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SOME NEARCTIC SPECIES OF HYDRADEPHAGID WATER BEETLES, NEW AND OLD (Coleoptera)1

Published online by Cambridge University Press:  31 May 2012

Hugh B. Leech
Hugh B. Leech
Affiliation:
California Academy of Sciences, San Francisco
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Extract

A medium sized non-maculate species, allied to and resembling H. strigatus Roberts but more robust; elytra vittate as a result of the blackened strial punctures. Elytra of the female shining.

Male: Length 3.30 to 3.45 mm.; width 1.65 to 1.80 mm. Dorsal surface fulvous; base of head often piceous; large punctures across base of pronotum not blackened, though appearing so at a hasty glance because of a pattern of muscle attachments seen through the clear integuments; elytra non-maculate except for a small subsutural spot on an aggregation of punctures near the apices; punctures of elytral striae 1 to 8 blackened and narrowly annulated, those of 8 and 9 immaculate except a few apically, suture blackened in at least apical half. Ventral surface fulvous, except first three abdominal sternites which are piceous or black.

Type
Articles
Information
The Canadian Entomologist , Volume 80 , Issue 1-12 , January 1948 , pp. 89 - 96
Copyright
Copyright © Entomological Society of Canada 1948

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References

1 Contribution No. 2549, Division of Entomology, Science Service, Department of Agriculture, Ottawa, Canada.