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Native castor halictid

Scientific Name
Lasioglossum (Chilalictus) castor
Scientific Author
Walker, 1995
(Hymenoptera: Halictidae: Halictinae: Halictini)
Native Australian Beneficial Species

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Diagnostic Images

Dorsal view - female
WA. 15km NE of Mt Singleton, 28-29 Sept 1981, Naumann and Cardale det. K. Walker 1994
Ken Walker Museums Victoria
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Diagnostic Images (12)
Other Images (2)
Diagnostic Notes
Lasioglossum (Chilalictus) castor Walker, K. 1995. Revision of the Australian native bee subgenus Lasioglossum (Chilalictus) (Hymenoptera: Halictidae). Memoirs of the Museum of Victoria 55: 1–423 [92].

Type data: Holotype NMV T - 15544 f, 39 km NNW Gingin WA [31º01'S 115º55'E].

Diagnosis. Most like L. pollux. Both sexes black. Female with frons reticulate/striate, mesoscutum shining, densely punctate, dorsal surface of propodeum coarsely ruguloso-striolate, not defined by carinae, T1 with median lateral tomentose hair tufts, BP narrowed, acutely pointed. Male with antennae moderately long, AS4:AS2+3=1.2, S2-S4 with sparsely hirsute, S5-S6 almost glabrous, pygidial plate rounded, forewings with 2nd r-m as strong as 1st r-m.

Remarks. The females of L. castor, L. pollux and L. pulvitectum are indistinguishable, although, the three species can be separated on their known distributions: L. pollux and L. castor in northern and southern Western Australia respectively and L. pulvitectum in the eastern states. In many female specimens, the hair tufts have a ``wet`` appearance, adhering to the tergite and are therefore difficult to see. The males of the three species provide useful characters to aid separation.
More Information
Specimen Contact
Museum Victoria
Walker, K.
11/06/2009 10:38 AEST
Last Updated
01/10/2011 17:44 AEST
Walker, K. (2009) Native castor halictid (Lasioglossum (Chilalictus) castor) Updated on 10/1/2011 5:44:30 PM Available online: PaDIL -
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Free for use under the Creative Commons Attribution 3.0 Australia License