The descriptions of three species of terrestrial oligochaetes, family Glossocolecidae, are added to the catalog of earth-worms of Colombia’s Amazon region: Martiodrilus (Maipure) huitoto sp. nov., M. (Cordilleroscolex) mirania sp. nov.,and Periscolex coreguaje sp. nov.). With these new registries, the earthworms fauna of Colombia now contains 136 spe-cies. A key is included to differentiate species of Periscolex, and several observations are given related to the distribution of species and the presence of earthworms depending on changes in land use.
Two new earthworm species are described, Periscolex malibu sp. nov. (Rhinodrilidae) and Righiodrilus lebrijae sp. nov. (Glossoscolecidae). They were found in relicts of tropical dry forests surrounding wetlands in the southern department of Cesar, located near the Caribbean coast of Colombia. Periscolex malibu sp. nov. is close to P. fuhrmanni Michaelsen, 1913 by the position of both clitellum and tubercula pubertatis, but differs in the extension of the clitellum and in the presence of five pairs of spermathecae. Righiodrilus lebrijae sp. nov is close to R. paolettii Righi, 1984a by the extension of the clitellum, but differs in the extension of the tubercula pubertatis, the extension of the seminal vesicles, the position of the male pores, the arrangements of setae, and the shape of the spermathecae.
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