A striking case of convergent evolution in two species of Cypricercinae (Crustacea, Ostracoda), with the description of a new genus and species from Brazil

Publication date: Available online 5 July 2019Source: Zoologischer AnzeigerAuthor(s): Vitor Góis Ferreira, Janet Higuti, Koen MartensAbstractNeostrandesia striata gen. n. sp. n. is here described and constitutes an interesting case of convergent evolution with Bradleytriebella lineata (Victor and Fernando, 1981). Both cypricercine species look superficially similar, with comparable valve and carapace shapes and especially ornamentation, as in both species the valves are densely set with longitudinal ridges. However, examination of the limb chaetotaxy shows important differences, especially in the chaetotaxy of the maxillula-palp which shows reduced numbers of claws and setae, and in the first thoracopod, in which seta ‘b’ has taken a giant aspect in the new taxon. These, and other, differences merit the allocation of these two species to different genera and even tribes within the subfamily Cypricercinae.

Source: A Journal of Comparative Zoology - July 6, 2019 Category: Zoology Source Type: research