“Isohypsibius asper (MURRAY, 1906) (fig. 15, 16, phot. 26, 27)
Length 230-545 µm. The body is brown or dark-brown, large eyes present. Cuticle is thick, the dorsum is covered with granulation increasing in size towards the body end. The granulation is composed mostly of hemispherical thickenings (fig. 16f) which are often united and form characteristic through variable pattern (fig. 16b). The thickenings are arranged in dark, transversal belts with light dots (phot. 26, 27). Against a background of mentioned belts are developed delicate striae which form irregular net of polygonal meshes (fig. 16b). The meshes match to particular granules, their diameter is up to 5 µm (3-4 µm mostly). Height of granules is up to 3 µm. Moreover, smaller and less distinct granulation is developed on the body sides and legs. The mouth opening with a wreath of small lamellae, terminal though slightly shifted on the ventral side. Most specimens with a few small granules in the posterior part of buccal cavity (fig. 16a). Buccal tube with large apophyses. It is a little narrower in the anterior part than in the posterior one. Its length is 45 µm, outer diameter 4.5 µm (in the specimen 340 µm long). Pharynx short-oval (38 X 34 µm), with three macroplacoids. A microplacoid is absent. The macroplacoids increasing progressively in size toward the posterior body end (fig. 16a) though in smaller specimens the first and the second macroplacoid are nearly equal in length. The length of macroplacoids: I-4, II-4.5, III-5 µm. Claws large with strongly ben branches. Main branches with distinct accessory spines. Cuticular thickenings (lunules?—fig. 16c-3) occur on the claws bases. Outer claws of IVth pair are 33 µm long.
Localities: King George Island—6(11), 10(9).
The species was recorded from Antarctic insels (JENNINGS, 1976a). The presence of this species in Europe (Poland, Rumania and Ukraine: WĘGLARSKA, 1959a; RUDESCU, 1964) requires a confirmation.”
(Dastych, 1984: 402-405)
