Comalcandona gibsoni sp. nov. (Ostracoda, Candonidae) from Comal Spring, Texas, USA

Abstract

A new species, Comalcandona gibsoni sp. nov., was found from Comal Springs, Comal County, Texas, USA. The new specieshas four horn-like projections located on the antero- and posterodorsal ends of the valves and this unique character separates thisspecies from Comalcandona tressleri. Some other distinguishing differences in chaetotaxy (e.g., position, length, and number of setaeon the segments) can also be seen in the soft body parts (e.g., absence of gamma seta on mandibula, duckbill shape of clasping organof first leg, numbers of whorls in Zenker’s organ). Based on the differences, Comalcandona gibsoni sp. nov. is proposed as the secondspecies of the genus.