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© Copyright source/photographer
· 9
Dianthidium simile, -female, -back 2012-06-27-16.43.16 |
© Copyright source/photographer
· 9
Dianthidium simile, -female, -side 2012-06-27-17.03.28 |
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© Copyright source/photographer
· 7
Dianthidium simile, m, back, Caroline Co., VA |
© Copyright source/photographer
· 7
Dianthidium simile, m, face, Caroline Co., VA |
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© Copyright source/photographer
· 7
Dianthidium simile, m, left, Caroline Co., VA |
© Copyright Laurence Packer 2014
· 7
Dianthidium simile FEM CFP comp |
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© Copyright Laurence Packer 2014
· 7
Dianthidium simile MALE mm .x f |
© USDA Bee Biology and Systematics Laboratory, Logan Utah
· 1
Dianthidium simile, 211281, female, face t |
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© USDA Bee Biology and Systematics Laboratory, Logan Utah
· 1
Dianthidium simile, 211281, female, scutum t |
© Mary Paul
· 1
Dianthidium simile, male, top |
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© Mary Paul
· 1
Dianthidium simile, male, side |
© Mary Paul
· 1
Dianthidium simile, male, face |
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© Mary Paul
· 1
Dianthidium simile, female, top |
© Mary Paul
· 1
Dianthidium simile, female, side |
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Overview |
FEMALE—Length 8 mm.; black, with yellow maculations; clypeus black medially, with large yellow blotches on each side, these contiguous with lateral facial maculae which are broad below but very much narrowed above, terminating near top of eye; cheeks with a small yellow maculation above top of each eye; tubercles with a yellow spot; scutum with a small yellow maculation on anterior margin near tip of tubercle; tegulae ferruginous, with a rather large, yellow maculation; axillae largely yellow, and scutellum with a narrow, yellow border which is interrupted medially; pleura entirely black; basal abdominal tergum with a pair of lateral, yellow blotches and a narrow, median band, these widely separated; terga 2-5 with lateral, transverse maculae which are strongly emarginate on posterior border and widely separated medially; length of face subequal to distance between eyes; eyes subparallel; lateral ocelli subequally distant from eyes and margin of vertex; vertex and cheeks with a very low, carinate, posterior margin; cheeks slightly narrower than eyes, clypeus slightly convex, apical margin straight and entire; mandibles entirely black, 3-dentate, median tooth conspicuous and much nearer apical tooth than to inner angle; tegulae very finely and densely punctate; wings rather deeply infuscated, veins piceous; coxae and trochanters black, femora black except for small, apical, yellow maculations, front and mid tibiae largely yellow on outer face except at apex, and hind tibiae with a more restricted, basal, yellow maculation, tarsi and remainder of tibiae brownish-ferruginous; spurs yellowish to dull testaceous; hind coxa with a low, triangular, spine-like tubercles; pubescence entirely pale, very short and inconspicuous, to some degree more elongate and copious beneath wing bases on upper part of metapleura and propodeum; ventral scopa entirely pale ochraceous; punctures coarse, deep and distinct, close over entire head and thorax, being slightly separated only on vertex; punctures slightly separated on basal, abdominal tergum medially, becoming quite close at extreme sides, those on terga 2-5 somewhat separated medially, but becoming close laterally, apical margins narrowly impunctate, punctures of tergum 6 densely crowded.
MALE—Length 8-9 mm.; black, with yellow maculations; outer face of mandibles and entire clypeus yellow, lateral face marks yellow, more or less triangular, ending very narrowly toward upper end of eye; cheek with a very small, yellow spot back of eye at top of head; tubercles with a small yellow blotch, and tegulae with an anterior, yellow maculation; scutum with a pair of very small, anterior spots, axillae with small yellow spots and scutellum very narrowly rimmed with yellow on each side; otherwise thorax entirely black; basal abdominal tergum with a pair of short, lateral maculations and a median, more elongate but conspicuous spot; terga 2-5 with lateral, transverse, elongate maculations which are broadly emarginate posteriorly, and nearly meet medially, tergum 7 largely yellow, with only the narrow base black; face somewhat longer than distance between eyes above; eyes subparallel; lateral ocelli subequally distant from eyes and margin of vertex; vertex and cheeks with a sharp but rather low, carinate, posterior rim; clypeus broadly convex, apical m a r g i n straight; mandibles obscurely 3-dentate, with a very low and inconspicuous middle tooth; tegulae very finely and densely punctate; wings rather deeply infuscated, veins piceous; coxae, trochanters and femora black, but mid and hind femora, with small, yellow marks apically; outer face of front and mid tibiae yellow, and hind border, base and apex of hind tibiae yellow, otherwise black; fore and hind basitarsi yellow, the mid tarsi and the more apical tarsal segments of the others, more brownish; all spurs, and apical, robust spines of hind coxae, bright yellow; pubescence very short and inconspicuous, entirely pale, somewhat more dense beneath wing bases on upper part of metapleura and propodeum; punctures coarse, deep and distinct, close over entire head and thorax; punctures well separated medially on abdominal terga 2-4, somewhat closer on 1 and 5, dense on 6 and quite close on all; tergum 7 broadly truncate, with a median, triangular protuberance which is slightly separated from lateral areas by shallow emarginations; basal sterna dark, sternum 3 with a median, apical, dense brush of moderately elongate pubescence, and sternum 5 with a fringe of quite elongate pubescence, 6 largely exposed, thinly pubescent, 7 and 8 retracted; genital armature as shown (fig. 5).
DISTRIBUTION—Minnesota to Ontario and Maine, south to Georgia, July to September.
FLOWER RECORD—Aster.
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Updated: 2024-04-23 14:14:07 gmt
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