Establishment of a new genus for Parastenocaris itica (Copepoda, Harpacticoida) from El Salvador, Central America, with discussion of the Parastenocaris fontinalis and P. proserpina groups

Iheringia. Série Zoologia

Paulo Henrique C. Corgosinho²  Pedro Martínez Arbizu¹  Daniel Previattelli¹ 

[1] ,Center Unesco International Center for Education, Capacity Building and Applied Research in Water Frutal MG ,Brazil

关键词: Freshwater;    Neotropics;    Parastenocarididae;    Taxonomy;    Água doce;    Neotropical;    Parastenocarididae;    Taxonomia;   

DOI  :  10.1590/S0073-47212012005000009

来源: SciELO

【 摘 要 】

A new genus of Parastenocarididae is described from the Neotropical region. Iticocaris gen. nov. is established to include Parastenocaris itica Noodt, 1962. Iticocaris gen. nov. is defined by the following characters: 1) male leg 3 with 2-segmented exopod; 2) first exopodal segment short and rectangular; 3) thumb hypertrophic, longer than the second exopodal segment and inserted on the distal edge of exopod segment 1, occupying the whole distal margin; 4) exopod 2 or apophysis strongly sclerotized, articulated with the exopod segment 1 on its inner margin and curved against the thumb, forming a strong forceps; 5) leg 4 endopod without dimorphism in shape and size vs. minor dimorphism in ornamentation; 6) leg 5 with three setae and 7) lack of the anterolateral furcal seta II. The new genus is monotypic, represented by Iticocaris itica (Noodt, 1962) comb. nov., from El Salvador, Central America. A close relationship is hypothesized between I. itica and the genus Brasilibathynellocaris Jakobi, 1972, the males of which both share the forceps-like elongated apophysis.

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