Titre du document / Document title

Biology of Diastrophus nebulosus (hymenoptera: Cynipidae) and its parasitoid/inquiline complex in galls on Rubus flagellaris (rosaceae)

Auteur(s) / Author(s)

GORDINIER H. C. ;

Résumé / Abstract

Rubus flagellaris patches occasionally harbor colonies of compound stemgalls initiated by the cynipid, Diastrophus nebulosus. These isolated colonies host a parasitoid/inquiline complex made up of five principal and threeincidental chalcidoid species and one cynipid inquiline. Over 1-2 seasons, parasitoid/ inquiline infestation reduced primary host populations to lows of 2-0% in some colonies. Despite heavy parasitism in most colonies, dispersal of D. nebulosus out of infested colonies resulted in a survival rate of 22%. Among parasitoids, a new species, Eurytoma rubrigalla, was revealed along with new records for Eupelmella vesicularis and an unidentified Habrocytus species. Immature stages and life histories of D. nebulosus and members of its parasitoid/inquiline complex are illustrated and described with notes on gall genesis and development. Courtship and mating is summarized for Eurytoma diastrophi and arrhenotoky is here first reported for a Nearctic species in Diastrophus.

Revue / Journal Title

Great Lakes entomologist   ISSN 0090-0222   CODEN GRLEAG 

Source / Source

2003, vol. 36, n^o3-4, pp. 129-151 [23 page(s) (article)]

Langue / Language

Anglais

Editeur / Publisher

Michigan Entomological Society, East Lansing, MI, ETATS-UNIS  (1972) (Revue)

Localisation / Location

INIST-CNRS, Cote INIST : 13675, 35400012671955.0050