Parasitism of gypsy moth (Lepidoptera: Lymantriidae) pupae on the Delmarva Peninsula with emphasis on Coccygominus disparis (Hymenoptera: Ichneumonidae)

Collections of gypsy moth pupae were made on the Delmarva Peninsula during 1989-1994, for the purpose of recovering the recently introduced pupal parasite Coccygomimus disparis (Viereck). Habitats sampled included forests and woodlands, residential forest openings, parks or small woodlots within res...

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Bibliographic Details
Published in:Journal of economic entomology 1997-12, Vol.90 (6)
Main Authors: Fuester, R.W. (Beneficial Insects Introduction Research, USDA, ARS, Newark, DE.), Sandridge, P.T, Dill, N.H, McLaughlin, J.M, Peiffer, R.A, Taylor, P.B, Sigmon, J.O.D, Newlon, C.J
Format: Article
Language:English
Subjects:
BIOLOGICAL CONTROL
BRACHYMERIA INTERMEDIA
CONTROL BIOLOGICO
DELAWARE
DISTRIBUCION GEOGRAFICA
DISTRIBUTION GEOGRAPHIQUE
ENVIRONMENTAL TEMPERATURE
GEOGRAPHICAL DISTRIBUTION
HABITAT
HABITATS
INSECTE NUISIBLE
INSECTOS DANINOS
LLUVIA
LUTTE BIOLOGIQUE
LYMANTRIA DISPAR
MARYLAND
MORTALIDAD
MORTALITE
MORTALITY
PARASETIGENA SILVESTRIS
PARASITE
PARASITES
PARASITISM
PARASITISME
PARASITISMO
PARASITOIDE
PARASITOIDES
PARASITOIDS
PARASITOS
PEST INSECTS
PIMPLA
PIMPLA DISPARIS
PLUIE
PUPAE
PUPAS
PUPE
RAIN
TACHINIDAE
TEMPERATURA AMBIENTAL
TEMPERATURE AMBIANTE
VIRGINIA
VIRGINIE
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Summary:Collections of gypsy moth pupae were made on the Delmarva Peninsula during 1989-1994, for the purpose of recovering the recently introduced pupal parasite Coccygomimus disparis (Viereck). Habitats sampled included forests and woodlands, residential forest openings, parks or small woodlots within residential areas, and residences in suburban areas. This species was recovered in all regions of the peninsula, but it did not seem to be associated with any particular habitat. Parasitism was usually low, 1%, but averaged 4.5% in 1990. Levels of parasitism by this species did not seem to be affected by host density, habitat, or latitude. Discriminant analysis suggested that sample size, minimum temperature the previous December, minimum temperature the previous February, June rainfall and site location (upper or lower peninsula) were the most important factors affecting recoveries of this species. Moth emergence was generally high, averaging 54%. Other sources of mortality (average percentages) were desiccation (16.6%), disease (14.4%), parasitism by other species (3.8%), and unknown causes (9.8%)
ISSN:0022-0493
1938-291X