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An Application of the Linear Discriminant Function to Insect Taxonomy1

Published online by Cambridge University Press:  31 May 2012

R. S. Bigelow  and
C. Reimer
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Extract

This paper is a report an the applicability of the linear discriminant function to insect taxonomy. Mather and Dobzhansky (1939) and Cox (1953) applied this technique to problems in insect taxonomy, but the former study was concerned with detecting a difference between samples, and the latter used the function only secondarily. In this paper, discriminant functions were calculated from several combinations of linear characters in males of two closely related species of grasshopper, Arphia pseadonietana (Thomas) and A. conspersa Scudder, to determine: (a) whether a reliable criterion could be found for relatively inexperienced workers to determine individual specimens with a predictable degree of precision; and (b) which characters, or combination of characters, would provide the most reliable criteria.

Type
Articles
Information
The Canadian Entomologist , Volume 86 , Issue 2 , February 1954 , pp. 69 - 73
Copyright
Copyright © Entomological Society of Canada 1954

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References

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Hebard, M. 1936. Orthoptera of North Dakota. North Dakota Agr. Coll. Agr. Expt. Sta. Tech. Bull. 284: 1–66.Google Scholar
Mather, K., and Dobzhansky, T.. 1939. Morphological differences between the “races” of Drosophila pseudoobscura. Amer. Nat. 73: 5–25.CrossRefGoogle Scholar