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Identification |
D. heterulkei heterulkei is characterized by bright yellow markings. D. heterulkei fraternum Timberlake, 1943, the only other subspecies, has cream to white maculations. Tergum VII (fig. 159) of the male of heterulkei is somewhat truncate as in ulkei and pla-tyurum, but the emarginations separating the median lobe are generally deeper and the apex of the median lobe more acute in heterulkei. The female of heter-ulkei is distinguished from the similar females of parvum and subparvum by having the interstitial lines between punctures of the mesoscutum deeply sculptured and thus appearing dull.
Thirty-six males and 28 males of D. heterulkei heterulkei were found distributed in California from the Cascade Mountains down the Sierra Nevada to Tulare County. D. heterulkei iraternum is found in the mountains of Arizona, New Mexico, and Texas.
No nests of D. heterulkei have been observed and infrequent host plant records are limited to the Compositae.
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Updated: 2024-04-24 21:33:49 gmt
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