Rissoides Manning & Lewinsohn, 1982

Rissoides Manning & Lewinsohn, 1982

Rissoides Manning & Lewinsohn, 1982: 352–353 . [ Type species Squilla desmaresti Risso, 1816 , by original designation].

Diagnosis. Body smooth, compact, size small to moderate. Cornea bilobed, distinctly broader than stalk; ocular scales separate. Carapace without anterolateral spines; dorsal carinae reduced, with at most reflected marginals and posterior part of each LT carina present; median posterior margin evenly concave, posterolateral margins broadly rounded. Raptorial claw with dactylus of 5 teeth, outer margin evenly convex; carpus with dorsal ridge indistinct; ischiomeral articulation terminal. Mandibular palp absent. 4 epipods present. TS5 with lateral process an inconspicuous diagonal or flattened lobe, a ventral spine present on each side; TS6–7 lateral processes not bilobed, evenly rounded. AS 1–5 with or without SM carina; with IM, LT and MG carina. AS 6 with SM, IM, LT carinae. Telson broad, MD present, supplemental carinae absent; IM, LT teeth present, SM with movable apices; prelateral lobe absent; postanal carina, if present, low. Uropodal protopod inner margin crenulate as low tubercles or short denticles.

Composition. Rissoides africanus ( Manning, 1974) ; R. barnardi ( Manning, 1975a) ; R. calypso ( Manning, 1974) ; R. desmaresti ( Risso, 1816) ; R. pallidus ( Giesbrecht, 1910) .

Remarks. Rissoides includes five species. Excluding R. barnardi , the other four species all occur in the eastern Atlantic; two species, R. africana and R. calypso , only occur off the west coast of Africa ( Manning 1977a).