Abstract
An examination of isopod material deposited in the Museum of the University of Costa Rica, San Pedro, revealed a new genus and species of terrestrial isopods, Mirtana costaricensis gen. et sp. n. which is distinguished by its three‐articulate antennal flagellum, incurved coxal plates and prominent neopleurae, while noduli laterales and respiratory areas on any pleopod are apparently lacking. Despite this unique combination of characters, a closer relationship to the widely distributed neotropical genus Ischioscia Verhoeff, 1928 can be postulated because of similar structure of male pereopods 1 to 2 and pleopod 1 endopodite.
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