Lasioglossum (Dialictus) heterognathum (Mitchell)

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216: 118-119

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-A763-FFC1-0A97-8D85FD4007A5

treatment provided by

Plazi

scientific name

Lasioglossum (Dialictus) heterognathum (Mitchell)
status

 

Lasioglossum (Dialictus) heterognathum (Mitchell)  

Dialictus heterognathus Mitchell, 1960: 397   . Ƥ.

Holotype. Ƥ USA, North Carolina, Grandfather Mt.   , 27.vi. 1952, [ NCSU]. Examined. Dialctus banksi Mitchell, 1960: 434   . 3. Lapsus calami   .

Holotype. 3 USA, North Carolina, West End, 14.vi. 1950, (Mitchell); [ NCSU]. Examined.

Taxonomy. Knerer and Atwood, 1963: Dialictus heterognathus   3, p. 167 (description); Knerer and Atwood, 1966 a: D. heterognathus   , p. 882 (synonymy); Krombein, 1967: Lasioglossum (Dialictus) heterognathum   , p. 463 (catalogue); Hurd, 1979: Dialictus heterognathus   , p. 1966 (catalogue); Moure & Hurd, 1987: Dialictus heterognathus   , p. 103 (catalogue); Gibbs, 2010 b: Lasioglossum (Dialictus) heterognathum   Ƥ 3, p. 136 (redescription, key).

Diagnosis. Female L. heterognathum   can be recognised by the following diagnostic combination: hypostomal carinae divergent towards mandible bases ( Fig. 10 View FIGURE 10 B), gena wider than eye, mesoscutal punctures fine, and scopa present. They are similar to L. apocyni   and L. imitatum   , which both have hypostomal carinae parallel and female L. imitatum   have T 3 –T 4 with coarse white hairs ( Fig. 20 View FIGURE 20. T 3 – T 4 A).

Male L. heterognathum   can be recognised by the following diagnostic combination: facial tomentum dense only on lower paraocular area; flagellomeres elongate (length/width ratio = 1.50–1.85); dorsolateral angles of pronotum obtuse; mesoscutum dull due to weak microsculpture, punctures sparse between parapsidal lines (i= 2–3 d); mesepisternal punctures fine but distinct (i= 1–3 d); and apical impressed areas of the metasomal terga impunctate. They are most similar to L. wheeleri   , which have pronotal dorsolateral angles acute.

Range. Nova Scotia to Ontario, west to Minnesota, and south to North Carolina. USA: CT, ME, MI, MN, NH, NY, NC, PA, VT, WV, WI. CANADA: NB, NS, ON, PQ.

DNA Barcode. Available. Multiple sequences.

Comments. Common. See Gibbs (2010 b).

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) heterognathum (Mitchell)

Gibbs, Jason 2011
2011
Loc

Dialictus heterognathus

Mitchell 1960: 397
1960