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Chalcidoid parasitoids of overwintered pupae of Hyphantria cunea (Lepidoptera: Arctiidae) in hazelnut plantations of Turkey's central Black Sea region

Published online by Cambridge University Press:  03 January 2012

G.T. Sullivan*
Affiliation:
Suleyman Demirel University, Faculty of Agriculture, Department of Plant Protection, 32260 Isparta, Turkey; Ondokuz Mayis University, OYDEM, 55139 Samsun, Turkey
I. Karaca
Affiliation:
Suleyman Demirel University, Faculty of Agriculture, Department of Plant Protection, 32260 Isparta, Turkey
S.K. Ozman-Sullivan
Affiliation:
Ondokuz Mayis University, Faculty of Agriculture, Department of Plant Protection, 55139 Samsun, Turkey
Z.Q. Yang
Affiliation:
Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Haidian District, Beijing 100091, China
*
1Corresponding author (e-mail: [email protected]).

Abstract

Overwintered pupae of fall webworm, Hyphantria cunea (Drury), were collected from 38 hazelnut (Corylus avellana L. (Betulaceae)) plantations in Samsun province, Turkey, in 2008 and 2009. Four chalcidoid (Hymenoptera: Chalcidoidea) species were reared: Chouioia cunea Yang (Eulophidae), Conomorium amplum (Walker), Dibrachys boarmiae (Walker), and Psychophagus omnivorus (Walker) (Pteromalidae). Overall parasitism was 11.97% and 4.84% for 2008 and 2009, respectively; species richness on sites ranged from one to three species. Psychophagus omnivorus parasitised 6.7% of all pupae and comprised 79% of chalcidoid rearings. Chouioia cunea had the highest clutch average (117) and female:male ratio (44.5:1). Records of Chouioia cunea and Conomorium amplum are new for Turkey and, except for P. omnivorus, all parasitoids are new records for H. cunea in Turkey.

Résumé

Nous avons prélevé des nymphes de la chenille à tente estivale, Hyphantria cunea (Drury), qui ont passé l'hiver, dans 38 plantations d'aveliniers (Corylus avellana L. (Betulaceae)) dans la province de Samsun, Turquie, en 2008 et 2009. Nous avons obtenu par élevage quatre espèces de chalcidoïdes (Hymenoptera : Chacidoidea) Chouioia cunea Yang (Eulophidae), ainsi que Conomorium amplum (Walker), Dibrachys boarmiae (Walker) et Psychophagus omnivorus (Walker) (Pteromalidae). Le parasitisme global était de 11,97 % en 2008 et de 4,84 % en 2009; la richesse spécifique variait d'une à trois espèces sur les sites. Psychophagus omnivorus parasitait 6,7 % de toutes les nymphes et représentait 79 % des chacidoïdes obtenus par élevage. Chouioia cunea possédait la ponte moyenne la plus importante (117) et le rapport femelles : mâles le plus élevé (44,5:1). C'est la première fois que Chouioia cunea et Conomorium amplum sont signalés en Turquie; c'est aussi la première fois que toutes les espèces, à l'exception de P. omnivorus, sont récoltées sur H. cunea en Turquie.

[Traduit par la Rédaction]

Type
Biodiversity & Evolution
Copyright
Copyright © Entomological Society of Canada 2011

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