A new species of Keysercypria Karanovic (Crustacea: Ostracoda). From Paraná wetlands of Argentina

BATTAUZ YAMILA; DIAZ ANALIA

Valdivia

Congreso; 1er Congreso Iberoamericano de Limnología (CIL); 2016

Ostracods are bivalved crustaceans that abound in all types of marine and non-marine environments. Thematerial was collected in April 2015 from temporary ponds of the Middle Parana River (31°37? S, 60°41?􀀺􀀏􀀃􀀤􀁕􀁊􀁈􀁑􀁗􀁌􀁑􀁄􀀌􀀑􀀃􀀲􀁖􀁗􀁕􀁄􀁆􀁒􀁇􀁖􀀃􀁚􀁈􀁕􀁈􀀃􀁗􀁋􀁈􀁑􀀃􀂿􀁛􀁈􀁇􀀃􀁚􀁌􀁗􀁋􀀃􀁉􀁒􀁕􀁐􀁄􀁏􀁌􀁑􀀃􀀔􀀓􀀈􀀃􀁄􀁑􀁇􀀃􀁓􀁕􀁈􀁖􀁈􀁕􀁙􀁈􀁇􀀃􀁌􀁑􀀃􀀚􀀓􀀈􀀃􀁈􀁗􀁋􀁄􀁑􀁒􀁏􀀑􀀃􀀷􀁋􀁈􀀃􀁇􀁌􀁖􀁖􀁈􀁆􀁗􀁈􀁇􀀃valves were stored dry in micropaleontological slides and soft parts in glycerine in sealed slides. The newspecies is characterized by a medium sized, ovoid carapace with a high dimorphism. Females larger thanmales. Left valve overlaps right valve. Surface of carapace smooth with some long setae. Tiny pustulespresent along free margins in both valves. Greatest height at midlength. Selvage peripheral anteriorly. Cal-􀁆􀁌􀂿􀁈􀁇􀀃􀁌􀁑􀁑􀁈􀁕􀀃􀁏􀁄􀁐􀁈􀁏􀁏􀁄􀀃􀁚􀁈􀁏􀁏􀀃􀁇􀁈􀁙􀁈􀁏􀁒􀁓􀁈􀁇􀀃􀁒􀁑􀀃􀁅􀁒􀁗􀁋􀀃􀁐􀁄􀁕􀁊􀁌􀁑􀁖􀀑􀀃􀀥􀁒􀁗􀁋􀀃􀁐􀁄􀁕􀁊􀁌􀁑􀁖􀀃􀁕􀁒􀁘􀁑􀁇􀁈􀁇􀀑􀀃􀀤􀁑􀁗􀁈􀁕􀁌􀁒􀁕􀀃􀁐􀁄􀁕􀁊􀁌􀁑􀀃􀁄􀁆􀁘􀁐􀁌􀁑􀁄􀁗􀁈􀁇􀀏􀀃and ventral margin convex in the middle. In males the terminal segment of the antenula with a strong serratedclaw. Mandibula with eight cuspate teeth. Second and third maxillular endites with two setae and twospatula-like claws each; palp not segmented, tapering, with 2 apical setae. Very short setae on endopodalsegments of the third thoracopod, unequally long setae ?h1? and ?h2? on the terminal segment. Hemipenis􀁚􀁌􀁗􀁋􀀃􀁄􀀃􀁗􀁕􀁌􀁄􀁑􀁊􀁘􀁏􀁄􀁕􀀃􀁇􀁌􀁖􀁗􀁄􀁏􀀃􀁏􀁒􀁅􀁈􀀏􀀃􀁄􀀃􀁓􀁒􀁌􀁑􀁗􀁈􀁇􀀃􀁗􀁌􀁓􀀃􀁄􀁑􀁇􀀃􀁄􀀃􀂿􀁑􀁊􀁈􀁕􀁏􀁌􀁎􀁈􀀃􀁓􀁕􀁒􀁍􀁈􀁆􀁗􀁌􀁒􀁑􀀏􀀃􀁇􀁒􀁕􀁖􀁄􀁏􀀃􀁖􀁈􀁗􀁄􀀃􀁓􀁕􀁈􀁖􀁈􀁑􀁗􀀞􀀃􀁏􀁒􀁚􀁈􀁕􀀃􀁕􀁄􀁐􀁘􀁖􀀃􀁖􀁋􀁄-ped in a claspering process. Posterior seta on the caudal ramus long. There are ten species within the genus􀁎􀁈􀁜􀁖􀁈􀁕􀁆􀁜􀁓􀁕􀁌􀁄􀀃􀁌􀁑􀀃􀀶􀁒􀁘􀁗􀁋􀀃􀀤􀁐􀁈􀁕􀁌􀁆􀁄􀀃􀀷􀁋􀁈􀀃􀁑􀁈􀁚􀀃􀁖􀁓􀁈􀁆􀁌􀁈􀁖􀀃􀁕􀁈􀁖􀁈􀁐􀁅􀁏􀁈􀁖􀀃􀁎􀁈􀁜􀁖􀁈􀁕􀁆􀁜􀁓􀁕􀁌􀁄􀀃􀁄􀁉􀂿􀁑􀁌􀁖􀀃􀁅􀁈􀁆􀁄􀁘􀁖􀁈􀀃􀁒􀁉􀀃􀁗􀁋􀁈􀀃􀁖􀁌􀁐􀁌􀁏􀁄􀁕􀀃􀁖􀁋􀁄􀁓􀁈􀀃and size of the carapace, althought have a very different morphology of the hemipenis and the length of theh3 seta of the second thoracic limb.