© Copyright Laurence Packer 2014 · 7 Lasioglossum subversans FEM CFP comp Click on map for details about points. IDnature guides Bee species Lasioglossum Lasioglossum Dialictus female Lasioglossum Dialictus male 80x5 - 240x3 - 240x4 - 320x1 - 320x2 - 320x3 - 640x1 - 640x2 Set display option above. Click on images to enlarge. © Copyright Laurence Packer 2014 · 7 Lasioglossum subversans MALE CFP comp Barcode of Life Data Systems · 1 Lasioglossum subversans, Barcode of Life Data Systems 3 thumbnails  •  slide show Overview Identification Summary: Small to moderate sized; scutum closely punctate but not contiguously; mesepisternum with obscure punctures; apex of tergites impunctate; Notes: This species appears similar to L. subviridatum, has few to no appressed white hairs on the abdomen, but a fair amount of long hair. It has a sparsely pitted purple metallic clypeus, wide open hair fan, and pits on the mesepisturnum that are partially obscured by surface roughness, but with close inspection clearly visible. 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 5 mm.; head and thorax dark green, abdomen greenish basally, becoming more piceous apically, terga 2 and 3 bluish across center of discs; pubescence short, thin, entirely pale, abdomen without pale tomentum; head very slightly broader than long; clypeus convex, projecting about one-half below suborbital line; supraclypeal area slightly broader than long and slightly shorter than clypeus; eyes slightly convergent below; lateral ocelli subequally distant from eyes and each other; cheeks subequal to eyes in width; face below ocelli somewhat shining between close, deep, distinct and rather fine punctures, these becoming somewhat more separated on vertex laterally; cheeks above shining, punctures minute and indistinct, becoming rather dull and finely striate beneath; hypostomal carinae parallel, apical angle narrowly rounded; lower half of face rather dull, tessellate between rather coarse and well separated punctures, supraclypeal area sparsely and very finely and shallowly punctured, dorsal margin of clypeus with very fine and close punctures, otherwise the punctures coarse, deep and rather sparse; scutum and scutellum somewhat shining, punctures rather close (much as in ceanothi, fig. 99), becoming almost crowded between notaulices and tegulae; pleura somewhat shining, punctures rather deep, distinct and close above, becoming very fine and obscure below and posteriorly; dorsal area of propodeum with rather short, incomplete but distinct striae medially, these becoming even shorter laterally, lateral faces rather dull, finely roughened; wings subhyaline, veins and stigma brownish-testaceous; tegulae more ferruginous; basal segments of legs brownish, becoming somewhat more testaceous apically; abdominal terga shining, basal tergum nearly impunctate, tergum 2 with very fine, obscure and rather close punctures across base, with apical half nearly impunctate, apical margins of terga 2-4 broadly and shallowly impressed, rims not differing markedly in color from discs, but apical terga covered with short, fine pubescence which does not obscure the surface. Retrieved from: Gibbs, J. 2010. Revision of the metallic species of Lasioglossum (Dialictus)in Canada (Hymenoptera, Halictidae, Halictini). Zootaxa; 2591, 309-313 Dialictus subversans Mitchell, 1960: 419. ♀. Holotype. ♀ USA, Michigan, Otsego Co., 26.iv.1944 (R.R. Dreisbach); [NCSU]. Examined. Dialictus perpunctatulus Knerer and Atwood, 1966a: 884. ♀ ♂. [new synonymy] Holotype. ♀ CANADA, Ontario, Arctic Watershed, Timiskaming District, 21.vi.1961 on Fragaria, (G. Knerer); [ROM: 83912]. Examined. Taxonomy. Krombein, 1967: Lasioglossum (Dialictus) subversans, p. 466 (catalogue); Dialictus perpunctatulus, p. 1970, D. subversans, p. 1972 (catalogue); Moure & Hurd, 1987: Dialictus perpunctatulus, p. 121, D. subversans, p. 132 (catalogue). Diagnosis. Females of L. subversans can be recognised by the diagnostic combination of a wide head (length/width ratio = 0.94–0.97), strongly brassy supraclypeal area, imbricate mesoscutum with moderately dense punctures on centre of disc (i=1–1.5d), distinct but irregular mesepisternal punctures, weak longitudinal rugae on metapostnotum not reaching rounded posterior margin (Fig. 213D), and brown metasomal terga with sparse tomentum and very obscure apical punctures. They are most similar to L. knereri and L. foveolatum. Female L. knereri have the mesoscutum polished due to lack of microsculpture. Female L. foveolatum have a strongly convex supraclypeal area and very strong parapsidal lines. Males of L. subversans and L. knereri can be distinguished from all other Canadian Dialictus by the very long and dense scopa-like hairs on S2–S3 and apicolateral portions of S4–S5 (Fig. 214D). They may be distinguished by the apical impressed areas of the metasomal terga which are impunctate in L. subversans but distinctly punctate in L. knereri. Redescription. FEMALE. Length 4.88–5.19 mm; head length 1.32–1.44 mm; head width1.40–1.49 mm; forewing length 3.66–3.72 mm. Colouration. Head and mesosoma greenish blue. Mandibles orange to yellow, apex red, base blackish brown. Clypeus with apical 2/3 blackish brown and basal portion, and supraclypeal area strongly bronzed. Antenna dark brown, flagellum with ventral surface reddish brown. Tegula reddish amber. Wing membrane subhyaline, venation and pterostigma brownish yellow. Legs brown, medio- and distitarsi ferruginous. Metasoma dark brown, terga and sterna with apical margins translucent brownish yellow. Pubescence. Dull white. Moderately sparse. Head and mesosoma with moderately dense woolly hairs (1– 1.5 OD), longest on genal beard, metanotum and mesopleuron (2–2.5 OD). Propodeum with moderately dense plumose hairs on lateral and posterior surfaces (2–2.5 OD). Metasomal terga with sparse, fine setae. T1 acarinarial fan sparse with dorsal opening nearly equal to lateral hair portions. T2–T4 with extremely sparse basolateral tomentum. T3–T4 apical margins with very sparse, virtually absent, fringes. Surface sculpture. Face imbricate, punctation moderately strong. Clypeus with apical half polished, punctation moderately sparse (i=1–2.5d). Supraclypeal area with punctation sparse (i=1–3d). Lower paraocular area punctation dense (i≤d). Antennocular area moderately dense (i=1–1.5d). Upper paraocular area and frons reticulate. Ocellocular area densely, minutely punctate (i≤d). Gena and postgena lineolate. Mesoscutum polished, weakly imbricate, punctation moderately strong, moderately dense between parapsidal lines (i=1–1.5d), dense laterad of parapsidal line (i≤d), and reticulate on anterolateral portions. Mesoscutellum polished, submedial punctation sparse (i=1–4d). Axilla minutely punctate. Metanotum imbricate. Preëpisternum rugulose. Hypoepimeral area weakly rugulose. Mesepisternum dorsal half weakly rugulose, punctation obscure (i≤d), ventral half imbricate, punctation more evident (i=1–2d). Metepisternum with dorsal third rugulose-striate and ventral portion imbricate. Metapostnotum incompletely rugoso-striate, posterior margin imbricate. Propodeum with dorsolateral slope and lateral surface weakly rugulose, posterior surface tessellate above, rugose below. Metasomal terga polished except apical impressed areas weakly coriarious, punctation on basal halves fine (i=1.5–2d), sparse on apical halves (i=2–6d), virtually impunctate (except along premarginal line). Structure. Head wide (length/width ratio = 0.94–0.97). Eyes convergent below (UOD/LOD ratio = 1.23– 1.27). Clypeus ½ below suborbital tangent, apicolateral margins convergent. Supraclypeal area weakly convex. Antennal sockets close (IAD/OAD < 0.5). Frontal line carinate, ending 2.5 OD below median ocellus. Gena narrower than eye. Parapsidal lines linear, obscure. Inner metatibial spur pectinate with 2–4 teeth. Metapostnotum truncate (MMR ratio = 1.20–1.40), posterior margin narrowly rounded onto posterior surface. Propodeum with oblique carina weak, lateral carina divergent, almost meeting weak. MALE. Similar to female except for the usual secondary sexual characters and as follows. Length 4.58– 5.31 mm; head length 1.31–1.39 mm; head width 1.33–1.42 mm; forewing length 3.23–3.29 mm. Colouration. Flagellum with ventral surface orange to reddish brown. Pubescence. Clypeus with sparse tomentum. Lower paraocular area with dense tomentum. Gena without tomentum. S2–S3 and S4–S5 apicolateral portions with very dense scopa-like hairs (1.5–2.5 OD). Surface sculpture. Metapostnotum completely rugoso-striate. Metasomal terga strongly punctate, apical impressed areas impunctate. Structure. Head wide (length/width ratio = 0.96–0.98). Eyes strongly convergent below (UOD/LOD ratio = 1.33–1.48). Clypeus 2/3 below suborbital tangent, apicolateral margins subparallel. Antennal sockets distant (IAD/OAD > 1.1). Frontal line carinate, ending 2 OD below median ocellus. IOD subequal to OOD. Pedicel subequal to F1. F2 length 1.7–1.9X F1. F2–F10 moderately short (length/width ratio = 1.36–1.67). Metapostnotum moderately elongate (MMR ratio = 1.10–1.32), posterior margin sharply angled onto posterior surface. Terminalia. S7 with median lobe elongate, slender, clavate, apex rounded (Fig. 214G). S8 with apicomedial margin weakly convex (Fig. 214G). Genitalia as in Fig. 214E–F. Gonobase short relative to gonocoxite, ventral arms narrowly separated. Gonostylus small, dorsal setae elongate. Retrorse lobe short, wide. Range. Nova Scotia to British Columbia, Michigan (Fig. 212). Additional material examined. CANADA: BRITISH COLUMBIA: 1♀ 4.vii.2002; [PCYU]; NEW BRUNSWICK: 1♀ Kouchibougac N.P., 13.vi.1977 (S.J. Miller); [CNC]; 1♂ Kouchibougac N.P., 3.viii.1977 (S.J. Miller); [PMAE]; NOVA SCOTIA: 1♂ Digby Co., Briar Is., N44.2354 W66.3698, 2.viii.2002 (C. Sheffield & S. Rigby); 2 ♀♀ Kings Co., Wst. Blk. Rck., N45.1298 W064.7383, 21.vi.2002 (C. Sheffield); 1♀ Kings Co., near Grafton, N45.0869 W064.6677, 31.vii.2002 (C. Sheffield); [PCYU]; ONTARIO: 1♂ paratype Hearst, 13.viii.1962 (G. Knerer); 1♀ paratype Red Lake, 15.viii.1962 (G. Knerer); [CNC]; 1♂ 8th Line Rd., Gloucester, 30.vi–5.vii.1977; 1♀ Constance Bay,, 5–8.vii.1979 (M. Sanborne); [PMAE]; 1♀ Dorset P.S., 12.v.1961 (G. Knerer); 1♂, Dorset P.S., 19.vii.1961 (G. Knerer); 1♂ Dorset P.S., 20.vii.1961 (G. Knerer); 1♀ Kabinakagami R., 12.viii.1963 (G. Knerer); 2♂♂ Upsala, 14.viii.1962 (G. Knerer); [ROM]; 1♀ Metcalf, 29.vii.1983 (B.E. Cooper); [PMAE]; SASKATCHEWAN: 2♀ Grassland Nat. Pk., prairie, N49.0711 W106.52935, 830 m, 4.vi.2007 (Goulet, Boudreault & Fernandez); [PCYU]. Floral records. ASTERACEAE: Anaphalis, Aster, Solidago, FABACEAE: Melilotus, Trifolium, SALICACEAE: Salix. Comments. Uncommon. This seems to be a boreal species. Extracted from Jason Gibbs. 2011. Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini.) Zootaxa. Lasioglossum (Dialictus) subversans (Mitchell) Dialictus subversans Mitchell, 1960: 419. ♀. Holotype. ♀ USA, Michigan, Otsego Co., 26.iv.1944 (R.R. Dreisbach); [NCSU]. Examined. Dialictus perpunctatulus Knerer and Atwood, 1966a: 884. ♀ ♂. Holotype. ♀ CANADA, Ontario, Arctic Watershed, Timiskaming District, 21.vi.1961 on Fragaria, (G. Knerer); [ROM:83912]. Examined. Taxonomy. Krombein, 1967: Lasioglossum (Dialictus) subversans, p. 466 (catalogue); Dialictus perpunctatulus, p. 1970, D. subversans, p. 1972 (catalogue); Moure & Hurd, 1987: Dialictus perpunctatulus, p. 121, D. subversans, p. 132 (catalogue); Gibbs, 2010b: Lasioglossum (Dialictus) subversans ♀♂, p. 309 (redescription, key, synonymy). Diagnosis. Female L. subversans can be recognised by the following diagnostic combination: head wide (length/ width ratio = 0.94–0.97); supraclypeal area strongly brassy; mesoscutum imbricate, punctures moderately dense between parapsidal lines (i=1–1.5d); mesepisternal punctures distinct but irregular; metapostnotum with weak longitudinal rugae, not reaching rounded posterior margin; and metasomal terga brown, with sparse tomentum, apical punctation very obscure. They are most similar to L. foveolatum, which has a strongly convex supraclypeal area and wide parapsidal lines. Male L. subversans can be distinguished from all other eastern USA L. (Dialictus) by the very long and dense scopalike hairs on S2–S3 and apicolateral portions of S4–S5 (Fig. 35A). Range. Nova Scotia west to British Columbia. USA: ME, MI. CANADA: AB, BC, NB, NS, ON, PE, PQ, SK. DNA Barcode. Available. Multiple sequences. Comments. Rare. Lasioglossum subversans seems to have a boreal distribution. Names Scientific source: Discover Life bee species guide and world checklist, Ascher and Pickering. Supported by National Biological Information Infrastructure National Science Foundation go to Discover Life's Facebook group Updated: 2024-04-19 04:20:39 gmt Discover Life | Top © Designed by The Polistes Corporation