Joeropsis Koehler, 1885

Kensley, B & Schotte, M, 2002, New species and records of Asellota from the Indian Ocean (Crustacea: Peracarida: Isopoda), Journal of Natural History 36, pp. 1421-1461: 1428

publication ID

http://doi.org/10.5281/zenodo.5305569

DOI

http://doi.org/10.5281/zenodo.5305569

persistent identifier

http://treatment.plazi.org/id/03FCF375-FFBE-D354-86B3-2FB7E547FE85

treatment provided by

Felipe

scientific name

Joeropsis Koehler, 1885
status

 

Genus Joeropsis Koehler, 1885  

Joeropsis Koehler, 1885: 1   ; Kensley and Schotte, 1989: 87.

Diagnosis. Dorsolateral eyes present. Rostrum distinct, sometimes with ange of transparent scales. Antennule with basal article widest and longest, often with transparent ange of scales. Antennal peduncle articles 3–5 somewhat in ated, article 2 often with fringe of transparent scales; agellum of about six short articles. Pleopod 1 of male, rami fused, elongate, distally rounded. Pleon consisting of single shield-shaped segment. Uropodal protopod short, usually with acute or tooth-like mesiodistal angle, tucked into sockets on either side of narrowly rounded posterior pleonal margin; rami reduced to small setose lobes.

Remarks. Species of the genus Joeropsis   are widespread in tropical and temperate waters, occurring primarily in shallow habitats. Most are small (less than 5 mm total length), and morphologically very similar, with mouthparts, pereonal and pleonal appendages showing little variation. Five characters which do vary have been used to separate species: degree of setation of the body; serration of the lateral margins of the cephalon; shape of the rostrum; presence or absence of a strong mesiodistal tooth on the uropodal protopod; serration of the lateral margins of the pleon. As with so many groups of crustaceans, species of Joeropsis   can be easily separated when alive or freshly dead, on colour pattern alone. If the animals are preserved in alcohol, this pigmentation is lost with time.

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Isopoda

Family

Joeropsididae

Loc

Joeropsis Koehler, 1885

Kensley, B & Schotte, M 2002
2002
Loc

Joeropsis

Koehler 1885: 1
1885