Lasioglossum (Dialictus) perpunctatum (Ellis)

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216: 156-157

publication ID

http://doi.org/ 10.5281/zenodo.1049595

publication LSID

lsid:zoobank.org:pub:B5AF6DF4-D3A7-4942-A94F-CC051D8074CF

persistent identifier

http://treatment.plazi.org/id/9A5987DB-A78D-FF2B-0A97-8F40FD530485

treatment provided by

Plazi

scientific name

Lasioglossum (Dialictus) perpunctatum (Ellis)
status

 

Lasioglossum (Dialictus) perpunctatum (Ellis)  

Halictus perpunctatus Ellis, 1913: 210   . Ƥ.

Holotype. Ƥ USA, Colorado, Boulder, 20.iv., on Claytonia, (T.D.A. Cockerell)   , [ CAS: 15617]. Examined. Halictus brycinci Crawford, 1932: 70   . Ƥ.

Holotype. Ƥ USA, North Carolina, Bryson City   , 14.iv. 1923, (J.C. Crawford), [ NMNH: 40304]. Examined. Dialictus highlandicus Mitchell, 1960: 398   . Ƥ.

Holotype. Ƥ USA, North Carolina, Highlands   , 22.vii. 1958 [ NCSU]. Examined. Dialictus junaluskensis Mitchell, 1960: 437   . 3.

Holotype. 3 USA, North Carolina, Lake Junaluska   , 9.vi. 1955, (H.V. Weems, Jr.), [ FSCA]. Examined.

Taxonomy. Michener, 1951: Lasioglossum (Chloralictus) perpunctatum   , p. 1116 (catalogue); Mitchell, 1960: Dialictus perpunctatus   Ƥ 3, p. 411, H. brysinci   ( lapsus calami   ), p. 411 (redescription, key, synonymy); Krombein, 1967: Lasioglossum (Dialictus) highlandicum   , p. 464, L. (D.) junaluskense   , p. 464, L. (D.) perpunctatum   , p. 465 (catalogue); Hurd, 1979: Dialictus highlandicus   , p. 1966, D. junaluskensis   , p. 1967, D. perpunctatus   , p. 1970 (catalogue); Moure & Hurd, 1987: Dialictus highlandicus   , p. 104, D. junaluskensis   , p. 109, D. perpunctatus   , p. 121 (catalogue); Gibbs 2010 b: Lasioglossum (Dialictus) perpunctatum   Ƥ 3, p. 244 (redescription, key, synonymy).

Diagnosis. Female L. perpunctatum   can be recognised by the following diagnostic combination: head wide (length/ width ratio = 0.95–0.96); postgena polished; mesoscutal punctures dense throughout (i≤d) ( Fig. 13 View FIGURE 13 A); mesepisternum punctate; metapostnotal rugae reaching posterior margin; tegula ovoid with small posterior angle; metasomal terga brown, sometimes with obscure greenish reflections; T 1 acarinarial fan large, dorsal opening absent; and T 3 –T 4 with abundant tomentum. They are similar to L. miniatulum   and L. sheffieldi   . Female L. miniatulum   have postgena lineolate and less dense tomentum on T 3. Female L. sheffieldi   have head longer (length/width ratio = 1.00– 1.01) and distinctly separated punctures on median portion of mesoscutum.

Male L. perpunctatum   can be recognised by the following combination: heads moderately elongate (length/width ratio = 1.00– 1.03); flagellomeres moderately elongate (length/width ratio = 1.43–1.58); mesoscutal punctures coarse, sparse between parapsidal lines (i= 1–2 d); tegula with small posterior; mesepisternum distinctly punctate; metapostnotum with rugae reaching posterior margin; and metasomal terga with distinct punctures, sparser on apical impressed areas. They are similar to L. sheffieldi   which has a longer head (length/width ratio = 1.06–1.08).

Range. Nova Scotia west to Manitoba and Colorado, south to North Carolina. USA: CO, IN, ME, MN, NC, NJ, NY, SD, WI. CANADA: AB, MB, NS, ON, PE, SK.

DNA Barcode. Available. Multiple sequences.

Comments. Common. See Gibbs (2010).

CAS

California Academy of Sciences

NMNH

Smithsonian Institution, National Museum of Natural History

NCSU

North Carolina State University Insect Museum

FSCA

Florida State Collection of Arthropods, The Museum of Entomology

DNA

Department of Natural Resources, Environment, The Arts and Sport

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Halictidae

Genus

Lasioglossum

Loc

Lasioglossum (Dialictus) perpunctatum (Ellis)

Gibbs, Jason 2011
2011
Loc

Halictus perpunctatus

Ellis 1913: 210
1913