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Some new species of Haplotaxidae (Oligochaeta) from Guinea and remarks on the history of the family

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Abstract

Three new species of Haplotaxidae collected by Dr. A. Villiers in a cave near Kindia, Guinea, are described. One species belongs to the genus Metataxis Righi, 1985 (M. carnivorus sp. nov.) which is distributed in Western Africa and Eastern America. Another new species is similar to Lycodrilus kraepelini Michaelsen, 1914 incertae sedis: a new genus Villiersia is proposed for both species (V. guanivora sp. nov., V. kraepelini nov. comb.).

A third species, of which only immature specimens are available, is tentatively attributed to the genus Haplotaxis: it is remarkable because of its peculiar setae and commissural vessels (H. villiersi sp. nov.).

The three species appear to feed on bat guano and, occasionally, on aquatic arthropods.

Metataxis, Tiguassu and Villiersia belong to the section of Haplotaxidae endowed with paired sperm sacs and ovisacs.

The relations of Haplotaxidae with other families are discussed and it is suggested that the passage from the haplotaxid condition to that of sparganophilids and more advanced lumbriciforms is connected to a change of reproductive strategy and to an enhanced metabolism.

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  1. Dipartimeto di Biologia, II Università di Roma - Tor Vergata, Via O. Raimondo, I-00173, Roma, Italy

    Pietro Omodeo

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  1. Pietro Omodeo
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Omodeo, P. Some new species of Haplotaxidae (Oligochaeta) from Guinea and remarks on the history of the family. Hydrobiologia 155, 1–13 (1987). https://doi.org/10.1007/BF00025626

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