Entomopsyllus McKinnon, 1988

Canário, Roberta, Hurbath, Thiego, Da Rocha, Carlos E. F., Neves, Elizabeth G. & Johnsson, Rodrigo, 2019, Description of a new species of Spongiopsyllus Johnsson, 2000, and redescriptions of Parmulodes verrucosus Wilson, 1944 and Entomopsyllus stocki Kim, 2004 with revised diagnosis of Entomopsyllus (Copepoda, Siphonostomatoida, Entomolepididae), Zootaxa 4612 (2), pp. 247-259 : 253

Genus Entomopsyllus McKinnon, 1988

Emended diagnosis. Entomolepididae , sub-family Entomolepinae. Body shield composed by cephalosome and pedigerous somites 2–4; pedigerous somite 4 recovering entirely the prosome. Two postgenital somites in female and one in male. Exopod of antenna hirsute, as long as endopod. Third endopodal segment of leg 1 prolonged distally into sharpened process, therefore distal setae located sub-distally on inner margin. Second endopodal segment of leg 2 with single seta. Third exopodal segment of leg 3 with two lateral spines. Leg 4 with endopod absent and exopod 3-segmented. Leg 5 at least as long as the genital complex.

Remarks. The original diagnosis of Entomopsyllus , as presented by McKinnon (1988) is very concise and included some characteristics such as (1) exopod of antennule as a single, long, blunt, hirsute segment; (2) endopod of leg 4 absent; and (3) leg 5 as a single segment, at least as long as genital complex. These characteristics were useful to stablish Entomopsyllus within the sub-family Entomolepinae. However, Johnsson (2000), when erecting Spongiopsyllus , specified the diagnostic characters to differentiate both genera, but the Entomopsyllus´ diagnosis remained as originally stated. Therefore, Entomopsyllus shares these characteristics with Spongiopsyllus . Neverthe- less, Entomopsyllus possesses two and three postgenital somites in female and male, respectively, instead of three and four as in Spongiopsyllus .