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COMPLEXITIES IN THE NUMBER OF LARVAL INSTARS OF THE BIRCH CASEBEARER IN NEWFOUNDLAND (LEPIDOPTERA: COLEOPHORIDAE)

Published online by Cambridge University Press:  31 May 2012

Arthur G. Raske
Arthur G. Raske
Affiliation:
Newfoundland Forest Research Centre, Canadian Forestry Service, St. John's, Newfoundland
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Abstract

The birch casebearer, Coleophora fuscedinella Zeller, has five larval instars in northeastern North America, but commonly only four in insular Newfoundland. The occurrence of four larval instars in Newfoundland represents the omission of either the third or the fourth instar. Local Newfoundland populations may have five larval instars, but the late-developing larvae of these populations have only four larval instars. Head capsule width can be used to identify instars but case characteristics are recommended because the bimodality of third instar head widths can cause confusion.

Type
Articles
Information
The Canadian Entomologist , Volume 108 , Issue 4 , April 1976 , pp. 401 - 405
Copyright
Copyright © Entomological Society of Canada 1976

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References

Carroll, W. J. 1956. History of the hemlock looper, Lambdina fiscellaria fiscellaria (Guen.), (Lepidoptera: Geometridae) in Newfoundland, and notes on its biology. Can. Ent. 88: 587–599.CrossRefGoogle Scholar
Cochran, S. G. 1974. Biology and control of the birch casebearer in Newfoundland. M.Sc. Thesis, McGill University, Que.126 pp.Google Scholar
Coshan, P. F. 1974. The biology of Coleophora serratella (L.) (Lepidoptera: Coleophoridae). Trans. R. ent. Soc. Lond. 126: 169–188. [C. fuscedinella = C. serratella.]CrossRefGoogle Scholar
Dyar, H. G. 1890. The number of molts of lepidopterous larvae. Psyche (Camb.) 5: 420–422.CrossRefGoogle Scholar
de Gryse, J. J. and Schedl, K.. 1934. An account of the eastern hemlock looper on hemlock with notes on allied species. Scient. Agric. 14: 523–539.Google Scholar
Gillespie, A. M. 1932. The birch casebearer in Maine. Maine For. Serv. Bull. 7.Google Scholar
Guèvremont, H. et Juillet, J.. 1974. Recherches sur la dynamique des populations naturelles de Coleophora fuscedinella Zeller (Lépidoptères: Coleophoridae) dans la région de Sherbrooke, Quebec. Phytoprotection 55: 121–134.Google Scholar
Kemner, N. A. 1917. Björksäckmalen (Coleophora fuscedinella) och dess uppträdante ären 1915–1917. Medd. Centr. Anst. Försöksv. Jordbr. Stockh., Ent. Adveln. 161: 1–27.Google Scholar
Salman, K. A. 1929. Notes on the immature stages and biology of a birch casebearer. Ann. ent. Soc. Am. 22: 480–488.CrossRefGoogle Scholar