Scientific name - Taxonomic position - Diagnosis - Images - Distribution - Hosts / Biology - References

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.

Hosts / Biology

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.