Relationship between Megastigmus suspectus Borr. size and Abies alba Mill. seed size

Silva Fennica 30(1): 77–80

Investigation on the relationship between the size of the Megastigmus suspectus Borr. (Hymenoptera, Torymidae) and the size of Abies alba Mill. seed from which those insects emerged was conducted. The examined insects (n = 46) originated from southern Poland, and were obtained from cones collected in 1993. M. suspectus thorax length was used as an index of adult insect size, because that was correlated with 8 other body measurements. In addition, the diameter of the emergence hole of this insect was measured. All data were log-transformed and analysed using regression analysis. There was no linear correlation between adult size and seed size, using either length of thorax or any of the other 8 body traits tested.

Keywords
Megastigmus suspectus, body size, seed, Abies alba

Addresses
Department of Forest Entomology, Academy of Agriculture, 31-425 Krak—w, Al. 29 Listopada 46, Poland. Fax +48 12 336 245

Received 31 March 1995 Accepted 18 March 1996
ISSN 0037-5330

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