Lasioglossum (Dialictus) viridatum (Lovell)

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216: 207-208

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-A7D8-FF78-0A97-8CBAFDC906F8

treatment provided by

Plazi

scientific name

Lasioglossum (Dialictus) viridatum (Lovell)
status

 

Lasioglossum (Dialictus) viridatum (Lovell)  

Halictus viridatus Lovell, 1905 b: 300   . Ƥ 3.

Lectotype. Ƥ USA, Maine, Waldoboro, vi, [ NMNH: 71574] designated herein. Examined. Dialictus lepidus Mitchell, 1960: 438   . 3.

Holotype. 3 USA, Michigan, Keweenaw Co., 27.viii. [year obscured] (R.R. Dreisbach); [ NCSU]. Examined.

Taxonomy. Michener, 1951: Lasioglossum (Chloralictus) viridatum   , p. 1118 (catalogue); Mitchell, 1960: Dialictus viridatus   Ƥ, p. 430 (redescription); Mitchell, 1962: Dialictus viridatus   , p. 547 (synonymy); Krombein, 1967: Lasioglossum (Dialictus) viridatum   , p. 466 (catalogue); Dialictus viridatus   , p. 1973 (catalogue); Moure & Hurd, 1987: Dialictus viridatus   , p. 139 (catalogue); Gibbs, 2010 b: Lasioglossum (Dialictus) viridatum   Ƥ 3, p. 351 (redescription, key).

Diagnosis. Female L. viridatum   can be recognised by the following diagnostic combination: head wide (length/ width ratio = 0.94–0.96); mesoscutum imbricate, punctures moderately coarse, relatively sparse between parapsidal lines (i= 1–2 d); tegula reddish brown; mesepisternum strongly rugose ( Fig. 17 View FIGURE 17 A); metapostnotum rugoso-carinulate reaching the posterior margin; T 1 acarinarial fan with dorsal opening; metasomal terga brown, apical halves obscurely punctate; and T 4 with sparse tomentum, partially obscuring surface. They are most similar to L. atwoodi   , which has metapostnotal rugae almost but not reaching the posterior margin and T 4 with only scattered tomentum, not obscuring surface.

Male L. viridatum   are similar to females but may be further distinguished by head relatively long (length/width ratio = 1.01–1.02), flagellomeres long (length/width ratio = 1.56–1.64), mesoscutum reticulate anterolaterally, tarsi brownish yellow, apical impressed areas of metasomal terga impunctate, and apicolateral portions of S 3 –S 5 with moderately dense plumose hairs.

Range. Nova Scotia west to Manitoba, south to North Carolina. USA: CT, IN, MA, ME, MI, MN, NC, NH, NY, WI. CANADA: MB, NB, NS, ON, PE.

DNA Barcode. Available. Multiple sequences.

Comments. Common.

The name-bearing type has lectotype labels from both Mitchell and Covell. No publication by either of these authors could be found that makes a valid lectotype designation. To maintain stable usage of the name, the specimen indicated above is designated as the lectotype.

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) viridatum (Lovell)

Gibbs, Jason 2011
2011
Loc

Halictus viridatus

Lovell 1905: 300
1905