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THE MALES OF UROCERUS ALBICORNIS F. AND U. FLAVICORNIS F. (HYMENOPTERA: SIRICIDAE)*

Published online by Cambridge University Press:  31 May 2012

O. Peck
O. Peck
Affiliation:
Ottawa, Ont.
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Extract

The females of these two species are markedly different in colour, yet the males resemble each other so closely that Bradley (1913) was unable to distinguish between them. Waterston (is Chrystal, 1928) separated the males by the proportions of the hind metatarsus ; that of U. albicornis F. was “barely five times as long as broad,” while in U. flavicornis F. the metatarsus was “nearly seven times as long as broad.” However, Waterston had but two males of one species, and the metatarsal proportions vary intraspecifically ; on this account, the value of the character cannot be determined without a long series.

Type
Articles
Information
The Canadian Entomologist , Volume 69 , Issue 12 , December 1937 , pp. 275 - 276
Copyright
Copyright © Entomological Society of Canada 1937

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References

REFERENCES

J. C., Bradley 1913. The Siricidae of North America. Jour. Ent. Zool. (Claremont, Calif.) 5 : 1–30.Google Scholar
R. N., Chrystal 1928. The Sirex wood-wasps and their importance in forestry. Bull. Ent. Res. 19: 219–234.Google Scholar