Otostephanos (Rotifera, Bdelloidea, Habrotrochidae) with the description of two new species

0425434 - ÚŽFG 2014 RIV GB eng J - Journal Article
Iakovenko, N. - Kašparová, Eva - Plewka, M. - Janko, Karel
Otostephanos (Rotifera, Bdelloidea, Habrotrochidae) with the description of two new species.
Systematics and Biodiversity. Roč. 11, č. 4 (2013), s. 477-494. ISSN 1477-2000. E-ISSN 1478-0933
R&D Projects: GA AV ČR KJB600450903
Institutional support: RVO:67985904
Keywords : macrotrachela Quadricornifera rotifera * Bdelloid taxonomy * biodiversity
Subject RIV: EG - Zoology
Impact factor: 2.153, year: 2013

We present a morphological feature-based key for the genus Otostephanos and describe two new species, O. jolantae sp. nov. and O. ukrainicus sp. nov. For O. jolantae sp. nov. we analysed the intraspecific morphological variability and provided the barcodes of mtCOX1 mitochondrial gene. Further, we developed a method to standardize measurements for the Philodina type of corona and trophi measurements of bdelloids. Otostephanos jolantae sp. nov. is a large rotifer with a smooth cuticle and bright red-orange gut; it can be distinguished from the known species by a high triangular upper lip with a tongue-like tip not divided into lobes, spade-shaped swollen rump, and 6/6 dental formula. It is found in Sphagnum collected in Poland, Ukraine and the Czech Republic. Otostephanos ukrainicus sp. nov. has a long body covered with coarse-grained cuticle on the last two neck segments, trunk and rump; it is distinguished by long narrow head and neck, saccular-like swollen trunk, spade-like rump, and a tiny foot. Unlike the other species of this genus, it has band-like upper lip with two narrow, sharp protrusions separated by an interspace, unusually small spurs and trophi with 5/5 major teeth. Thus far, it is only found in Ukraine, in pine and oak forest litter.
Permanent Link: http://hdl.handle.net/11104/0231325