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Coelioxys boharti Mitchell, 1962
Life   Insecta   Hymenoptera   Apoidea   Megachilidae   Coelioxys
Subgenus: Xerocoelioxys

Coelioxys boharti, male, T6
© Rebekah Andrus Nelson · -1
Coelioxys boharti, male, T6

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Overview
Reprinted with permission from: Mitchell, T.B. 1962 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 152.


MALE—Length 12 mm.; black, tegulae more brownish-testaceous, legs obscurely reddened; eyes slightly convergent below; lateral ocelli slightly nearer eyes than to margin of vertex, and slightly nearer each other than to eyes; cheeks somewhat narrower than eyes, subcarinate posteriorly, with an elongate, bare, slightly concave area below which is conspicuously margined posteriorly by a fringe of elongate hairs, anterior margin with very short but dense pubescence; clypeus nearly flat, apical margin about straight, with a pair of fine rather widely separated tubercles, margin and surface with dense, whitish pubescence; median length of labrum about equal to basal width; median tooth of mandible distinct, approximate to the apical tooth; punctures quite deep and distinct but not very coarse, well separated across vertex, becoming quite sparse between ocelli and eyes, close and irregular on cheeks; median area of face just below anterior ocellus with scattered, irregular punctures on a rather smooth, somewhat elevated field, but remainder of face around and below antennae densely covered with appressed, pale yellowish pubescence which completely hides the surface; pubescence of cheeks above very short but subappressed, obscuring the surface; venter of thorax densely white tomentose, completely hiding surface, becoming partially exposed above, but with dense anterior and posterior fringes; scutello-mesothoracic suture with a short line of pale tomentum on each side of center, scutum with a pair of transverse, anterior lines of tomentum, and the lateral margins narrowly tomentose; pubescence of propodeum entirely pale, rather copious, erect and long; transverse carinae of tubercles erect and rather conspicuous, extended but very slightly along anterior margin of scutum, partially covered with short, dense pubescence; posterior margin of scutellum very slightly out-curved, posterior face rather distinct and densely tomentose; axillae robust, triangularly pointed apically, projecting conspicuously beyond margin of scutellum; front coxal spines well developed, compressed and somewhat spatulate, the tips rounded, densely pale pubescent posteriorly, and with some short, dense pubescence anteriorly; wings rather deeply infuscated, recurrent veins reaching 2nd submarginal cell subequally distant from base and apex; punctures of scutum coarse, deep and distinct, slightly and regularly separated over most of disc, but becoming close at extreme sides; punctures of scutellum dorsally coarse and close medially, becoming slightly separated laterally but still quite close, those of axillae somewhat finer but contiguous, becoming thus more reticulate; punctures of pleura rather shallow, coarse and irregular, very close but not crowded below, becoming closer and more reticulate above; lateral faces of propodeum smooth but rather dull, posterior face somewhat more shining, with numerous, rather close but very minute and obscure punctures, dorsal area velvety, becoming rather coarsely striate across upper margin; basal tergum closely and deeply punctate throughout, punctures not very coarse, apical margin depressed and completely whitish fasciate, fascia becoming narrower medially-, lateral margins of discs densely tomentose; transverse grooves of terga 2 and 3 submedian in center, becoming sub-basal at extreme sides, the more basal punctures quite regular, rather coarse, deep, distinct and well separated, the more apical punctures more irregular, rather widely separated at center, but becoming quite close at extreme sides, apical margins rather deeply depressed, completely whitish fasciate, disc of tergum 2 on each side with a narrow, transverse area of dense and fine punctures, which possibly represent foveae; tergum 4 thinly pale tomentose across base, apical margin deeply depressed and densely fasciate at the sides, this disappearing medially, surface shining, median punctures coarse, deep and rather sparse, becoming quite close laterally; tergum 5 densely tomentose across base, apical margin deeply depressed, fasciate only at extreme sides, disc shining, punctures rather well separated throughout; tergum 6 densely pale tomentose across base, deeply excavated at center, dorsal protuberances short, broadly rounded, subcarinate and divergent, ventral spines reduced to short, rounded protuberances which are markedly flattened, intervening space relatively shallow and rounded, lateral spines distinct and subacute; sterna 2-4 somewhat shining, punctures regular, deep, distinct and rather close throughout, apical margins depressed, yellowish-hyaline and densely white fasciate; disc of sternum 4 not emarginate medially, the depressed margin less conspicuously fasciate and with a narrow, but distinct, median emargination; sternum 5 largely hidden, apical margin submembraneous, nearly straight medially; sterna 6 and 8 entirely retracted, membraneous, 8 rather broadly rounded apically, without a conspicuous fringe; penis valves of genital armature relatively narrow at base, not much elongated, hardly equalling gonocoxites in length, these compressed, slightly dilated before the tip, but tips acuminate, apical half bearing numerous, erect and elongate hairs.

TYPE — Holotoype: Male, Cocoa, Fla., July 1944 (G. E. Bohart).
This male bears a strong resemblance to the male of galactiae but differs in the darker color of the legs, the broader vertex, and the appressed and scale-like pubescence of the pleura. Possibly it should be considered only subspecifically distinct from galactiae, but the female is needed before a positive opinion is justified.

Coelioxys boharti Mitchell

Extracted from: Baker J.R., (1975). Taxonomy of Five Nearctic Subgenera of Coelioxys (Hymenoptera; Megachilidae). The University of Kansas Science Bulletin Vol. 50, No. 12, pp.649-730.

MALE. Agrees with description and figures of Coelioxys edita except as follows: (24) Length 12-13.5 mm; (25) integument black; antenna, tegula, legs pic-eous; venter of metasoma dark ferrugi¬nous; (26) pubescence white, slightly yellow on face, golden on tarsi; (31) rest of face hidden ventrally by appressed setae about 0.15 mm long, dorsally by sub-appressed setae about 0.45 mm long; (32) clypeoantennal distance greater than an-tennocular distance, less than interantennal distance; (33) ocellar area moderately punctured; (34) ocellocular distance less than ocelloccipital distance, greater than interocellar distance; (37) excavation of hypostomal area of gena almost bare; (38) mandible with outer surface rounded as in Figure 67E; (39) scutum with anterior fascia sparse medially; (40) mesepisternum with lateral surface closely punctured with large punctures; punctures filled with appressed, squamose setae which may hide the surface; (42) axilla not carinate; (45) foveal area of tergum 2 closely punctured with small punctures, very slightly sunken; tergum 6 with dorsal spines as in Figure 38G; (47) apical margin of sternum 4, sternum 5 as in Figure 26B; sternum 8 as in Figure 26 E; genital armature with gonobase entire, setae on gonocoxite long (Fig. 39J).

DISTRIBUTION AND SEASON OF FLIGHT. Coelioxys boharti has been collected in Texas (College Station) and Florida (Alachua County, Cocoa, and La-belle, Fig. 41).

This bee is in flight at least from June 21 to August 17.

HABITAT. This bee, known only from the male, has been taken from areas classified as oak-hickory (Quercus-Carya), southern mixed forest (Fagits, Liquidam-bar, Magnolia, Pinus, Quercus), and palmetto prairie (Serenoa-Aristida).

COMPARATIVE COMMENTS. Coelioxys boharti resembles males of C. galactiae but is larger. The lateral surface of the mesepisternum is almost hidden by appressed squamose setae in C. boharti but is almost bare with scattered, erect, plumose (but slender) setae in C. galactiae.


Identification
This species is rare and is currently only known from the male. It appears to be most closely related to Coelioxys galactiae. In the advent that male boharti are collected, a watchful eye should be kept for it's potential female counterpart. It is likely that this female will closely resemble galactiae females. There is some question as to the validity of this species.

Names
Scientific source:

Geographic distribution
Florida

Natural history
Found flying in July.

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Updated: 2024-04-26 18:29:36 gmt
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