Scientific name

Amitus spp. Foerster

Taxonomic position

Hymenoptera: Platygastroidea: Platygastridae

Diagnosis

Body dark brown to black, dorsoventrally flattened with long wings. Head from above distinctly transverse, opisthognathous in lateral view. Female antenna appearing to be 8-segmented, with abrupt, ovoid to spindle-shaped club actually comprising three-segments, which appear to be fused, sometimes club appears to have 2 faint traces of sutures. Male antenna 10-segmented. Abdomen short, subsessile, broad, nearly as long as wide; second segment largest of all; tergite 1 strongly trapezoidal-transverse, tergite 2 with series of striae anterolaterally. Fore wing with long marginal fringe of hairs, devoid of venation except for a rudimentary submarginal vein in basal part. Legs long and slender, with tibial spur formula 1-1-1, fore tibial spur distinctly bifid; tarsi 5-segmented in all pairs of legs.

Antenna in female  Antenna in male Antenna - female (left) and male (right)
Fore wing in Amitus Forewing

Images

Adult, dorsal view  lateral view   Adult - dorsal, lateral view (1 and 2) and adult in profile (3)
thorax, dorsal view  thorax, dorsal view Thorax and gaster, dorsal view

Distribution

Almost cosmopolitan. Some species are nearly cosmopolitan in distribution due to introductions.

Biology / Hosts

All the known species of Amitus are parasitoids of whiteflies (Hemiptera: Aleyrodidae). Amitus aleurolobi Mani is a parasitoid of Aleurolobus barodensis in India.

Reference

  • Mani, M.S. & Sharma, S.K. 1982. Proctotrupoidea (Hymenoptera) from India: A Review. Oriental Insects, 16(2): 135-258.