Maraenobiotus, Mrazek, 1893

Gaviria, Santiago & Defaye, Danielle, 2021, A new species of Maraenobiotus Mrázek, 1893 (Copepoda: Harpacticoida Canthocamptidae) from Colombian Andean mosses, with an identification key for the American species, Zootaxa 5051 (1), pp. 101-116 : 114-115

Identification key for American species of Maraenobiotus

Females

1 Leg 2, exopod 3 with 4 setae and spines................................................................... 2

- Leg 2, exopod 3 with 5 setae and spines................................................................... 3

2 Caudal rami dorsally without sigmoid chitinous thickening; caudal setae IV and V bulbous at their base... M. fontinaloides

- Caudal rami dorsally with sigmoid chitinous thickening; caudal setae IVand V straight, not bulbous at their base................................................................................................ M. brucei brucei

3 Anal operculum without spinules........................................................... M. naticochensis

- Anal operculum with spinules........................................................................... 4

4 Leg 3, distal exopodal segment with six setae and spines...................................................... 5

- Leg 3, distal exopodal segment with five setae and spines..................................................... 6

5 Leg 3, second endopodal segment with five setae and spines; leg 5, baseoendopod with five elements.................. 9

- Leg 3, second endopodal segment with four setae and spines; leg 5, baseoendopod with four elements....... M. canadensis

6 Leg 4, distal exopodal segment with six setae and spines............................................. M. australis

- Leg 4, distal exopodal segment with five setae and spines..................................................... 7

7 Leg 4, second endopodal segment with four setae and spines; leg 1, proximal endopodal segment reaching to 2/3 length of second exopodal segment................................................................. M. subterraneus

- Leg 4, second endopodal segment with five setae and spines; leg 1, proximal endopodal segment extending to apical margin of second exopodal segment.............................................................................. 8

8 Caudal ramus 2.0–2.5 times longer than broad, dorsally with sigmoid chitinous thickening, innen margin unarmed, seta VI thick, basally leaf-like enlarged; mandibular palp 2-segmented....................................... M. husmanni

- Caudal ramus 1.3 times longer than broad, dorsally without chitinous thickening, inner margin armed with four spinules inserted subapically, seta VI thin, bassally not enlarged; mandibular palp 1-segmented.................. M. wellsi sp. nov.

9 Caudal ramus conical, as long as broad; leg 1, proximal endopodal segment reaching to at least apical margin of second exopodal segment............................................................................... M. fontinalis

- Caudal ramus barrel shaped, 1.7 times longer than broad; leg 1, proximal endopodal segment reaching to middle of second exopodal segment................................................................. M. insignipes insignipes