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Stelis grossa (Mitchell, 1962)
Heterostelis grossa Mitchell, 1962; Stelis (Protostelis) grossa (Mitchell, 1962)

Life   Insecta   Hymenoptera   Apoidea   Megachilidae   Stelis
Subgenus: Heterostelis


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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 13 mm.; black, with yellow maculations; lateral facial maculations ending broadly and abruptly near top of eye, adjacent margin of clypeus, a small transverse spot at each extreme side of vertex, tubercles, axillae, small subtriangular lateral spots on scutellum, lateral margin of scutum extending rather broadly onto anterior margin, and broad, lateral, transverse maculations on abdominal terga 1-5 which are rather widely separated medially, yellow; face somewhat longer than distance between eyes above; eyes slightly convergent below; ocelli very small, not much larger than the more coarse punctures, lateral pair subequally distant from eyes and margin of vertex, slightly nearer each other; clypeus very slightly convex, apical margin about straight, with a dense apical fringe of elongate yellowish hairs; mandibles largely ferruginous, teeth more piceous, 8- dentate, middle tooth subequally distant from apical and inner teeth; cheeks somewhat narrower than eyes; tegulae testaceous, coarsely, deeply and closely punctate; wings quite uniformly infuscated, veins more piceous; 2nd recurrent vein terminating beyond tip of 2nd submarginal cell; coxae and trochanters piceous in general, femora more reddish-testaceous, tibiae and tarsi becoming yellowish; spurs testaceous; pubescence very short and thin, entirely pale, hardly evident dorsally, with very short but rather dense tufts beneath posterior wing bases; punctures in general coarse, deep and distinct, rather sparse across vertex and on lateral portions of upper part of face, becoming close just below and around ocelli, clypeus with a rather indefinite, median line, punctures close on each side; punctures coarse, close, deep and quite uniform over scutum, somewhat coarser but close on scutellum, coarse and distinct but quite close on pleura; puncturation of abdomen much finer, rather coarse on basal terguni medially, but becoming fine toward apical margin and fine, on terga 2-4 medially where they are well separated, becoming coarser and quite close laterally and on tergum 5, apical margins narrowly impunctate and somewhat shining, entirely dark; tergum 6 coarsely rugoso-punctate, apical margin obtusely angulate on each side, the margin finely crenulate, median area slightly produced; abdominal sterna smooth and shining, the more basal segments ferruginous, with fine, well separated and irregular punctures, these becoming more coarse, deep, distinct and close on the more apical segments, sternum 6 almost rugose, apical margins of these sternal plates narrowly yellowish-hyaline. TYPE S—Holotype: Female, Gainesville,

Identification
Rare bee, closely related to Stelis australis.

Names
Scientific source:

Geographic distribution
Currently known only from Florida.

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FamilyScientific name @ source (records)
Asteraceae  Balduina angustifolia @ AMNH_BEE (1)

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Updated: 2017-12-18 02:12:58 gmt
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