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Hylaeus nelumbonis (Robertson, 1890)
Prosopis nelumbonis Robertson, 1890

Life   Insecta   Hymenoptera   Apoidea   Colletidae   Hylaeus
Subgenus: Prosopis

Hylaeus nelumbonis FEM mm x f
© Copyright Laurence Packer 2014 · 7
Hylaeus nelumbonis FEM mm x f

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Hylaeus nelumbonis MALE mm x ZS PMax
© Copyright Laurence Packer 2014 · 7
Hylaeus nelumbonis MALE mm x ZS PMax
Hylaeus nelumbonis, Barcode of Life Data Systems
Barcode of Life Data Systems · 1
Hylaeus nelumbonis, Barcode of Life Data Systems

Hylaeus nelumbonis, female, head
© USDA Bee Biology and Systematics Laboratory, Logan Utah · 1
Hylaeus nelumbonis, female, head
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 7-8 mm.; black, basal abdominal tergum entirely, and 2nd tergum, in large part, ferruginous, the lateral face marks reddish-testaceous; tubercles and a spot on tegulae yellow; front tibiae yellow anteriorly and mid and hind tibiae yellow at base; wings lightly infuscated apically, becoming hyaline at base, veins brownish-testaceous, stigma more piceous; length and breadth of head about equal, face narrowed below; cheeks subequal to eyes in width; foveae elongate, deep and distinct, closely parallel to upper portion of eye; lateral face marks subtriangular ending about at level of antennae; flagellum somewhat brownish beneath, piceous above, segments about as broad as long; lower portion of face with rather coarse but very shallow and indefinite punctures, upper part of face dull, punctures fine and densely crowded, cheeks dull, very finely and obscurely punctate above, punctures becoming more sparse, shallow and indistinct below; thorax somewhat elongated, considerably longer than broad, scutum dull, punctures rather deep but rather fine and closely crowded over most of disc, those on scutellum somewhat deeper and more distinct, with intervening spaces somewhat shining; metanotum dull, densely and finely rugose; dorsal triangle of propodeum quite sharply delimited, rather finely and completely rugose, posterior and lateral faces quite densely silvery tomentose; pleura dull, densely and rather coarsely rugose; abdominal terga shining, punctures exceedingly minute, hardly evident even on the more apical segments.

MALE—Length 6 mm.; black; antennae fuscous above, ferruginous beneath; scape, mandibles and labrum fuscous; tegulae testaceous, not maculated; collar entirely black; wings hyaline at base, becoming infuscated over apical half, veins and stigma ferruginous; maculations yellow, as follows: entire face below antennae, face marks terminated just above antennae and narrowly rounded at tip, tuber- des, outer and anterior faces of front tibiae, basal third of mid tibiae, basal half of hind tibiae, narrow apical rim of all the tibiae, all spurs and tarsi; front tibiae ferruginous posteriorly; legs otherwise dark reddish; base of abdomen reddish; face narrowed below; eyes convergent; cheeks slightly narrower than eyes; scape rather slender, slightly broader than flagellum; 1st and 2nd segments of flagellum about as long as broad, others considerably longer; front coxae simple; dorsal area of propodeum slightly longer than metanotum, very coarsely reticulate, propodeum otherwise densely rugose, posterior surface bordered laterally by low carinae, deeply pitted medially; metanotum coarsely rugose; scutum deeply and closely punctate, subrugose, punctures of scutellum distinctly but not widely separated; pleura coarsely rugose; basal segment of abdomen shining, punctures very sparse, minute and obscure, 2nd and following segments more closely and distinctly but very finely punctate.

DISTRIBUTION — Florida, Louisiana, Georgia and South Carolina to Illinois and Ohio; March to July.

FLOWER RECORDS—Robertson (1929) records nelumbonis on Castalia tub erosa and Nelumbo lutea. Crawford (1913) made fossata Metz a synonym of nelumbonis, but it is our conviction, after a study of the types of nelumbonis, fossata and schwarzi, together with the recently described ornatus, that it is instead a synonym of schwarzi. The reasons are given in a note following the description of ornatus.

Identification
H schwarzi is very closely related to H. nelumbonis, although the red base of the abdomen in H. nelumbonis will readily separate them. In addition, the metanotum in the female of nelumbonis is very short and flat, and is densely aand finely rugose. In H. schwarzi the metanotum is longer, more convex and quite smooth, although dull and tessellate. In the males, the basal elevations of the 3rd and 4th abdominal sterna are poorly developed or completely absent in H. nelumbonis.

Names
Scientific source:

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Updated: 2017-12-15 11:14:38 gmt
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