© Copyright Laurence Packer 2014 · 7 Lasioglossum michiganense MALE 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 source/photographer · 5 Lasioglossum michiganense, F, Back, NY, Queens © Copyright source/photographer · 5 Lasioglossum michiganense, F, Face, NY, Queens © Copyright source/photographer · 5 Lasioglossum michiganense, F, Side, NY, Queens 4 thumbnails  •  slide show Overview Identification Summary: Large to moderate sized; parasitic; thorax very dark blue with green overtones; unlike other parasitic species this species has a clear tooth on the mandible similar to other non-parasitic species; propodeal triangle completely striate; on 2 specimens first recurrent vein joins 2nd submarginal several vein widths into the cell, this may be distinctive; cheek not as wide as several of the other parasitic species and not at all angled along its rim. Retrieved from: Gibbs, J. 2010. Revision of the metallic species of Lasioglossum (Dialictus)in Canada (Hymenoptera, Halictidae, Halictini). Zootaxa; 2591, 191-194 Paralictus michiganensis Mitchell, 1960: 448. ♀. Holotype. ♀ USA, Michigan, Wayne Co., 2.vi.1940, [NCSU]. Examined. Taxonomy. Krombein, 1967: Lasioglossum (Paralictus) michiganense, p. 467; (catalogue); Hurd, 1979: Paralictus michiganensis, p. 1974 (catalogue); Moure & Hurd, 1987: Paralictus michiganensis, p. 143 (catalogue). Diagnosis. For females see diagnosis for L. asteris. Males of L. michiganense may be recognised by the diagnostic combination of the pronotum strongly striate, mesoscutum faintly polished due to weak microsculpture, mesoscutal punctures fine, and very sparse hairs on the metasomal sterna. They are most similar to L. mitchelli which have the pronotum imbricate. Redescription. FEMALE. Length 5.12–5.98 mm; head length 1.51–1.54 mm; head width 1.75–1.80 mm; forewing length 4.33–4.45 mm. Colouration. Head and mesosoma purplish metallic, mesepisternum with green reflections. Clypeus apical portion blackish brown. Antenna dark brown, flagellum with venral surface reddish brown. Tegula reddish brown. Wing membrane subhyaline, venation and pterostigma reddish amber. Legs brown, tarsi reddish brown-brownish yellow. Metasoma blackish brown, terga and sterna margins translucent reddish to yellowish brown. Pubescence. Dull white. Sparse. Head and mesosoma with moderately dense woolly hairs (1–1.5 OD), longest on genal beard, metanotum and mesopleuron (1.5–2 OD). Face without appressed hairs. Clypeus distal margin with long bristles (2–3 OD). Propodeum with moderately dense plumose hairs on lateral and posterior surfaces (1.5–2 OD). Mesofemoral and mesotibial combs present but sparse relative to non-parasites. Femoral scopa greatly reduced, only a few long, curved hairs remain. Penicillus reduced relative to non-parasites. Metasomal terga with sparse, fine setae and no tomentum. T1 acarinarial fan with wide dorsal opening. T2–T3 apicolateral and T4 apical margins with very sparse fringes. Metasomal sterna with sparse posteriorly curved hairs (2–3 OD). Surface sculpture. Face imbricate, punctation fine, shallow. Clypeus with apical half polished, punctation moderately sparse (i=1–3d). Supraclypeal area with punctation dense (i≤d). Lower paraocular area punctation dense (i≤d). Antennocular area punctation moderately dense (i=1–1.5d). Upper paraocular area and frons reticulate-punctate. Ocellocular area punctate (i=1–1.5d). Gena lineolate. Postgena imbricate. Mesoscutum weakly imbricate, punctation fine, shallow, moderately sparse between parapsidal lines (i=1–2d), dense laterad of parapsidal lines (i≤d), contiguous on anterolateral portions. Mesoscutellum similar to mesoscutum, submedial punctation sparse (i=3–6d). Axilla punctate. Metanotum imbricate. Preëpisternum rugulose above, imbricate below. Hypoepimeral area imbricate, obscurely punctate. Mesepisternum vertically striate, obscurely punctate. Metepisternum with dorsal third striate, ventral portion imbricate. Metapostnotum with complete anastomosing rugae. Propodeum with lateral surface obliquely striate, posterior surface imbricate. Metasomal terga weakly coriarious, punctation on basal halves moderately sparse (i=2–3d), sparse on apical halves (i=2–4d). Structure. Head very wide (length/width ratio = 0.84–0.85). Eyes weakly convergent below (UOD/LOD ratio = 1.06–1.12). Labrum enlarged and flattened, apical process without dorsal keel. Mandible large with distinct subapical tooth. Clypeus 1/3 below suborbital tangent, apicolateral margins convergent. Antennal sockets moderately close (IAD/OAD = 0.6). Frontal line carinate, ending 2 OD below median ocellus. IOD subequal to OOD. Gena wider than, or subequal to, eye. Pronotal dorsolateral angle orthogonal. Basitibial plate lower carina present. Inner metatibial spur pectinate with 4–5 teeth. Metapostnotum truncate (MMR ratio = 1.33–1.52), posterior margin sharply angled onto posterior surface. Propodeum with oblique carina virtually absent, lateral carina weak, not reaching dorsal margin. T5 medial specialized area reduced. MALE. Similar to female except for the usual secondary sexual characters and as follows. Length 5.43– 6.10 mm; head length 1.44–1.46 mm; head width 1.49–1.51 mm; forewing length 3.97–4.00 mm. Colouration. Flagellum with ventral surface orange-yellow. Tibial bases and tarsi brownish yellow. Pubescence. Face below eye emargination with sparse tomentum not obscuring surface. Lower paraocular area with dense tomentum obscuring surface. Gena without tomentum. S2–S3 apical portions with sparse hairs (1 OD). Surface sculpture. Clypeal punctation moderately dense (i=1–2d). Pronotum coarsely striate. Metanotum rugose. Mesepisternum anterior portion weakly rugulose, posterior portion minutely punctate (i=1–1.5d). Metasomal terga with punctation on basal halves moderately sparse (i=1.5–2d), apical halves impunctate (except along premarginal line). Structure. Head moderately wide (length/width ratio = 0.97). Eyes strongly convergent below (UOD/LOD ratio = 1.43–1.48). Clypeus 2/3 below suborbital tangent, apicolateral margins weakly convergent. Antennal sockets distant (IAD/OAD > 1.3). Frontal line carinate, ending 1.5 OD below median ocellus. Pedicel shorter than F1. F2 length 1.6–1.7X F1. F2–F10 moderately elongate (length/width ratio = 1.58–1.83). Pronotal dorsolateral angle obtuse. Pronotal ridge strongly angled, weakly interrupted by oblique sulcus. Metapostnotum moderately elongate (MMR ratio = 1.33–1.40), posterior margin weakly angled onto posterior surface. Terminalia. S7 with median lobe strongly clavate, apex rounded (Fig. 145D). S8 with apicomedial margin weakly convex (Fig. 145D). Genitalia as in Fig. 145D–E. Gonobase with ventral arms widely separated. Gonostylus small, dorsal setae elongate. Retrorse lobe elongate, weakly attenuated, recurved apically. Range. Southern Ontario south to North Carolina, west to Wisconsin (Fig. 143). Additional material examined. CANADA: ONTARIO: 1♂ Brock, 24.ix.2003; 1♀ Toronto, York University, N43.77175 W079.4965, 3.x.2006 (H. Ngo); [PCYU]; USA: DISTRICT OF COLUMBIA: 1♀ Washington, N38.89138 W077.02416, 18–19.x.2004 (E. Keto); NORTH CAROLINA: 1♂ Grandfather Mtn., N36.08942 W081.83699, 13viii.2006 (J. Gibbs); [PCYU]. Comments. Rare. This is a parasitic species. First description of male. Extracted from Jason Gibbs. 2011. Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini.) Zootaxa. Lasioglossum (Dialictus) michiganense (Mitchell) Paralictus michiganensis Mitchell, 1960: 448. ♀. Holotype. ♀ USA, Michigan, Wayne Co., 2.vi.1940, [NCSU]. Taxonomy. Krombein, 1967: Lasioglossum (Paralictus) michiganense, p. 467; (catalogue); Hurd, 1979: Paralictus michiganensis, p. 1974 (catalogue); Moure & Hurd, 1987: Paralictus michiganensis, p. 143 (catalogue); Gibbs, 2010b: Lasioglossum (Dialictus) michiganense ♀♂, p. 191 (redescription, key). Diagnosis. Female L. michiganense can be recognised by the following diagnostic combination: head wide (length/ width ratio = 0.84–0.85); labrum with apical process flat, dorsal keel absent (Fig. 6B); mandible with preapical tooth present (Fig. 30B); gena wider than eye; and mesepisternum with vertical carinula. Male L. michiganense can be recognised by the following diagnostic combination: pronotum strongly carinulate; mesoscutum with weak microsculpture, punctures fine, sparse between parapsidal lines; metasomal sterna with very sparse hairs; and S7 median lobe clavate. They are most similar to L. platyparium, which has S7 median lobe acuminate. Range. Southern Ontario south to North Carolina, west to Wisconsin. USA: DC, IL, MI, NC, NY. CANADA: ON. DNA Barcode. Available. Multiple sequences. Comments. Rare. Lasioglossum michiganense is presumed to be a social parasite or cleptoparasite of nest-building Lasioglossum (Dialictus). 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: 2024-04-29 08:31:25 gmt Discover Life | Top © Designed by The Polistes Corporation