Lasioglossum (Dialictus) ephialtum Gibbs

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216: 88

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-A741-FFE0-0A97-8F40FE6C027E

treatment provided by

Plazi

scientific name

Lasioglossum (Dialictus) ephialtum Gibbs
status

 

Lasioglossum (Dialictus) ephialtum Gibbs  

Lasioglossum (Dialictus) ephialtum Gibbs, 2010 b: 124 View Cited Treatment   . Ƥ 3.

Holotype. Ƥ CANADA, Ontario, Toronto, Brunswick Ave., N 43.66165 W079.40571, 6.x. 2006 (J. Gibbs); [ PCYU].

Diagnosis. Female L. ephialtum   can be recognised by the following diagnostic combination: head moderately wide to round (length/width ratio = 0.95–0.99); mesoscutum imbricate, punctures moderately sparse between parapsidal lines (i= 1–2 d); mesepisternum rugulose-imbricate; metapostnotal rugae reaching, or nearly reaching, posterior margin; metasomal terga brown, polished due to weak microsculpture; T 1 acarinarial fan with distinct dorsal opening; T 2 –T 4 basolaterally with moderately dense tomentum; and T 3 –T 4 with moderately dense apical fringes. They are similar to L. planatum   , which has shorter metapostnotal rugae except for a single long medial carina, and less abundant pubescence on the metasomal terga.

Male L. ephialtum   are similar to females but may be further distinguished by flagellomeres elongate (length/width ratio = 1.80–1.85), mesoscutum weakly imbricate, tarsi brownish yellow, metapostnotum strongly rugose, metasomal terga impunctate on apical halves, T 2 –T 4 basolaterally with sparse tomentum, and S 2 –S 5 apicolaterally with moderately dense pubescence. They are similar to L. laevissimum   and L. mitchelli   . Male L. laevissimum   lack tomentum on the metasomal terga and have obscure punctures on the lower portion of the mesepisternum. Male L. mitchelli   have denser punctures on the metasomal terga that are only absent on the apical impressed areas and the mesoscutum tessellate.

Range. New Brunswick south to West Virginia, west to Manitoba, Colorado. USA: CO, CT, DC, IL, IA, IN, MA, MD, ME, MN, NH, NJ, NY, PA, WI, WV. CANADA: NB, NS, ON, PQ.

DNA Barcode. Available. Multiple sequences.

Comments. Common.

PCYU

The Packer Collection at York University

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) ephialtum Gibbs

Gibbs, Jason 2011
2011
Loc

Lasioglossum (Dialictus) ephialtum

Gibbs 2010: 124
2010