Two New Freshwater Eutardigrade Species From Sicily

Zootaxa. 2015 Feb 11;3918(2):273-84. doi: 10.11646/zootaxa.3918.2.8.

Abstract

Two new species of freshwater Eutardigrada are described from Sicily: Isohypsibius rusticus sp. nov. and Isohypsibius zappalai sp. nov. The former species has eye spots, ornamented body surface with many, variously sized tubercles; bucco-pharyngeal apparatus of the Isohypsibius type; pharyngeal bulb with apophyses and two rod-shaped macroplacoids; microplacoid absent; claws, of the Isohypsibius type, well developed, with long and thin common basal portion; main branches of all claws without free accessory points; very thin lunules present; cuticular bars on the legs absent. Isohypsibius zappalai sp. nov. has eye spots; entire body surface with small tubercles rounded in shape, fairly uniformly sized and tending to form transverse lines; bucco-pharyngeal apparatus of the Isohypsibius type, pharyngeal bulb with apophyses and two macroplacoids; microplacoid absent; claws of the Isohypsibius type, well developed, with long common basal portion and both main and secondary branches with a wide proximal portion. Main branches of all claws with accessory points; small, flexible lunules present; cuticular bars on the legs absent.

MeSH terms

  • Animal Distribution
  • Animal Structures / anatomy & histology
  • Animal Structures / growth & development
  • Animals
  • Body Size
  • Ecosystem
  • Female
  • Fresh Water / parasitology
  • Male
  • Organ Size
  • Sicily
  • Tardigrada / anatomy & histology
  • Tardigrada / classification*
  • Tardigrada / growth & development