Scientific Name: Lasioglossum cephalotes (Dalla Torre, 1896)

Common Name: Lasioglossum cephalotes


Halictus cephalicus Robertson, 1892: 270 [♀,♂‚] [preoccupied, not Halictus cephalicus Morawitz, 1873]

     Lectotype ♀ [designated by LaBerge, in Webb 1980: 116]. USA, Illinois, Carlinville, 21 July 1891, by C. Robertson [INHS no. 11111]

Halictus cephalotes Dalla Torre, 1896: 57. [new name for H. cephalicus Robertson]


Species Notes

This is the type species for the genus-group Paralictus.

The DNA Barcode Index Number (BIN) for this species has not been assigned.



♀ body length: 4.76–4.88 mm; head length: 1.44–1.73 mm; head width: 1.82–1.85 mm; forewing length: 3.90–4.03 mm

♂‚ body length: 5.80 mm; head length: 1.38–1.58 mm; head width: 1.49–1.70 mm; forewing length: 4.03 mm



This species is a social parasite, and hosts include other Dialictus; it has been found at nesting sites of Lasioglossum zephyrum (Robertson 1901, 1926). The Ontario records for this species reported by MacKay and Knerer (1979) were misidentifed specimens of L. lionotum (Gibbs 2010), another social parasite. Thus, no Canadian specimens of L. cephalotes are known, but because it has been found in adjacent arease of the United States, and because  presumed host species, L. zephyrum, is widespread in Canada it is likely that it occurs in southern Ontario.


Extent of Occurrence (EOO) in Canada (http://geocat.kew.org/): N/A

Index of Area of Occupancy (IAO) in Canada (http://geocat.kew.org/): N/A




Dalla Torre CG (1896) Catalogus Hymenopterorum Vol. X, Apidae (Anthophilia). Leipzig, Engelmann, 643 pp.

Gibbs J (2010) Revision of the metallic species of Lasioglossum (Dialictus) in Canada (Hymenoptera, Halictidae, Halictini). Zootaxa 2591: 1-382.

Robertson C (1892) Descriptions of new North American bees. American Naturalist 26: 267 274.

Robertson C (1901) Some new or little-known bees. The Canadian Entomologist 33(8): 229–231. https://doi.org/10.4039/Ent33229-8

Robertson C (1926) Phenology of inquiline and nest-making bees. Psyche 33: 116–120.

Sociality: Social Parasite
Nesting: Ground
Pollen Specialization: Not Applicable
Wintering Stage: Mated Female

Crop Preference: Not Available
Non Crop Preference: Solidago sp., Cirsium sp., Cornus sp., Salix nigra, Cynanchum laeve, Leucanthemum sp.