Notes on the biology of Oryctes monoceros (OLIV.) A pest of palms in Nigeria

  • D. A. Ukeh Department of Crop Science, University of Calabar, Calabar
  • E. J. Usua Department of Zoology, University of Calabar, Calabar
  • S. B. A. Umoetok Department of Crop Science, University of Calabar, Calabar

Abstract

Studies on the biology of the rhinoceros beetle, Oryctes monoceros Oliv. was conducted in the laboratory. O. monoceros has 3 larval instars. In the mean the egg stage lasted 11, the larval stages 75.6, the pupal stage 15.5 and the adults stage 51.6 days. The mean developmental period from egg to adult for O. monoceros was 145 days. The beetle lives for about 5 months of which between 2-3 months are spent as a larva.

Keywords: Oryctes monoceros, Oviposition, Larvae, Pupation, Moulting.
[Global Jnl Agric Res Vol.2(1) 2003: 33-36]
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eISSN: 1596-2903