Lasioglossum (Dialictus) platyparium (Robertson)

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216: 158-159

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-A78B-FF29-0A97-8D48FBC40786

treatment provided by

Plazi

scientific name

Lasioglossum (Dialictus) platyparium (Robertson)
status

 

Lasioglossum (Dialictus) platyparium (Robertson)  

Halictus platyparius Robertson, 1895: 117   . Ƥ.

Lectotype. Ƥ USA, Illinois, Macoupin Co. Carlinville, 18.v. 1887 (C. Robertson); [ INHS: 3995] by W. E. LaBerge (in Webb 1980). Examined.

Taxonomy. Robertson, 1901: Paralictus platyparius   , p. 229 (generic description); Michener, 1951: Lasioglossum (Paralictus) platyparium   , p. 1119 (catalogue); Mitchell, 1960: Paralictus platyparius   Ƥ 3, p. 448 (redescription); Krombein, 1967: Lasioglossum (Paralictus) platyparium   , p. 467 (catalogue); Paralictus platyparius   , p. 1974 (catalogue); Moure & Hurd, 1987: Paralictus platyparius   , p. 143 (catalogue); Gibbs, 2010 b: Lasioglossum (Dialictus) platyparium   Ƥ 3, p. 261 (redescription, key).

Diagnosis. Female L. platyparium   can be recognised by the following diagnostic combination: scopa absent; gena wider than eye; mandible large, converging to point only near apex, distinct preapical tooth absent; labrum with distinct basal tubercle, apical process flat, dorsal keel absent ( Fig. 6 View FIGURE 6 B); and metapostnotum rugoso-carinulate. They are similar to L. cephalotes   and L. rozeni   . Female L. rozeni   have a narrow mandible that is evenly convergent along its entire length and lacks a distinct basal tubercle on the labrum. Female L. cephalotes   lack a distinct basal tubercle on the labrum and have a smooth metapostnotum without evident rugae.

Male L. platyparium   can be recognised by head wide (length/width ratio = 0.95–0.96), dorsolateral angle of pronotum acute, pronotal collar weak, and mesepisternum rugulose.

Range. Ontario south to Georgia, Louisiana and west to Minnesota. USA: DC, GA, IL, KS, LA, MD, MN, MO, NC, PA, WV, WI. CANADA: ON.

DNA Barcode. Available. Multiple sequences.

Comments. Uncommon.

Lasioglossum platyparium   is presumed to be a social parasite of nest-building Dialictus   . It is perhaps the most commonly collected of the parasitic L. ( Dialictus   ) but its host species remains unknown.

INHS

Illinois Natural History Survey

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) platyparium (Robertson)

Gibbs, Jason 2011
2011
Loc

Halictus platyparius

Robertson 1895: 117
1895