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REARING THE EGG PARASITE OOENCYRTUS ENNOMOPHAGUS (HYMENOPTERA: ENCYRTIDAE) ON EGGS OF CLOSTERA INCLUSA (LEPIDOPTERA: NOTODONTIDAE) KEPT BELOW FREEZING

Published online by Cambridge University Press:  31 May 2012

A. T. Drooz  and
J. D. Solomon
A. T. Drooz
Affiliation:
USDA Forest Service, Southeastern Forest Experiment Station, Forestry Sciences Laboratory, Research Triangle Park, North Carolina 27709
J. D. Solomon
Affiliation:
USDA Forest Service, Southern Forest Experiment Station, Southern Hardwoods Laboratory, Stoneville, Mississippi 38776
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The preservation of host material in a state suitable for successful development of beneficial parasite or predator species is desirable for the mass culture of entomophagous species. Thus, Coppel and Mertins (1977) report the coddling of sawfly cocoons, and Fedde et al. (1979) chilled host eggs to keep them in a susceptible state for the egg parasite Telenomus alsophilae Viereck. Such techniques are also valuable to assure continuous rearing of parasites or predators during shortages of hosts.

The latter situation pertained while we were studying factitious hosts of the thelyotokous, multivoltine egg parasite Ooencyrtus ennomophagus Yoshimoto (1975). This parasite cannot develop in embryonated eggs; therefore it is essential to hold hosts in the unembryonated condition. Faced with the loss of the typical host for 0. ennomophagus, the univoltine elm spanworm, Ennomos subsignarius (Hübner), we found that eggs of the multivoltine pipla tentmaker, Clostera inclusa (Hübner), would suffice. Field populations of the tentmaker crashed in 1979, leaving us dependent upon a small field-cage rearing of this insect for experimentation.

Type
Articles
Information
The Canadian Entomologist , Volume 112 , Issue 7 , 01 July 1980 , pp. 739 - 740
Copyright
Copyright © Entomological Society of Canada 1980

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References

Coppel, H. C. and Mertins, J. W.. 1977. Biological Insect Pest Suppression. Springer-Verlag, New York. 314 pp.Google Scholar
Fedde, G. F., Fedde, V. H., and Drooz, A. T.. 1979. Biological control prospects of an egg parasite, Telenomus alsophilae Viereck. pp. 123–127 in Current Topics in Forest Entomology. Selected papers from the XV Int'l Cong. of Ent. U.S. Dep. Agric., For. Serv., Gen. Tech. Rep. WO–8. 174 pp.Google Scholar
Ticehurst, M. and Allen, D. C.. 1973. Notes on the biology of Telenomus coelodasides (Hymenoptera: Scelionidae) and its relationship to the saddled prominent, Heterocampa guttivitta (Lepidoptera: Notodontidae). Can. Ent. 105: 1133–1143.CrossRefGoogle Scholar
Yoshimoto, C. M. 1975. A new species of Ooencyrtus (Hymenoptera: Chalcidoidea, Encyrtidae) reared from the elm spanworm, Ennomos subsignarius (Lepidoptera: Geometridae). Can. Ent. 107: 833–835.Google Scholar