dull, minutely and closely punctate, punctures becoming more sparse and distinctly separated below; pubescence whitish below on head and thorax, becoming dull ochraceous above, with intermixed fuscous hairs on vertex, scutum and scutellum; lateral angles of pronotum acute but not spine-like; metapleural protuberance not carinate; tegulae fuscous; wings subhyaline, veins and stigma piceous to ferruginous; surface of thorax rather dull, punctures of scutum anteriorly close and deep, not very coarse, becoming more coarse, deep and sparse posteriorly, those on scutellum quite coarse, close posteriorly, but anterior margin impunctate; punctures of pleura fine and rather close, interspaces somewhat shining below; lateral faces of propodeum dull, tessellate, impunctate, dorsal face very short, very finely and closely striate, thus lacking the usual quadrate shining spaces; legs dark, spurs yellowish, anterior coxae not spined, length of hind basitarsi about four times the breadth; abdominal terga somewhat shining, punctures of basal segment very fine, well separated, those on the following segments successively more close and minute, becoming indistinct apically; apical margins of terga depressed toward sides, reddish-hyaline on the more apical segments, with rather narrow, dense, white fasciae, widely interrupted on basal segments; discal pubescence of abdominal terga erect, thin and rather long, pale on basal segments, becoming obscurely darker on apical segments.
MALE—Length 7 mm.; eyes only very slightly convergent below; length and breadth of malar space subequal; antennae dull ferruginous beneath, length of median segments about one and a third times the breadth; apical portion of clypeus shining, minutely and quite sparsely punctate, punctures becoming close above under the long dense pubescence; face above antennae dull, obscurely rugosopunctate; vertex only slightly more shining, minutely and closely punctate; pubescence whitish below on head and thorax, becoming dull ochraceous above, with intermixed fuscous hairs on vertex, scutum and scutellum; lateral angles of pronotum acute but not spine-like; metapleural protuberance not carinate; tegulae fuscous; wings subhyaline, veins and stigma piceous to ferruginous; punctures of scutum rather close and fine, but distinctly separated anteriorly, becoming deeper, more distinct and sparse posteriorly, surface shining; punctures of scutellum more coarse, close and deep, but anterior margin impunctate, shining; punctures of pleura rather fine, close and deep, surface shining; lateral faces of propodeum dull, tessellate, subrugose, without distinct punctures, dorsal face short, finely and closely striate, thus lacking the usual quadrate shining spaces; legs dark, spurs yellowish, length of hind basitarsi about four times the breadth; abdominal terga somewhat shining, punctures of basal segment deep, distinct and rather sparse, but fine, those on 2nd segment somewhat finer and closer, becoming minute and obscure on the more apical segments; apical margins of terga slightly depressed, reddish-hyaline beneath the thin, narrow, white fasciae, interrupted medially on basal segment; discal pubescence of abdominal terga erect, thin and rather long, pale on basal segments, becoming obscurely darker on apical segments.
DISTRIBUTION—This boreal species barely reaches the United States, being corded only from Maine, New Hampshire, Michigan, Wisconsin and Minnesota. It extends across Canada from east to west and is recorded from the northern tier of western states. It is in flight during June and July.
FLOWER RECORDS—Brassica. It probably visits huckleberry blooms, according to Swenk, but definite records are lacking.
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Updated: 2024-04-25 23:39:18 gmt
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