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Differential Growth as Evidence of the Relationship of Monochamus notatus (Drury) and M. scutellatus (Say) (Coleoptera: Cerambycidae)1, 2

Published online by Cambridge University Press:  31 May 2012

L. M. Gardiner
Affiliation:
Forest Insect Laboratory, Sault Ste. Marie, Ont.

Extract

Monochamus notatus (Drury) and M. scutellatus (Say) are both common wood-boring beetles in the coniferous forests of eastern Canada. The two species are usually separated on the basis of colour. The first is dark brown with lighter brown elytra, and is covered with white and brown pubescence, while the second , is typicaliy shining black. The scutellum of each bears a dense white pubescence which, in the case of M. notatus, is divided by a bare median line. Such a line also occurs in M. scutellatus but is usually incomplete. The writer has found that the presence or absence of a fringe of white hair around the compound eye constitutes the most consistent anatomical difference between the two species, it being present only in M. notatus. The elytra of the females of both species are generally marked with elongate spots. Body length is also used to separate the two species, but no clear-cut difference in length ranges occurs; instead, there is considerable overlap.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1954

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References

Huxley, J. S. 1932. Problems of relative growth. Methuen and Co., London.Google Scholar
Huxley, J. S. and Teissier, G.. 1936. Terminology of relative growth. Nature 137: 780.CrossRefGoogle Scholar
Newcombe, C. L. 1949. A method for studying growth in different groups of arthropods. Science 109: 8485.CrossRefGoogle ScholarPubMed
Reid, J. A. 1942. The relative sizes of different parts in beetles of the genus Laemophloeus (Coleopt: Cucujidae). Proc. R. Ent. Soc. Lond. (A) 17: 1926.Google Scholar
Richards, O. W. and Kavanagh, A. J.. 1945. The analysis of growth and form. In Essays on growth and form presented to D'Arcy Wentworth Thompson, p. 188. (Clark, W. E. LeGros and Medawar, P. B., editors) Oxford Univ. Press.Google Scholar
Thompson, D'Arcy W. 1917. On growth and form. Cambridge Univ. Press.CrossRefGoogle Scholar