Lasioglossum (Dialictus) oblongum (Lovell)

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216: 154-155

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-A78F-FF2D-0A97-8C7EFCF906A6

treatment provided by

Plazi

scientific name

Lasioglossum (Dialictus) oblongum (Lovell)
status

 

Lasioglossum (Dialictus) oblongum (Lovell)  

Halictus oblongus Lovell, 1905 a: 40   . Ƥ 3.

Syntypes. Ƥ 3 USA, Maine, Waldoboro, 24.viii, on Eupatorium perfoliatum   [depository unknown].

Taxonomy. Lovell, 1905 a: Halictus versans   3, p. 39 (misdet.); Lovell, 1908: Halictus (Chloralictus) oblongus   3, p. 38 (description); Michener, 1951: Lasioglossum (Chloralictus) oblongum   , p. 1115 (catalogue); Mitchell, 1960: Dialictus oblongus   Ƥ 3, p. 409 (redescription, key); Krombein, 1967: Lasioglossum (Dialictus) oblongum   , p. 465 (catalogue); Hurd, 1979: Dialictus oblongus   , p. 1969 (catalogue); Moure & Hurd, 1987: Dialictus oblongus   , p. 116 (catalogue); Gibbs, 2010 b: Lasioglossum (Dialictus) oblongum   Ƥ 3, p. 211 (redescription, key).

Diagnosis. Female L. oblongum   can be recognised by the following diagnostic combination: head wide (length/ width ratio = 0.94–0.95); supraclypeal area densely punctate (i≤d); mesoscutum imbricate, punctures moderately sparse between parapsidal lines (i= 1–2 d); mesepisternum weakly rugose; metapostnotum coarsely carinate with shining interstitial areas; T 1 acarinarial fan with wide dorsal opening; and metasomal terga polished, appressed tomentum virtually absent.

Male L. oblongum   are similar to females but may be further distinguished by the head relatively elongate (length/ width ratio = 0.98–1.01), flagellomeres moderately elongate (length/width ratio = 1.54–1.58), and S 3 –S 5 apicolateral portions with moderately dense, plumose hairs.

Range. Quebec, Ontario, south to Virginia, east to Massachusetts. USA: DC, DE, IN, MA, MD, NJ, NY, VA, WI. CANADA: ON, PQ.

DNA Barcode. Available. Multiple sequences.

Comments. Uncommon.

Lasioglossum oblongum   has been reported to nest in rotten wood (Sakagami & Michener 1962). Individuals of L. oblongum   , in the sense used here, have indeed been collected from under the bark of fallen logs.

The name L. oblongum   has been applied in a sense believed to be consistent with standard usage in the last 50 years (see Mitchell 1960; Gibbs 2010 b). Until the type series is located, it remains unclear if the species referred to here as L. oblongum   is the same as the one described by Lovell (1905 a).

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) oblongum (Lovell)

Gibbs, Jason 2011
2011
Loc

Halictus oblongus

Lovell 1905: 40
1905