Lasioglossum (Dialictus) pictum (Crawford)

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216: 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-A78A-FF2B-0A97-8AE0FD190078

treatment provided by

Plazi

scientific name

Lasioglossum (Dialictus) pictum (Crawford)
status

 

Lasioglossum (Dialictus) pictum (Crawford)  

Halictus pictus Crawford, 1902 a: 236   . Ƥ.

Syntypes. 2 Ƥ USA, Nebraska, Crawford, Sioux Co., 29.vii. 1901 on Mentzelia, (M.A. Carriker)   ; [ UNSM]. Examined. Halictus graenicheri Ellis, 1914 b: 221   . Ƥ.

Holotype. 1 Ƥ USA, Wisconsin, Genoa, Vernon Co., Wisconsin, 13–19.vii. 1911 [ NMNH: 27761]. Examined. Dialictus muskegonensis Mitchell, 1960: 439   . 3.

Holotype. 3 USA, Michigan, Muskegon Co., 2.viii. 1944, (R.R. Dreisbach); [ NCSU]. Examined.

Taxonomy. Michener, 1951: Lasioglossum (Chloralictus) graenicheri   , p. 1113, L. (C.) pictum   , p. 1116 (catalogue); Krombein, 1958: Lasioglossum (Chloralictus) graenicheri   , p. 230, (catalogue); Mitchell, 1960: Dialictus pictus   Ƥ, p. 412 (redescription, synonymy); Mitchell, 1962: Dialictus pictus   , p. 547 (synonymy); Krombein, 1967: Lasioglossum (Dialictus) pictum   , p. 465 (catalogue); Hurd, 1979: Dialictus pictus   , p. 1970 (catalogue); Moure & Hurd, 1987: Dialictus pictus   , p. 122 (catalogue); Gibbs, 2010 b: Lasioglossum (Dialictus) pictum   Ƥ 3, p. 249 (redescription, key).

Diagnosis. Female L. pictum   can be recognised by the following diagnostic combination clypeus black-brown distally; postgena polished; lower paraocular area with moderately sparse tomentum; mesoscutum not obscured by tomentum; mesepisternum reticulate-punctate; legs mostly brown; and metasoma orange-yellow metasoma, apical impressed areas obscurely punctate. They are most similar to L. arantium   , which has a reddish orange metasoma and a completely lineolate postgena.

Male L. pictum   can be recognised by head moderately elongate (length/width ratio = 0.98–1.02); face with moderately dense tomentum; flagellomeres short, orange-yellow ventrally; mesoscutal punctures moderately sparse (i= 1–2 d); parapsidal line narrow; mesepisternum distinctly punctate; and metasomal terga reddish brown, apical margins orangeyellow. They are similar to L. foveolatum   , which has a very deep and wide parapsidal lines ( Fig. 15 View FIGURE 15 B) and brown metasomal terga.

Range. Ontario west to Alberta and Nebraska. USA: IN, MI, MN, NE, WI. CANADA: AB, MB, ON, SK.

DNA Barcode. Available. Multiple sequences.

Comments. Uncommon east of the Mississippi.

UNSM

University of Nebraska State Museum

NMNH

Smithsonian Institution, National Museum of Natural History

NCSU

North Carolina State University Insect Museum

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) pictum (Crawford)

Gibbs, Jason 2011
2011
Loc

Halictus pictus

Crawford 1902: 236
1902