Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/2961
Title: Interstitial fauna of the Galapagos: Porrocystidinae (Platyhelminthes Polycystididae)
Authors: ARTOIS, Tom 
SCHOCKAERT, Ernest 
Issue Date: 1999
Publisher: CENTRO STUDIO FAUNISTICA ECOLOGIA TROPICALI, C N R
Source: TROPICAL ZOOLOGY, 12(2). p. 309-324
Abstract: Three new species, from the Galapagos Isles, of the ill-defined taxon Porrocystidinae Evdonin 1977 are described. Austrorhynchus galapagoensis n. sp. is mainly characterized by the shape of the male accessory organ. The other two species represent new genera: Galapagorhynchus hoxholdi n. gen. n, sp. and Pygmorhynchus pygmaeus n. gen. n. sp. The main characteristics of Galapagorhynchus n. gen. are the presence of hard teeth in the male atrium, the lack of an accessory stylet, the long spermatic duels and the very elongated common genital atrium. Pygmorhynchus n. gen. lacks an accessory stylet, has short but strongly muscular spermatic ducts and has nuclei near the junction of the epithelia of the proboscis sheath and cone. The systematic positions of the three new taxa are discussed, and a brief phylogenetic analysis of the Porrocystidinae is given. Diagnoses of the new taxa are given, and the diagnosis of the subfamily Porrocystidinae is emended.
Notes: Limburgs Univ Ctr, Dept Chem Biol & Geol, Res Grp Zool, B-3590 Diepenbeek, Belgium.Artois, TJ, Limburgs Univ Ctr, Dept Chem Biol & Geol, Res Grp Zool, Univ Campus, B-3590 Diepenbeek, Belgium.
Keywords: Porrocystidinae; Polycystididae; Galapagos; new taxa; phylogeny
Document URI: http://hdl.handle.net/1942/2961
ISI #: 000085356800010
Type: Journal Contribution
Validations: ecoom 2001
Appears in Collections:Research publications

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