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Frass-drop Studies of Larvae of Neodiprion americanus banksianae Roh. and N. lecontei (Fitch) (Hymenoptera: Diprionidae)1

Published online by Cambridge University Press:  31 May 2012

G W. Green  and
A. S. deFreitas
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Extract

Among others, Schwerdtfeger, 1931, Gosswald, 1934, and Morris, 1949, have used frass-drop samples as indirect measurements of the density of forest insect populations with some success. The method has also been used to assess the effects of various insecticides on the feeding of treated larvae (Rhumbler, 1929; Schwerdtfeger, 1930) and to study the influence of weather upon the feeding and development of forest insects (Monro, 1935).

Type
Articles
Information
The Canadian Entomologist , Volume 87 , Issue 10 , October 1955 , pp. 427 - 440
Copyright
Copyright © Entomological Society of Canada 1955

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References

REFERENCES

Gosswald, K. 1934. Uber die Frasstätigkeit von Forstschädlingen unter dem Einfluss von Altersunterscheiden und der Einwirkung verschiedner Temperature und Luftfeuchtigkeit und ihre praktische und physiologische Bedeutung. Z. angew. Ent. 21: 183–332.CrossRefGoogle Scholar
Green, G. W. 1954. Humidity reactions and water balance of larvae of Neodiprion americanus banksianae Roh. and N. lecontei (Fitch) (Hymenoptera: Diprionidae). Canad. Entom. 86(6): 261–274.Google Scholar
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