Heteronychus sanctae-helenae Blanch. H. arator Burm., the Black Maize Beetle) is a well-known pest of maize, wheat, turf and occasionally of potatoes in Southern Africa, and an introduced pest in Australia.
Zophodes fitzsimonsi Koch, pl. 2: a-c, pl. 3: d; text figs. 1-5 and 8 The descriptionption is based on a larva 22 mm long, 2.1 mm broad, head-capsule 1.9 mm wide (pl. 2: a). Body almost cylindrical of sub equal width, fairly strongly sclerotized, segments transverse to sub quadrate, not constricted between segments; cuticle glabrous of ivory to light umber colour, head, pronotum and ninth abdominal tergum darker; ninth abdominal tergum ovate, ventrally almost completely closed but for a basal aperture for ninth abdominal sternum, four small apical setae at equal distances, surface covered with pores.
There are three species of Cobboldiinae known, all of which parasitize elephants exclusively. The larval stages are very similar while the imagines show such important differences that each species has been placed into a distinct genus. The first species studied was that from the Indian Elephant (Elephas maximus Linnaeus), and is known to-day as Cobboldia elephantis (Steel). The two other species occur in the African Elephant (Loxodonta africana (Blumenbach) and are named Platycobboldia loxodontis (Brauer) and Rodhainomyia roverei (Gedoelst), see Zumpt, 1962.