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Stelis nitida Cresson, 1878
Chelynia nitida (Cresson, 1878); Stelis (Chelynia) nitida Cresson, 1878

Life   Insecta   Hymenoptera   Apoidea   Megachilidae   Stelis
Subgenus: Stelis

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

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Stelis nitida, M, back, Catoctin Mt. Park ---.
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Stelis nitida, M, back, Catoctin Mt. Park ---.
Stelis nitida, M, face, Catoctin Mt. Park ---.
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Stelis nitida, M, face, Catoctin Mt. Park ---.

Stelis nitida, M, side, Catoctin Mt. Park ---.
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Stelis nitida, M, side, Catoctin Mt. Park ---.
Stelis nitida, F, Back, Michigan, Keweenaw County ---.
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Stelis nitida, F, Back, Michigan, Keweenaw County ---.

Stelis nitida, F, Side, Michigan, Keweenaw County ---.
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Stelis nitida, F, Side, Michigan, Keweenaw County ---.
Stelis nitida, F, Face, Michigan, Keweenaw County ---.
© Copyright source/photographer · 5
Stelis nitida, F, Face, Michigan, Keweenaw County ---.
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 11 mm.; head, thorax and legs entirely black, abdomen with median, transverse, uninterrupted yellow bands on terga 1-5; face slightly 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 slightly convex, apical margin nearly straight, but with a very shallow emarginate area on each side; mandibles 3-dentate, middle tooth slightly nearer inner angle than to apical tooth; cheeks much broader than eyes; prothoracic tubercle with a barely discernable carina; tegulae quite expansive, smooth and shining, with very sparse and minute punctures, these becoming somewhat closer toward anterior margin; wings subhyaline, veins piceous, recurrent veins entering 2nd submarginal cell well within the base and apex; tibiae with short, apical spines, front and mid pair with two spines, hind pair with one very short, triangular, spine-like projection; front spurs somewhat brownish, with hyaline margin toward base, mid and hind spurs more piceous; pubescence entirely pale, quite copious on head and thorax, somewhat thinner above, quite dense on face, cheeks below, pleura and venter of thorax, pale and very thin on the more basal abdominal terga, becoming more copious, long, erect and black toward the apex, tergum 6 quite densely covered with erect, black setae; punctures quite deep and distinct over most of head and thorax, close and coarse on cheeks, upper part of head, pleura and scutellum, very fine and densely crowded below antennae, quite sparse and irregular on shining scutum; terga 1-5 with very sparse and rather fine punctures across central portions of discs, these becoming more closely punctate toward base and apex, tergum 6 rather coarsely reticulate beneath the pubescence; abdominal sterna somewhat shining, punctures minute and rather well separated but not sparse, becoming more densely crowded toward apical segments; sternum 6 deeply emarginate apically, with an elongate, erect, robust, blackish spine protruding from mid point of this emargination.


MALE—Length 8-8.5 mm.; head, thorax and legs entirely black, abdominal terga 1-5 with median, transverse, yellow bands, those on the more basal terga very slightly interrupted medially, tergum 6 with a pair of small, subapical, yellow spots; face slightly longer than distance between eyes above; eyes very slightly convergent below; lateral ocelli very slightly nearer margin of vertex than to each other, more distant from eyes; clypeus rather fiat, apical margin with a very slight, median, emargination; mandibles 3-dentate, middle tooth slightly nearer inner angle than to apical tooth; labrum smooth and shining, with no perceptible basal protuberance; cheeks much broader than eyes; transverse carina of prothoracic tubercle very poorly developed; tegulae rather expansive, smooth and shining, with minute, sparse punctures; wings subhyaline, veins more brownish-testaceous, recurrent veins entering 2nd submarginal cell within base and apex; front and mid tibiae each with a pair of short, acute, apical spines, hind tibia angulate but not spinose at tip; front spurs more testaceous, mid and hind pair piceous; pubescence entirely pale, quite copious over head and thorax, being elongate even on dorsum of thorax, dense and obscuring the surface on face below antennae, very sparse and inconspicuous on abdominal terga, but becoming more copious and conspicuous on the more apical segments; punctures rather coarse and deep over most of head and thorax, close but distinct on cheeks, vertex and upper part of face, becoming minute and densely crowded on clypeus and face below, close on pleura and on scutum anteriorly, but becoming rather distinctly separated in center of scutum posteriorly and on scutellum; discs of abdominal terga very sparsely punctate across median area, punctures becoming more distinct basally and apically on each disc, rather fine toward the apical margin, well separated, becoming quite close but distinct on tergum 6, tergum 7 finely and very closely punctate; abdominal sterna 1-3 exposed, somewhat shining, punctures close and rather distinct laterally, but becoming quite sparse, minute and well separated or absent in the median area, sternum 3 with a median, apical, protuberant area which does not project beyond the apical margin; sterna 4-8 retracted, much modified, closely resembling those of foederalis, (fig. 13) genital armature much as in costalis.

DISTRIBUTION—Described from New York. Collected in North Carolina, in June.

FLOWER RECORD—Chrysanthemum.

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FamilyScientific name @ source (records)
Asteraceae  Hypochaeris sp @ BBSL__BBSLID (1)

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Updated: 2018-04-23 21:34:36 gmt
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