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Chapter Summary

Chrysotoxum are wasp mimics, and often found in association with open woodlands. They appear near the ground in the vegetation (e.g. C. arcuatum), on flowers (e.g. C. bicinctum), on leaves of shrubs and trees (e.g. C. cautum), and high up in trees (e.g. C. octomaculatum). The precise feeding habits of the larvae of Chrysotoxum are unknown. The larvae live in the ground, associated with ant nests and are presumably predators of root aphids. There are reports of females ovipositing near ant nests. C. bicinctum larvae have been reared on pea aphids in the laboratory, supporting the predatory life history. Chrysotoxum contains broad-bodied, black and yellow hoverflies with long antennae. The key is based on Van der Goot, Sack, Seguy, Smit, Renema and Van Aartsen, and Speight. The names C. festivum and C. arcuatum have been preserved by the Zoological Code Commission.

Keywords: C. arcuatum; C. bicinctum; C. cautum; Chrysotoxum



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