L. Forró - É. Murai szerk.: Miscellanea Zoologica Hungarica 6. 1991 (Budapest, 1991)

Martens, K.: On a small collection of non-marine ostracods from Mongolia, with the description of a new species (Crustacea, Ostracoda)

Ifyocypris mongolica sp. n. (Fig- 1) Type locality: saline ditch in flood area of the river Kerulen, near camp, central aimak, 45 km east of Somon Bajandelger, Mongolia, alt. 1340 m. Type material: Holotype: a male, with soft parts dissected in glycerine in a sealed slide, and with valves stored dry (nos KM. 1422 a, b; IV/P-399,

400). Allotype: a female, dissected and stored as the holotype (only RV kept, LV broken and lost - nos KM. 1424 a, b; IV/P-401,

402). Para types: two females, with valves crushed and to some extent decalcified, stored in spirit (no. IV-557) Diagnosis: a medium-sized Ilyocypris, with surface sculptures limited, apart from a row of wart-like tubercules along the posterior margin; natatory setae on A2 reaching beyond tips of claws with about half their length; Tl with penultimate segment divided; T2 with two long lateral setae on penultimate segment, this segment apically further with 4-6 hook-like structures; hemipenis with widely dilating, triangular lateral shield (Is), a medial shield (ms) consisting of two elongated lobes and a narrow, nearly straight stylus. Additional description of the male Valves (Figs 1B,C) high and with a straight dorsal margin; anterior margin widely rounded, posterior margin nearly straight, both set with a row of tubercules. Anterior calcified inner lamella narrow, posterior calcified inner lamella minute and not running to the highest point of the posterior margin. In dorsal view, both extremities bluntly pointed, greatest width situated approximately in the middle, no lateral tubercules present on the available specimens; anterior sulcus present in the first third of the valves. Length of holotype = 850 ujn. Al with five endopodal segments of nearly equal length; natatory setae very long. A2 with natatory setae reaching beyond tips of endclaws with slightly more than half of their length; aesthetasc Y short and stout, not reaching beyond the distal edge of the first endopodal segment. Apical chaetotaxy: penultimate segment with 1 long and 3 minute Y-setae, apically with 2 long and normal 'z'-setae, third 'z'-seta claw-like. Other aspects of chaetotaxy typical of the Cypridoidea: penultimate segment with a minute aesthetasc y2 and 3 large claws; terminal segment with claws Gm and GM, the bifurcated aesthetasc y3 (short and stout); seta 'g' not seen. Md with coxa stout and wide; palp large. Mxl with second palpsegment twice as wide as long; chaetotaxy of entire limb without special features. Prehensile palps (Figs. 1F,G) subequal, with elongated and narrow first segment, subapically carrying 2 long sensory organs; terminal segment distally swollen and with 1 apical and 1 subapical sensory organ, both long. Tl (Fig. 1H) with all setae short, seta d2 missing; penultimate segment clearly divided; claw slender. T2 (Fig. II) with penultimate segment carrying 2 long lateral setae; apically with 3 stout and 1 slender hook-like structures (transformed setulae) (Fig. IK).