Gill parasites of the genus Cichlidogyrus Paperna, 1960 (Monogenea, Ancyrocephalidae) from Tilapia guineensis (Bleeker, 1862), with descriptions of six new species

Abstract

A study of gill parasites of Tilapia guineensis (Bleeker, 1862) (Cichlidae) from different locations in West Africa (Senegal, Guinea, the Ivory Coast and the Congo) revealed the presence of twelve species of Cichlidogyrus Paperna, 1960 (Monogenea). Six have been recorded previously from T. zillii (Gervais, 1848) or Tristamella simonis (Günther, 1864) and six are considered new species: C. agnesi n. sp., C. bilongi n. sp., C. gallus n. sp., C. flexicolpos n. sp., C. louipaysani n. sp. and C. vexus n. sp. In the first three species cited, we report the presence of an auxiliary plate in the male copulatory complex which is characteristic of the species C. aegypticus Ergens, 1981, a parasite of Tilapia zillii. © 1995 Kluwer Academic Publishers.