Septembopyrina, An & Boyko & Li, 2015

An, Jianmei, Boyko, Christopher B. & Li, Xinzheng, 2015, A Review Of Bopyrids (Crustacea: Isopoda: Bopyridae) Parasitic On Caridean Shrimps (Crustacea: Decapoda: Caridea) From China, Bulletin of the American Museum of Natural History 2015 (399), pp. 1-85 : 62

Septembopyrina , n. gen.

DIAGNOSIS: Female: Body slightly distorted, pleomeres distinct. Head fused with first pereomere medially and with well-developed frontal lamina, boundary with head obscure. Maxilliped without palp, barbula with pair of projections. Dorsolateral bosses only on first pereomere. Seven pairs of oostegites, brood pouch widely open. Oostegite 1 of left side and right side slightly different in shape, internal ridges smooth. Seventh oostegite smallest. Pleon of five pleomeres, final one very broad. Five pairs of uniramous flaplike pleopods, uropods lacking.

Male: Body width about 1/3 length. Head fused with first pereomere, lateral indentations present. No midventral tubercles. Pereopods smaller posteriorly. Pleon segments distinct ventrally but fused dorsally.

ETYMOLOGY: The prefix “septem” (for the seven oostegites of the female) plus the genric name Bopyrina are selected to emphasize the close relationship to Bopyrina ; gender feminine.

TYPE SPECIES: Septembopyrina tozeumaophila , n. sp., by original designation.

OTHER SPECIES: None.

REMARKS: The new genus is related to Schizobopyrina Markham, 1985 , and Bopyrina in that all have unequal formation of oostegite 1, head somewhat fused with the first pereomere, uniramous pleopods and lack uropods. Markham (1985a) separated Schizobopyrina from Bopyrina and transferred 10 species from Bopyrina to Schizobopyrina . He showed that Schizobopyrina females have a maxilliped palp, elongate oostegites 2–5, and at least lateral separation of the pleomeres, but Bopy ‐ rina females lack a maxilliped palp, have tiny oostegites 2–5, and pleomere fusion on the shorter side. This new genus is most closely related to Bopyrina , but Septembopyrina , n. gen., has the female pleomeres distinct on both sides and seven pairs of oostegites. The new genus also can be distinguished from Schizobopyrina by the weakly asymmetrical body (strongly asymmetrical in Schizobopy ‐ rina), five pairs of uniramous pleopods (four pairs in Schizobopyrina ), and maxilliped without palp (with palp in Schizobopyrina ). The presence of seven pairs of oostegites is very uncommon and considered a primitive character state in bopyrids ( Boyko and Williams, 2010); the only prior records from any bopyrines are from Bopyrinella albida and Capitetragonia elliptica , but the type species of Septembopyrina , n. gen., does not otherwise resemble these two species except in this one character.