n African Entomology - Predation by Afrotropical Asilidae (Diptera) : an analysis of 2000 prey records

Volume 14, Issue 2
  • ISSN : 1021-3589


Two thousand afrotropical asilid prey records, databased by the Natal Museum, are analysed. The key orders of arthropods preyed upon are, in order of importance, Hymenoptera, Diptera, Coleoptera, Orthoptera, Hemiptera, and Lepidoptera, that together accounted for 96%of records. Insect families with sufficient data to warrant special mention are: Coleoptera (Scarabaeidae), Diptera (Asilidae, Bombyliidae, Calliphoridae, Muscidae, Tabanidae, Tipulidae, Syrphidae, Tachinidae, Empidae), Hemiptera (Cicadidae, Cicadellidae, Lygaeidae, Pentatomidae, Cercopidae), Hymenoptera (Formicidae, Apidae, Halticidae, Megachilidae), Orthoptera (Acrididae). Asilid genera with sufficient data to warrant special attention, are: Apocleinae (), Dasypogoninae (), Laphriinae (), Laphystiinae (), Leptogastrinae (), Stenopogoninae (), Trigonomiminae (). A number of genera appear to be specialist feeders - on Hemiptera, on Araneida, on Scarabaeidae and on . Female asilids generally outnumber males 1.5 to 1 in records of prey capture, but the extent of this imbalance varies from one subfamily to another.

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