Heteromysoides kumejimensis, a new species of the family Mysidae (Mysida) is described from a submarine cave on Kumejima Island, Ryukyu Islands, southwestern Japan, This species can be distinguished from other species of the genus by the following combination of characters: eyes subglobular in dorsal aspect, without sharp process; cornea developed; telson subtriangular, distally rounded, 1.7 times as long as maximum width, with 3 or 4 pairs of short simple spines laterally, and with 3 or 4 pairs of long serrate spines posterolaterally and 1 pair of short simple spines apically; and endopod of third thoracopod with simple, not subchelate, termination.

在日本西南部琉球群岛久米岛上的海底洞穴中，描述了Mysidae（Mysida）家族的新物种Heteromysoides kumejimensis，该物种可通过以下特征组合与其他属区分：背面，无尖锐的突起；角膜发达；telson三角下，远端圆形，最大宽度的1.7倍，侧面有3或4对短的简单棘，后外侧有3或4对长的锯齿棘，顶端有1对短的简单棘；和第三胸足类的内足，具简单的，不下螯合的终止。