Environmental Entomology (1982) 11, 667-669

Gary P. Watterson and Jay D. Stone (1982)
Parasites of blackmargined aphids and their effect on aphid populations in far-west Texas
Environmental Entomology 11 (3), 667-669
Abstract: One primary parasite, Aphelinus perpallidus (Gahan), and five previously unreported secondary (suspected) parasites, Alloxysta schlingeri (Andrews), Aphidencyrtus spp., Chartocerus spp., Dendrocerus spp., and Pachyneuron spp., were identified from black margined aphids, Monellia caryella (Fitch) (Homoptera: Aphididae), in far-west Texas pecan orchards. Aphelinus perpallidus was found in significant numbers, but populations varied greatly among orchards. During most of the growing season, less than 6% of collected M. caryella specimens were parasitized by A. perpallidus, but up to 52% were parasitized in one orchard in October. Other species parasitized <1% of M. caryella populations.
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Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Monellia caryella	Pecan/hickory (Carya)	U.S.A. (mid S)
Aphelinus perpallidus (parasitoid)	Monellia caryella	Pecan/hickory (Carya)	U.S.A. (mid S)