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A New Species of Gerris F. from Yukon and Alaska (Hemiptera: Gerridae)

Published online by Cambridge University Press:  31 May 2012

Leonard A. Kelton
Leonard A. Kelton
Affiliation:
Entomology Research Institute, Research Branch, Canada Department of Agriculture, Ottawa
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Extract

Two species that formerly were confused in the literature with Gerris rufoscutellatus Latreille are G. notabilis Drake and Hottes (1925) from western North America, and G. dissortis Drake and Harris (1930) from eastern North America. Drake and Harris (1934) concluded that Palaearctic rufoscutellatus did not occur in America.

The species described herewith as Gerris nearcticus n. sp. is similar to notabilis, dissortis and rufoscutellatus in general appearance and coloration. However, the males are readily separated from notabilis and dissortis by the prominent median keel on the first genital segment (Figs. 1, 2). Another Nearctic species with a similar median keel is G. conformis (Uhl.), but it has a very long first antennal segment, which is longer than segments two and three together. The first antennal segment of nearcticus is much shorter than segments two and three together.

Type
Articles
Information
The Canadian Entomologist , Volume 93 , Issue 8 , August 1961 , pp. 663 - 665
Copyright
Copyright © Entomological Society of Canada 1961

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References

Drake, C. J., and Hottes, F. C.. 1925. Four undescribed species of waterstriders (Hemip.-Gerridae). Ohio Jr. Sc. 25: 46.Google Scholar
Drake, C. J., and Harris, H. M.. 1930. Wrongly identified American waterstriders. Bull. Brooklyn Ent. Soc. 25: 145.Google Scholar
Drake, C. J., and Harris, H. M.. 1934. The Gerrinae of the Western Hemisphere (Hemiptera). Ann. Carnegie Mus. 23: 181.CrossRefGoogle Scholar