Bee
of the Month (March): Halictus (Seladonia) pinguismentus Janjic
and Packer
Comments: Halictus (Seladonia) pinguismentus Janjic and Packer,
is a new species of Halictine bee known only from four females collected
from Guadeloupe Island, off the west coast of Baja
California
approximately 100 years ago. Diagnostic features include the genal angle
of the larger two of the four specimens and the long mandible with the
subapical tooth somewhat concave. Size and morphological variation among
the four specimens is suggestive of caste differences as found in some
of this species' close relatives such as H. (S. ) hesperus. Guadeloupe
Island is an uninhabited, difficult of access locality which has been
substantially damaged by goats. It is possible that this species is
extinct.
References:
Brooks, R.W. and D.W. Roubik. 1983. A halictine bee with distinct castes:
Halictus hesperus (Hymenoptera: Halictidae) and its bionomics in Central
Panama. Sociobiology 7:263-282.
Janjic, J. and L. Packer. 2001. New descriptions of Halictus (Seladonia)
from the New World. Journal of Hymenoptera Research, in press.