Candobrasilopsis, Higuti & Martens, 2012

Higuti, Janet & Martens, Koen, 2012, Description of a new genus and species of Candonopsini (Crustacea, Ostracoda, Candoninae) from the alluvial valley of the Upper Paraná River (Brazil, South America), European Journal of Taxonomy 33, pp. 1-31 : 7

Genus Candobrasilopsis gen. nov.

urn:lsid:zoobank.org:act:6DA166F4-39D1-4AB3-8EC6-8C5C53ADB198

Diagnosis

Anterior calcified inner lamella broad, anterior inner margin sinuous, posterior calcified inner lamella narrow, posterior inner margin running parallel to valve margin. Terminal Md-palp segment short (L ± 1.5 x basal width). Prehensile palps one-segmented, base inflated, distal finger long, hook-like. Hemipenis of triangular type, without protruding lobes a and b. Caudal ramus without proximal seta, distal seta reduced to a small spine.

Etymology

Named after the country of Brazil ( Brasil in Portuguese), with “ Cando- ” and “- opsis ” denoting relationship to Candonopsis .

Type species

Candobrasilopsis rochai sp. nov. (by original designation).

Other species

Candonopsis brasiliensis Sars, 1901 ;? Candonopsis anisitsi Daday, 1905 .

Differential diagnosis

This new genus is closely related to Candonopsis Vavra, 1891 (with type species C. kingsleyi (Brady & Norman, 1870)) and to Latinopsis Karanovic & Datry, 2009 (type species L. patagonica Karanovic & Datry, 2009 ). It differs from Candonopsis s.s. mainly in the presence of a short terminal Md-palp segment, by the fact that the prehensile palps have 2 distal setae (1 in Candonopsis ) and by the relatively simple attachment of the caudal ramus (1 lateral branch in Latinopsis and in Candobrasilopsis gen. nov., 3 in Candonopsis s.s.).

The new genus differs from Latinopsis (only L. patagonica ) mainly in the presence of a broad anterior calcified inner lamella with sinuous inner margin (narrow and with evenly rounded inner margin in Latinopsis ) and by the absence of protruding lobes ‘a’ and ‘b’ in the hemipenis (present in Latinopsis ).

Remarks

We propose to tentatively transfer C. anisitsi Daday, 1905 to Candobrasilopsis gen. nov. based on the morphology of the hemipenis and the prehensile palps (see discussion below).