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Sphecodes pimpinellae Robertson, 1900
Sphecodium pimpinellae (Robertson, 1900); Sphecodes distolus Lovell, 1909; Sphecodes shawi Lovell, 1911; Sphecodes wheeleri Mitchell, 1956

Life   Insecta   Hymenoptera   Apoidea   Halictidae   Sphecodes
Subgenus: None

Sphecodes pimpinellae FEM mm .x f
© Copyright Laurence Packer 2014 · 7
Sphecodes pimpinellae FEM mm .x f

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Overview
Identification: Female holotype of S. distolus seen by Droege, thought to be a synonym of S. pimpinellae. Ridge running from humeral angle is slightly rounded over without a clear carina. Mandible with clear tooth. Pits on scutum extremely dense all essentially touching one another. Pits on base of T2 moderately dense running about 1 pit apart all the way to the junction of the depressed rim. Scape unusually short, the distance between the rim of the clypeus the rim of the antennal fossa greater than scape. Cannot see any setae on the dorsal edge of the hind tibia. Mound on mesepisternum below base of front wing heavily reticulated. Almost always has just 2 submarginal cells. These cells created by what appears to be the simple absence of the dividing vein between what would have been the second and the third submarginal. Because other species often drop this vein, be careful to insect that the other characterisics line up when identifying this species and that both wings have lost the vein.

Identification
Extracted from: Charles Robertson (1900). Some Illinois Bees. Trans. Acad. Sci. Of st. Louis.

Female. Black, flagellum, labrum, mandibles, tegulae, tibiae, tarsi and abdomen red; mandibles dark at tips, with a dentiform angle; head broader than thorax; face closely and rather finely punctured, the clypeus with more sparse and more coarse punctures; lllesonotulll with median impressed line, roughened and indistinctly punctured in front, the disc shining, somewhat metallic, punctures more distinct; metathorax shining, coarsely reticulated, with a semicircular inclosure above; wings subhyalin, nervures and stigma fuscous; second submarginal cell narrow; first recurrent uervure uniting with second transverse cubital; abdomen shining, almost impunctate, fifth segment blackish. Length 7 mm.

Extracted from: Mitchell, T. 1962. Bees of the Eastern United States, I. North Carolina Agricultural Experiment Station. 1-191.

FEMALE-Length 6 mm.; head and thorax black, abdomen ferruginous, becoming somewhat piceous posteriorly; head much broader than long; eyes slightly convergent below; clypeus short and broad, slightly convex; labrum broadly rounded, nearly as long as broad, testaceous apically, somewhat darkened at extreme base; mandibles with an inner, subapical tooth, reddish-testaceous; antennae brownish-testaceous, basal segment of flagellum much broader than long, segment 2 also broader than long, length and breadth of the following segments subequal; lateral ocelli slightly nearer each other than to eyes; face below ocelli deeply and distinctly punctate, punctures rather close, those below antennae becoming very minute and more or less obscured by tomentum, supraclypeal area very finely and rather closely punctate, clypeus with somewhat more coarse, deep, distinct and evenly distributed punctures; vertex between eyes and ocelli somewhat shining, minutely punctate, becoming dull and obscurely striate along posterior margin and on cheeks; wings subhyaline, with two or three submarginal cells, veins and stigma brownish-testaceous; tegulae testaceous-hyaline; scutum and scutellum rather dull, punctures quite deep and distinct, well separated over posterior half of scutum, but disc becoming finely rugose anteriorly, scutellum closely punctate across anterior half, otherwise quite sparsely and irregularly punctate; pleura coarsely reticulate; dorsal area of propodeum coarsely and com- pletely striate, lateral faces obscurely striate, posterior face coarsely reticulate; legs brownish-ferruginous, becoming somewhat more testaceous apically; abdominal terga smooth and shining, basal tergum practically impunctate, tergum 2 very finely and closely punctate laterally toward base, these becoming somewhat more widely separated medially, 3 and 4 with very minute and obscure but rather close punctures over most of disc, apical margins of all terga yellowish-hyaline and impunctate.

DISTRIBUTION-Illinois to Virginia and North Carolina; July to September

FLOWER RECORDS-Robertson (1929) records pimpinellae on Eupatorium and Taenidia. It seems likely that the type specimen was collected on Pimpinella, but no records f o r t h a t plant are given in Robertson's "Flowers and Insects."

Reprinted with permission from: Mitchell, T.B. 1960 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 141.

In this excerpt, Sphecodes pimpinella is referred to as the now synonymized Sphecodes wheeleri.

FEMALE-Length 6 mm.; head and thorax black, abdomen ferruginous, becoming pice- ous apically; head much broader than long; eyes slightly convergent below; clypeus broad and rather short, slightly convex; labrum broadly rounded, dark reddish-ferruginous apically, more or less blackened basally; mandibles entirely simple, brownish-testaceous, more or less piceous at tips; antennae blackened basally, flagella brownish-ferruginous, basal segment shorter than broad, subequal to pedicel, the 2nd similar to the first, 3rd and following segments about as broad as long; lateral ocelli very slightly nearer to each other than to eyes; face below ocelli somewhat shining, punctures deep and distinct, quite close but not crowded, becoming very fine and rather obscure below, those on supraclypeal area quite close, deep and rather coarse, those on clypeus more widely separated but deep and distinct; vertex between eyes and ocelli shining, becoming obscurely and finely striate along hind margin and on cheeks below; wings subhyaline, with but two submarginal cells, veins and stigma brownish-piceous; tegulae testaceoushyaline; lqgs brownish.ferruginous basally, tibiae more or less testaceous medially and the tarsi becoming testaceous apically; scutum and scutellum rather dull, punctures deep and distinct, well separated over posterior half of scutum but becoming very close and obscure, more rugoso-punctate anteriorly; scutellum slightly grooved medially, punctures more ob- scure but well separated, becoming quite close laterally; pleura coarsely reticulate; dorsal area of propodeum coarsely, completely and regularly striate, lateral faces rather finely and irregularly striate, posterior face very coarsely reticulate; abdominal terga shining, basal tergum practically impunctate, 2nd and 3rd with exceedingly minute punctures, these rather close laterally, somewhat more widely separated but more minute and indistinct medially, apical margins of all terga very broadly yellowish-hyaline and impunctate.

MALE-Length 5-6 mm.; head and thorax black, and abdomen largely or entirely black; head considerably broader than long; eyes rather strongly convergent below; clypeus only slightly convex; mandibles brownish-testaceous, with tip slightly reddened, base more or less piceous; antennae dark basally, flagellum more or less brownish-piceous, segments barely as long as they are broad, basal segment slightly shorter; lateral ocelli very slightly nearer to each other than to eyes; lower portion of face laterally obscured by dense, pale tomentum, but clypeus and supraclypeal area partially exposed, punctures fine and rather close, those on supraclypeal area somewhat coarser than on clypeus, upper portion of face rather dull, punctures quite deep and distinct, ra- ther fine and very close, becoming rather sparse on the shining vertex between eyes and ocelli, hind margin becoming obscurely transversely striate, cheeks somewhat shining above, becoming finely striate posteriorly and below, but lower surface relatively smooth; wings subhyaline, with but two submarginal cells, wins yellowish-testaceous, stigma somewhat more brownish-testaceous; tegulae yellowishhyaline; legs piceous basally, tarsi somewhat more yellowish; scutum rather dull, anterior half obscurely and shallowly rugoso-punctate, becoming somewhat smoother posteriorly, where the punctures are distinct but rather fine, quite sparse except along hind border, those on scutellum rather fine and shallow, quite sparse except at extreme sides; pleura coarsely reticulate; dorsal area of propodeum completely and quite coarsely and regularly striate, lateral faces finely striate anteriorly, becoming coarsely reticulate posteriorly, and posterior face coarsely reticulate; abdominal terga smooth and shining, basal tergum with scattered, exceedingly minute, sparse punctures, terga 2 and 3 very finely and rather closely punctate over most of disc, becoming slightly more sparse toward the rather broad, entirely impunctate, impressed, apical margin which is more or less testaceous along rim; gonostyli (fig. 117) rather short, compressed on each side of a median carina, the inner side angulate medially, outer side broadly spatulate apically, only slightly exceeding penis valves; gonocoxites densely tomentose on lower surf ace.


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