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FURTHER OBSERVATIONS ON WINTER COCOONS IN CHIRONOMIDAE (DIPTERA)

Published online by Cambridge University Press:  31 May 2012

H. V. Danks  and
Jim W. Jones
H. V. Danks
Affiliation:
Department of Biological Sciences, Brock University, St. Catharines, Ont.
Jim W. Jones
Affiliation:
Department of Biological Sciences, Brock University, St. Catharines, Ont.
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Extract

Winter cocoons have been described in several species of Chironomidae (summary in Danks 1971, table V; see also Madder et al. 1977). The larvae are tightly folded within these closed cocoons in ways more or less characteristic of the species. Usually the walls of the cocoons are thicker than those of the tubes within which larvae are active in summer and less particulate matter is incorporated into them. Most larvae of two species studied earlier in Ottawa (Danks 1971) constructed their winter cocoons only after surface ice had formed.

Type
Articles
Information
The Canadian Entomologist , Volume 110 , Issue 6 , 01 June 1978 , pp. 667 - 669
Copyright
Copyright © Entomological Society of Canada 1978

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References

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