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Xenoglossa strenua (Cresson, 1878)
Melissodes strenua Cresson, 1878; Eucera strenua (Dalla Torre, 1896); Xenoglossa cucurbitarum Cockerell, 1896; Melissodes strenua; Xenoglossa cucurbitarum

Life   Insecta   Hymenoptera   Apoidea   Apidae   Xenoglossa
Subgenus: Eoxenoglossa

Xenoglossa strenua, F, Back, MD, Upper Marlboro ---.
© Copyright source/photographer · 5
Xenoglossa strenua, F, Back, MD, Upper Marlboro ---.

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Xenoglossa strenua, F, Face, MD, Upper Marlboro ---.
© Copyright source/photographer · 5
Xenoglossa strenua, F, Face, MD, Upper Marlboro ---.
Xenoglossa strenua
Ron Hemberger · 1
Xenoglossa strenua

Xenoglossa strenua, front
Ron Hemberger · 1
Xenoglossa strenua, front
Xenoglossa strenua, Barcode of Life Data Systems
Barcode of Life Data Systems · 1
Xenoglossa strenua, Barcode of Life Data Systems

Xenoglossa strenua, female, face text
© USDA Bee Biology and Systematics Laboratory, Logan Utah · 1
Xenoglossa strenua, female, face text
Xenoglossa strenua, male, face text
© USDA Bee Biology and Systematics Laboratory, Logan Utah · 1
Xenoglossa strenua, male, face text

Xenoglossa strenua, male, top
© Mary Paul · 1
Xenoglossa strenua, male, top
Xenoglossa strenua, male, side
© Mary Paul · 1
Xenoglossa strenua, male, side

Xenoglossa strenua, male, face
© Mary Paul · 1
Xenoglossa strenua, male, face
Xenoglossa strenua, female, top
© Mary Paul · 1
Xenoglossa strenua, female, top

Xenoglossa strenua, female, side
© Mary Paul · 1
Xenoglossa strenua, female, side
Xenoglossa strenua, female, face
© Mary Paul · 1
Xenoglossa strenua, female, face
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 14-18 mm., breadth abdomen 6-6.5 mm.; black, the labrum yellowish, inandibles pale yellowish at base, more testaceous over apical half; legs brownishferruginous, apical tarsal segments somewhat darker, mid and hind spurs dull testaceous; tegulae yellowish-hyaline; wings faintly yellowish-brown, veins piceous; cheeks very slightly narrower than eyes; clypeus rather strongly protuberant, its median length half the distance between eyes below; eyes slightly divergent below; mandibles slender and simple apically, but with an inner, subbasal angle (fig. 73); basal segment of flagellum about equal to segments 2 and 3 combined; median length of labrum about half the basal width, apical margin rather broadly truncate; dypeus closely and rather coarsely punctate, becoming more finely and densely so toward apical margin; labrum somewhat more deeply but finely punctate medially, punctures becoming somewhat coarser but still close laterally; supraclypeal area rather dull, with scattered, rather sparse, shallow punctures, those on lateral surfaces of face below level of antennae shallow and rather close, becoming minute and close above antennae, the more median punctures being rather coarse and slightly separated; surface between eyes and ocelli shining, nearly impunctate; cheeks finely and closely but quite distinctly punctate; scutum, scutellum and pleura quite closely and finely punctate throughout, propodeum posteriorly very minutely and closely punctate, dorsal triangle somewhat more coarsely so, lateral faces dull, very finely and closely punctate; abdominal terga 1-3 shining, punctures quite deep and distinct, rather fine in general, close laterally, becoming rather sparse medially on 1 and 2, uniformly close on 3 and 4; terga 1-4 narrowly impunctate along apical rims; pygidium rather strongly triangular, apex very narrowly rounded or subacute; pubescence entirely pale ochraceous, quite dense and elongate on head, thorax, legs, and basal abdominal tergum, rather short but very dense on dorsum of thorax, hiding the surface, dense, copious and elongate on each side of propodeum, somewhat paler and thinner over most of face and on pleura below and posterior face of propodeum, basal tergum largely bare over apical half; tergum 2 largely bare medially, with a basal, yellowish tomentose area that is largely covered by the basal tergum, this narrowly contiguous with a submedian yellowish fascia that fringes the apical impressed area at base on each side, widely interrupted medially; impressed area on tergum 3 rather broadly fringed with yellowish tomentum, slightly interrupted medially but much broadened laterally to fill the entire lateral margins; tergum 4 largely covered with pale ochraceous tomenturn, only apical rim exposed; tergum 5 largely yellowish tomentose, with a dense apical finibria of more ochraceous pubescence.


MALE—Length 14-15.5 mm., breadth of abdomen 5.5-6 mm.; black, the clypeus bright yellow in large part, apical margin narrowly testaceous and dorsal margin invaded narrowly with black; labrum yellowish; mandibles broadly yellowish at base, apex more testaceous or orange; legs brownish-ferruginous in large part, mid and hind spurs rather dull testaceous; tegulae yellowish-hyaline; wings subhyaline, veins piceous to black; cheeks sub- equal to eyes in width; clypeus quite strongly protuberant, its median length somewhat greater than half the distance between eyes below (fig. 73); eyes very slightly divergent below; mandibles slender and simple apically, but with a strong sub-basal inner angle; basal segment of flagellum slightly shorter than segments 2 and 3 combined; punctures of clypeus rather coarse and close, those on labrum somewhat finer, but deeper and more distinct; supraclypeal area rather dull, punctures obscure, lateral areas below level of antennae dull, punctures shallow and vague but rather close, becoming somewhat finer and closer above antennae, surface shining between eyes and lateral ocelli; cheeks rather finely and closely punctate beneath rather dense but short pubescence; scutum, scutellum, pleura and propodeum quite dull, punctures fine and close throughout, somewhat more minute on posterior face of propodeum; punctures of abdominal terga deep and distinct but rather fine, well separated medially on terga 1 and 2, becoming densely crowded at lateral margins, apical impressed areas punctate in part, the narrow rims shining and impunctate; terga 3-6 finely and closely punctate throughout except for the narrow apical rims, more minutely and densely punctate on the more apical terga; tergum 6 with a robust, triangular, posterior spine on each extreme side; pubescence largely pale ochraceous, quite short, dense and somewhat more fulvous on dorsurn of thorax, more whitish on face and cheeks below, rather copious and elongate on basal half of basal abdominal tergum; terga 2 and 3 with pale ochraceous, basal fasciae that may be partially covered by the preceding plates, apical impressed areas to some degree fringed with ochraceous toinentum, widely interrupted on 2, more narrowly so on 3, discs otherwise largely bare; terga 4 and 5 with subapical, quite dense, yellowish fasciae, basal areas thinly yellowish pruinose; tergum 6 densely yellowish tomentose apically; median length of pygidial plate slightly greater than basal width, margins subcarinate, slightly converging apically to the abruptly truncate apex; steriia 7 and 8 and genital armature as shown (fig. 74).


DISTRIBUTION—Specimens of strenua are at hand from California, Virginia, North Carolina, Georgia and Florida. The type locality is Texas. It is in flight during June, July and August.
FLOWER RECORD S—Cucurbita. Robertson (1929) records it also on Ipomoea and Asclepias. Probably his identification was correct, but there is a possibility that these records should apply to kansensis.
Two females of strenua were found in a light trap at Clayton, N. C., on July 5, 1956.

Names
Scientific source:

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FamilyScientific name @ source (records)
Cucurbitaceae  Cucurbita foetidissima @ BBSL (3)

Cucurbita pepo @ BBSL (3)

Cucurbita sp @ BBSL (2)

Cucurbita @ AMNH_BEE (2)
_  Withheld @ BBSL__CAVE (4)

cucurbit @ NLA (3)

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Updated: 2017-10-23 05:12:26 gmt
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