Bulletin of Entomological Research

Research Article

Trichogramma zahiri (Hymenoptera: Trichogrammatidae) an egg parasitoid of the rice hispa Dicladispa armigera (Coleoptera: Chrysomelidae) in Bangladesh

A. Polaszeka1a3 c1, M.F. Rabbia2, Z. Islama2 p1 and Y.M. Buckleya4

a1 Department of Entomology, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK

a2 Bangladesh Rice Research Institute, Gazipur, Dhaka, Bangladesh

a3 Department of Biological Sciences, Imperial College of Science, Technology and Medicine, Ascot, Berks, SL5 7PY, UK

a4 NERC Centre for Population Biology, Imperial College of Science, Technology and Medicine, Ascot, Berks, SL5 7PY, UK

Abstract

Trichogramma zahiri Polaszek sp. n. is described from Bangladesh. It has been collected at several localities from the major pest of rice Dicladispa armigera (Olivier) on which it has an important controlling impact. Trichogramma zahiri is compared with known Trichogramma species from the region, and diagnostic differences are presented. Data on developmental period, adult longevity, egg-laying frequency, host egg age preference and seasonal parasitism rate are presented and discussed. Other records of parasitoids of D. armigera are briefly reviewed and discussed.

(Accepted July 23 2002)

Correspondence:

c1 *Fax: +44 (0)207 942 5229 E-mail: ap@nhm.ac.uk

p1 International Rice Research Institute, Los Baûos, The Philippines.