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Stelis labiata (Provancher, 1888)
Chelynia labiata Provancher, 1888; Stelis (Microstelis) birkmanni Cockerell, 1909; Stelis (Chelynia) labiata (Provancher, 1888)

Life   Insecta   Hymenoptera   Apoidea   Megachilidae   Stelis
Subgenus: Stelis

Stelis labiata FEM mm x f
© Copyright Laurence Packer 2014 · 7
Stelis labiata FEM mm x f

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Stelis labiata MALE CFP
© Copyright Laurence Packer 2014 · 7
Stelis labiata MALE CFP
Stelis labiata, U, Back, NC, Moore County ---.. ZS PMax
© Copyright source/photographer · 5
Stelis labiata, U, Back, NC, Moore County ---.. ZS PMax

Stelis labiata, U, Face, NC, Moore County ---.. ZS PMax
© Copyright source/photographer · 5
Stelis labiata, U, Face, NC, Moore County ---.. ZS PMax
Stelis labiata, U, Side, NC, Moore County ---.. ZS PMax
© Copyright source/photographer · 5
Stelis labiata, U, Side, NC, Moore County ---.. ZS PMax

Stelis labiata, F, Back, NC, Moore County ---.. ZS PMax
© Copyright source/photographer · 5
Stelis labiata, F, Back, NC, Moore County ---.. ZS PMax
Stelis labiata, F, Face, NC, Moore County ---.. ZS PMax
© Copyright source/photographer · 5
Stelis labiata, F, Face, NC, Moore County ---.. ZS PMax

Stelis labiata, F, Side, NC, Moore County ---.. ZS PMax
© Copyright source/photographer · 5
Stelis labiata, F, Side, NC, Moore County ---.. ZS PMax
Stelis labiata, M, Face, NC, Moore County ---.. ZS PMax
© Copyright source/photographer · 5
Stelis labiata, M, Face, NC, Moore County ---.. ZS PMax

Stelis labiata, M, Side, NC, Moore County ---.. ZS PMax
© Copyright source/photographer · 5
Stelis labiata, M, Side, NC, Moore County ---.. ZS PMax
Stelis labiata, U, Back, NC, Moore County ---.. ZS PMax
© Copyright source/photographer · 5
Stelis labiata, U, Back, NC, Moore County ---.. ZS PMax

Stelis labiata, U, Face, NC, Moore County ---.. ZS PMax
© Copyright source/photographer · 5
Stelis labiata, U, Face, NC, Moore County ---.. ZS PMax
Stelis labiata, U, Side, NC, Moore County ---.. ZS PMax
© Copyright source/photographer · 5
Stelis labiata, U, Side, NC, Moore County ---.. ZS PMax
Overview
Reprinted with permission from: Mitchell, T.B. 1962 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 152.


FEMALE—Length 8 mm.; head, thorax and legs entirely black, abdomen black, with transverse, submedian, narrow, yellow maculations; face somewhat longer than distance between eyes above; eyes slightly convergent below; lateral ocelli subequally distant from margin of vertex and each other, somewhat more distant from eyes; clypeus only slightly convex, apical margin very slightly produced medially, having a pair of very low submedian angles delimiting a shallow, median emargination; mandibles 3-dentate, middle tooth subequally distant from apex and inner angle; labrum shining over most of median length, not at all protuberant toward base, apex more distinctly punctured, the punctures extending narrowly up each side toward base; cheeks considerably broader than eyes; transverse carina of prothoracic tubercle very low and barely evident; tegulae shining, with very minute and rather sparse punctures; wings lightly infuscated, veins piceous, 1st recurrent vein distant from base, but 2nd recurrent vein nearly interstitial with the 2nd transverse cubitus; front and mid tibiae with a pair of acute, apical angles but hardly spine-like, hind tibiae with a similar apical angle; pubescence over head and thorax entirely pale, quite short but copious over face, on cheeks, pleura and on propodeum laterally, very short and thin, almost inevident on abdominal terga, becoming more evident on the more apical terga, tergum 6 with rather numerous, erect, fuscous, seta-like hairs; punctures coarse, deep and distinct over head and thorax, becoming densely crowded on lower portion of face and clypeus, crowded elsewhere on head, coarse and crowded on pleura, more distinctly separated on scutum and scutellum; posterior face of propodeum shining above, without a distinct, transverse, dorsal, pitted area; abdominal terga shining, punctures coarse, close and deep, apical margins very narrowly impunctate but black, terga 1-4 with narrow, transverse, yellowish bands which are slightly interrupted medially, 5 with a pair of submedian, yellow spots which are slightly separated, 6 rather coarsely rugoso-punctate, nearly twice as broad basally as the median length, apical margin broadly triangular; abdominal sterna uniformly, closely and deeply punctate throughout, punctures coarse on the more basal sterna, becoming very fine and densely crowded toward apex, sternum 6 rather broadly rounded.

MALE—Length 8 mm.; head, thorax and legs entirely black, abdomen black, with narrow, transverse, submedian, cream-colored maculations; face somewhat longer than distance between eyes above; eyes slightly convergent below; lateral ocelli subequally distant from eyes and each other, considerably nearer margin of vertex; clypeus slightly convex, apical margin with a median, slightly produced area which is shallowly emarginate; mandibles 3-dentate, middle tooth equally distant from inner and apical teeth; labrum polished and impunctate medially and toward base, finely punctate at tip and along sides toward base; cheeks somewhat broader than eyes; transverse carina of prothoracic tuberdes low but distinct; tegulae shining, with fine, evenly distributed punctures, but these becoming close anteriorly; wings subhyaline, veins piceous to dull testaceous, 2nd recurrent vein joining 2nd submarginal cell near its apex; front and mid tibiae each with a pair of short and acute, apical spines, hind tibiae at most triangularly pointed apically; pubescence entirely pale, rather copious on head and thorax, obscuring surface over lower part of face, elongate on cheeks and over most of thorax, very short and barely evident on abdominal terga; punctures deep and distinct, coarse and quite close over most of head and thorax, finer and densely crowded on lower part of face, more coarse, and distinct on cheeks, vertex, pleura and dorsum of thorax; punctures distinctly but not widely separated on dark areas of abdominal terga, but maculated areas nearly impunctate, these quite narrow, submedian in position, very slightly interrupted medially on terga 1-5, terga 6 and 7 entirely black, coarsely, deeply and very closely punctate, punctures becoming crowded on 6 apically and on 7; abdominal sterna 1-3 exposed, coarsely and quite closely and uniformly punctate, but sternum 3 with a median, impunctate, impressed area which becomes somewhat elevated toward apical rim, these sterna with quite distinct, apical fringes of elongate, whitish hairs; sterna 4-8 retracted, modified as shown (fig. 13) lateral areas of 3-5 with a dense covering of pale ochraceous tomentum; genital armature much as in costali8 (fig. 13).

DISTRIBUTION—Wisconsin to Quebec, south to North Carolina, April to August.

FLOWER RECORDS—Ranunculus and Rubus.

4


Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Apiaceae  Zizia aurea @ AMNH_BEE (1)
Apocynaceae  Apocynum androsaemifolium @ AMNH_BEE (1)
Asteraceae  Erigeron philadelphicus @ AMNH_BEE (1)

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Updated: 2019-10-19 16:57:37 gmt
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