A new species and first record of the centipede genus Ribautia (Chilopoda: Geophilomorpha) from Bolivia, with redescription of two poorly known members from the Peruvian Andes

Abstract

Ribautia roigi sp. n. (Chilopoda: Geophilomorpha: Geophilidae) es aquı´ descripta e ilustrada en base a un u´nico especı´men (macho) colectado en Bolivia (Rı´o Vinto, a 75 km de Cochambamba, en ruta a Villa Tunari), ladera oriental de los Andes (selva de Yungas), siendo la presente cita, la primera del ge´nero para este paı´s. Esta nueva especie se caracteriza por tener los o´rganos coxales agrupados en forma de racimo (dos de e´stos en cada coxopleura del u´ltimo segmento pedal), cara´cter que es compartido por otras tres especies Neotropicales del ge´nero (R. andecola Kraus, 1954, R. colcabensis Kraus, 1957 y R. seydi Ribaut, 1923), todas distribuı´das en Peru´ y con las cuales parece estar estrechamente relacionada, siendo aquı´ con e´stas comparada en detalle. R. andecola y R. colcabensis son redescriptas e ilustradas en base al estudio de los especı´menes tipo, brindando caracteres no especificados en las respectivas descripciones originales.

Ribautia roigi sp. n. (Chilopoda: Geophilomorpha: Geophilidae) is here described and illustrated from a single (male) specimen collected in Bolivia (Rio Vinto, 75km from Cochabamba, on road to Villa Tunari), eastern slope of the Andes (Yungas forests), being the first record for the genus in this country. The new species is characterized by having the coxal organs grouped in clusters (two in each coxopleuron of the last leg-bearing segment), this character being shared by three other Neotropical species of the genus, i.e. R. andecola Kraus, 1954, R. colcabensis Kraus, 1957 and R. seydi Ribaut, 1923 (all from Peru), to which it seems to be closely related, and with which it is accordingly compared in detail. R. andecola and R. colcabensis are redescribed and figured after the type specimens, given characters not specified in the original descriptions.