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THE LIFE HISTORY OF TOUMEYELLA PINI (KING) (HOMOPTERA: COCCIDAE) IN LOBLOLLY PINE SEED ORCHARDS IN GEORGIA

Published online by Cambridge University Press:  31 May 2012

Stephen R. Clarke ,
Gary L. DeBarr  and
C. Wayne Berisford
Stephen R. Clarke
Affiliation:
USDA Forest Service, southeastern Forest Experiment Station, Forestry Sciences Laboratory, Athens, Georgia, USA30602
Gary L. DeBarr
Affiliation:
USDA Forest Service, southeastern Forest Experiment Station, Forestry Sciences Laboratory, Athens, Georgia, USA30602
C. Wayne Berisford
Affiliation:
Department of Entomology, University of Georgia, Athens, Georgia, USA30602
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Abstract

The striped pine scale, Toumeyella pini (King), had three generations per year in south Georgia. Females developed on snoots and males developed on needles of loblolly pine, Pinus taeda L. Generations overlapped and crawlers were most abundant in May, mid-July to early August, and late October to early November. The average fecundity was 1865 crawlers per female. Parasitism averaged ca. 15%, but the predation rate reached 50%. Coccophagus lycimnia Walker (Hymenoptera: Aphelinidae) was the most common parasitoid reared from both males and females. A pyralid larva, Laetitia coccidivora (Comstock), was a frequent predator of females.

Résumé

La cochenille Toumeyella pini (King) complète trois générations par an au sud de la Georgie. Les femelles se développent sur les pousses et les mâles sur les aiguilles du pin Pinus taeda L. Les générations se chevauchent, les larves actives atteignant leur maximum d’abondance en mai, de la mi-juillet au début août, et de la fin octobre au début novembre. L’incidence de parasitisme est de 15% en moyenne, mais l’incidence de prédation atteint 50%. Coccophagus lycimnia Walker (Hymenoptera : Aphelinidae) est le parasitoïde le plus commun obtenu à la fois des mâles et des femelles de la cochenille. Une larve de la pyrale Laetitia coccidivora (Comstock) s’avère un prédateur commun des femelles.

Type
Articles
Information
The Canadian Entomologist , Volume 121 , Issue 10 , October 1989 , pp. 853 - 860
Copyright
Copyright © Entomological Society of Canada 1989

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