Scientific name
Dirhinus anthracia Walker
Taxonomic position
Hymenoptera: Chalcidoidea: Chalcididae
Diagnosis
Body robust, dorsum dark brown to black with strong metallic coppery reflections; antennae and first two pairs of legs reddish brown, last pair or legs blackish, except tarsi reddish brown. Head with a pair of horn-like anterior projections, each horn outside of apex with a distinct notch; anterior and dorsal edges of horns converging in acute to right angle, anterior and lateral edges forming acute angle of about 60 degrees. Propodeum with a median areola with convex sides. First abdominal tergite with longitudinal striae in anterior half reaching up to about one-third length. Hind femora greatly enlarged and swollen.
Head, dorsal view
Images
Adult, dorsal view
Adult, ventral view
Distribution
Throughout India. Pakistan.
Biology / Hosts
Parasitic on synathropic flies (Diptera: Muscidae, Sarcophagidae, Calliphoridae) and other dipterous hosts such as Tephritidae and Tachinidae; Lepidoptera (Narendran, 1989). Mass produced and used augmentatively in the biological control of Indian Uzi fly, Exorista bombycis, a pest of Bombyx
mori.
References
- Boucek, Z. and Narendran, T.C. 1981. Indian chalcid wasps (Hymenoptera) of the genus Dirhinus parasitic on synanthropic and other Diptera. Systematic Entomology, 6:
229-251.
- Narendran, T.C. 1989. Oriental Chalcididae (Hymenoptera: Chalcidoidea). Zoological Monograph, Department of Zoology, University of Calicut, Kerala. 440 p.
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