Preliminary report on the living non-marine Ostracoda (Crustacea) from Tunisia with the description of a new Psychrodromus species Author Zaibi, Chahira Author Scharf, Burkhard Author Viehberg, Finn Andreas Author Keyser, Dietmar Author Kamoun, Fekri text Zootaxa 2013 3626 4 499 516 journal article 10.11646/zootaxa.3626.4.5 1497bc62-3216-4df6-bd7a-70480cde12ac 1175-5326 223016 84357C63-3CD9-46C5-BEEE-1B58D6603CCA Key to the species of the genus Psychrodromus (after Karanovic 2012, modified) 1. Length of the carapace at most 1.4 mm .................................................................... 2 - Length of carapace more than 1.6 mm ..................................................................... 6 2. Posterior seta/claw on the UR with a filamentous tip...................................... P. fontinalis (Wolf, 1920) - Posterior seta/claw on the UR without a filamentous tip....................................................... 3 3. Posterior claw of the UR at the most ½ as long as anterior claw.......................... P. turcicus (Hartmann, 1964) - Posterior claw of the UR longer than ½ of the anterior claw.................................................... 4 4. Dorsal margin of the carapace only slightly arched, carapace elongated, male clasping organ of maxilliped beside the 2 bristles one respectively two truncated setae......................................................... P. tunisicus n. sp. - Dorsal margin of the carapace distinctly arched, not elongated, male clasping organ without truncated setae............. 5 5. Posterior margin of the carapace broadly rounded, posterior seta/claw on the UR very broad and very slightly narrowing from the basis to the tip....................................................... P. o l iv a c e u s (Brady & Norman, 1889) - Posterior margin of the carapace slightly inclined, posterior seta/claw on the UR very narrow distally...................................................................................... P. betharrami Danielopol & Baltanás, 1993 6. Dorsal margin highly arched, greatest H in the middle from which point margin slopes equally towards anterior and posterior ends...................................................................... P. peristericus (Petkovski, 1959) - Dorsal margin less arched, greatest H situated around the middle from which point margin inclined towards anterior end and more rounded towards posterior end........................................ P. robertsoni (Brady & Norman, 1889)