Comprehensive Description

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General Description

This species is black with yellow markings; size between 10 mm and 15 mm. Head: the malar space is below than half as long as the penultimate antennal segment; the occipital carina is incomplete; the ventral part of the scape is yellow opposite the dorsal part of the scape is black. Metasoma: the metasomal tergites are covered with long straight hairs; the central black region of the apex of the second gastral tergum is pointed; male aedeagus with saddle-shaped portion. In some locations the male exhibits two different abdominal color patterns: a xanthic phase with more black than yellow and a melanic phase with more yellow than black (Miller 1961, VanDyk 2003).

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Source: University of Alberta Museums

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