Joeropsis Koehler, 1885

Kim, Sung Hoon, Kim, Jong Guk & Yoon, Seong Myeong, 2022, Two new species of the genus Joeropsis Koehler, 1885 (Isopoda, Asellota, Joeropsididae) from Korean waters, ZooKeys 1090, pp. 85-102 : 85

Genus Joeropsis Koehler, 1885

Joeropsis Koehler, 1885: 7; Kensley and Schotte 1989: 87; Wilson 1997: 86; Kussakin 1999: 12; Just 2001: 304; Kensley and Schotte 2002: 1428.

Jaeropsis : Richardson 1905: 476; Stebbing 1905: 50.

Jaeropsis : Nordenstam 1933: 191; Menzies and Barnard 1959: 10; Menzies 1962: 64; Menzies and Glynn 1968: 76.

Iaeropsis : Nierstrasz 1941: 288 (unjustified emendation).

Type species.

Joeropsis brevicornis Koehler, 1885 by original designation.

Diagnosis.

Body smooth, rarely with sculpture dorsally, laterally parallel. Pseudorostrum with overhanging apex. Eyes positioned dorsolaterally. Mandibles with evenly spaced cusps; spine row consisting of long setae. Maxilliped, endite reaching end of palp article 3; palp article 3 lacking medial lobe. Pereopod 1 with 2 claws and pereopods 2-7 with 2 or 3 claws. Pleopod 2 with a few short simple setae distally in females. Pleopod 3, exopod obliquely articulated between articles ( Just 2001; Bruce 2015).

Remarks.

The genus Joeropsis can be differed from other joeropsidid genera by having a dorsally smooth or finely granular body (vs. coarsely granular and nodular in Rugojoeropsis Just, 2001) and parallel lateral body shape (vs. converging posteriorly in Scaphojoeropsis Just, 2001) ( Bruce 2015). The colour pattern of a body can be distinguishable to easily separate members of the genus ( Bruce 2015). Additionally, the morphology of the cephalon, pseudorostrum, antennae, maxilliped, pleotelson, and male pleopod 1 can be the most diagnostic characters for Joeropsis species ( Kensley and Schotte 2002; Bruce 2009, 2015).