Lasioglossum (Dialictus) fattigi (Mitchell)

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216: 89

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-A74E-FFEF-0A97-8BABFCD0014E

treatment provided by

Plazi

scientific name

Lasioglossum (Dialictus) fattigi (Mitchell)
status

 

Lasioglossum (Dialictus) fattigi (Mitchell)  

Dialictus fattigi Mitchell, 1960: 392   . Ƥ.

Holotype. Ƥ USA, Georgia, Neel Gap, 4.viii. 1945 (P.W. Fattig); [ NCSU]. Examined.

Taxonomy. Krombein, 1967: Lasioglossum (Dialictus) fattigi   , p. 463 (catalogue); Hurd, 1979: Dialictus fattigi   , p. 1966 (catalogue); Moure & Hurd, 1987: Dialictus fattigi   , p. 100 (catalogue); Gibbs, 2010 b: Lasioglossum (Dialictus) fattigi   Ƥ 3, p. 129 (redescription, key).

Diagnosis. Female L. fattigi   can be recognised by the following diagnostic combination: lower paraocular punctures relatively sparse (i= 1–1.5 d); mesoscutum weakly imbricate, punctures moderately dense between parapsidal lines (i= 1– 2 d); mesepisternum tessellate-imbricate, shallow punctures visible; T 1 acarinarial fan with dorsal opening; T 1 declivitous surface dull due to distinct coriarious microsculpture; and T 3 –T 4 with sparse tomentum not obscuring surface and weak apical fringes. They are most similar to L. paradmirandum   and L. katherineae   . Female L. paradmirandum   have head less robust, dense punctures on lower paraocular area (i≤d), mesoscutum tessellate, and T 3 –T 4 with relatively dense tomentum partially obscuring surface and strong apical fringes. Female L. katherineae   have T 1 acarinarial fan complete, without dorsal opening.

Male L. fattigi   are similar to females but may be further distinguished by head elongate (length/width ratio = 1.07); flagellomeres moderately elongate (length/width ratio = 1.62–1.64), pale brownish yellow ventrally; mesepisternum imbricate-tessellate; metapostnotum with posterior margin rounded onto vertical surface; and apical impressed areas of metasomal terga impunctate. They are most similar to L. mitchelli   and L. paradmirandum   . Male L. mitchelli   have posterior margin of metapostnotum distinctly angled, mesoscutum more densely punctate, and mesepisternum rugulose. Male L. paradmirandum   have head shorter (length/width ratio = 1.03–1.04) and upper portion of mesepisternum weakly reticulate.

Range. Ontario south to Georgia. USA: GA, MA, NC, NH, NY. CANADA: ON.

DNA Barcode. Available. Multiple sequences.

Comments. Lasioglossum fattigi   is usually uncommonly collected, however, a long series was examined from the Niagara region of southern Ontario ( Richards et al. 2011).

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) fattigi (Mitchell)

Gibbs, Jason 2011
2011
Loc

Dialictus fattigi

Mitchell 1960: 392
1960