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THE METHOD BY WHICH LARVAE OF DASINEURA BALSAMICOLA (LINTNER) (DIPTERA: CECIDOMYIIDAE) GAIN ACCESS TO THE INTERIOR OF GALLS INDUCED BY PARADIPLOSIS TUMIFEX GAGNÉ (DIPTERA: CECIDOMYIIDAE)

Published online by Cambridge University Press:  31 May 2012

Hamdi Akar Jr.  and
E.A. Osgood
Hamdi Akar Jr.
Affiliation:
Entomology Department, University of Maine, Orono, Maine, USA04469
E.A. Osgood
Affiliation:
Entomology Department, University of Maine, Orono, Maine, USA04469
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Extract

The balsam gall midge, Paradiplosis tumifex Gagné, oviposits in newly opening buds of balsam fir. Eggs hatch in 2–3 days. First-instar larvae crawl to and usually settle on the proximal adaxial surface of developing needles. Needle tissues near the larva proliferate, and the larva appears to sink into the needle as the gall forms around the feeding site (West and Shorthouse 1982). Another gall midge, Dasineura balsamicola (Lintner), is an inquiline in the gall of P. turnifex. Its eggs are laid at approximately the same time and place as those of P. tumifex, and larvae of both species are often found in the same gall.

Type
Articles
Information
The Canadian Entomologist , Volume 119 , Issue 4 , April 1987 , pp. 395 - 396
Copyright
Copyright © Entomological Society of Canada 1987

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References

Osgood, E.A., and Gagné, R.J.. 1978. Biology and taxonomy of two gall midges (Diptera: Cecidomyiidae) found in galls on balsam fir needles with description of a new species of Paradiplosis. Ann. ent. Soc. Am. 71: 85–91.CrossRefGoogle Scholar
Shorthouse, J.D., and West, R.J.. 1986. Role of the inquiline Dasineura balsamicola (Diptera: Cecidomyiidae) in the balsam fir needle gall. Proc. ent. Soc. Ont. In press.Google Scholar
West., R.J., and Shorthouse, J.D.. 1982. Morphology of the balsam fir needle gall induced by the midge Paradiplosis tumifex (Diptera: Cecidomyiidae). Can. J. Bot. 60: 131–140.Google Scholar