Lasioglossum (Dialictus) sagax (Sandhouse)

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216 : 175-176

publication ID

https://doi.org/ 10.5281/zenodo.1049595

publication LSID

lsid:zoobank.org:pub:B5AF6DF4-D3A7-4942-A94F-CC051D8074CF

persistent identifier

https://treatment.plazi.org/id/9A5987DB-A7B8-FF18-0A97-8E05FE9F0386

treatment provided by

Plazi

scientific name

Lasioglossum (Dialictus) sagax (Sandhouse)
status

 

Lasioglossum (Dialictus) sagax (Sandhouse)

Halictus (Chloralictus) sagax Sandhouse, 1924: 25 .

Holotype. 3 USA, Colorado, Boulder, 28.vii. 1908 (S.A. Rohwer); [ NMNH: 26422]. Examined. Halictus (Chloralictus) accentus Sandhouse, 1924: 38 .

Holotype. 3 USA, Colorado, Boulder, University of Colorado Campus, 1.viii. 1908 (S.A. Rohwer); [ NMNH: 26442].

Examined.

Taxonomy. Michener, 1951: Lasioglossum (Chloralictus) accentum , p. 1111, L. (C.) sagax , p. 1117 (catalogue); Hurd, 1979: Dialictus accentus , p. 1963, D. sagax , p. 1971 (catalogue); Moure & Hurd, 1987: Dialictus accentus , p. 87, D. sagax , p. 128 (catalogue); Gibbs, 2010 b: Lasioglossum (Dialictus) sagax Ƥ 3, p. 286 (redescription, key, synonymy).

Diagnosis. Female L. sagax can be recognised by the following diagnostic combination: supraclypeal area densely punctate; mesoscutum imbricate, punctures moderately sparse and deep between parapsidal lines (i= 1–2 d); mesepisternum rugulose; metapostnotum coarsely rugose, reaching posterior margin; T 1 polished; acarinarial fan with dorsal opening; T 1 dorsally and T 2 apicomedially with sparse punctures; metasomal terga brown; T 2 basolaterally and T 3 –T 4 entirely with moderately abundant tomentum; and T 3 –T 4 with dense apical fringes. They are most similar to L. admirandum and L. ephialtum . Female L. admirandum have distinct punctures on dorsal surface of T 1 and apicomedial portion of T 2. Female L. ephialtum have moderately sparse apical fringes on T 3 –T 4 and mesoscutal punctures shallow between parapsidal lines.

Male L. sagax are similar to females but may be further distinguished by clypeus with distal yellow maculation, facial pubescence dense obscuring the surface below, tibiae and tarsi mostly brownish yellow, mesoscutum moderately polished due to lack of microsculpture, and metasomal terga brown with apical halves impunctate. They are most similar to L. admirandum , which has the mesoscutum dull due to microsculpture.

Range. Nova Scotia, west to Alberta, south to Colorado ( Fig. 201 View FIGURE 201 ). USA: CO, WI. CANADA: AB, BC, MB, NS, SK.

DNA Barcode. Available. Multiple haplotypes.

Comments. Common. Recorded in the eastern United States from Wisconsin (Wolf & Ascher 2009). This species belongs to the L. viridatum species-group. DNA barcodes suggest L. sagax may be a species-complex but additional study is required.

NMNH

Smithsonian Institution, National Museum of Natural History

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) sagax (Sandhouse)

Gibbs, Jason 2011
2011
Loc

Halictus (Chloralictus) sagax

Sandhouse 1924: 25
1924