Spilochalcis (spilokalsis)

[NL. (Thomson, 1875), hymenopterous insects, of the family Chalcid i dæ, containing some of the largest species. The hind thighs are greatly enlarged, the abdomen has a long petiole, the thorax is maculate, and the middle tibiæ have spurs. The genus is very widely distributed, and the species destroy many kinds of insects. Some of the smaller Spilochalcis mar iæ , female. (Cro shows natural size.) ones are secondary parasites. S. mar iæ is a common parasite of the large native American silkworms, such as the polyp hem us and cecropia.