Cyrtopleura Tryon, 1862

Delfino, Marina & Signorelli, Javier H., 2021, Fig. 13 in Fig. 12. Majella pristis n in Periclimenaeus djiboutensis Bruce 1970, Zoological Studies 60 (28), pp. 1-20 : 7

Genus Cyrtopleura Tryon, 1862

[= Leuconyx H. Adams and A. Adams, 1863 (name rejected by Turner (1969) as a forgotten name (nomen oblitum) because it was not used as a valid name for 50 years (ICZN 1999, Article 23b)].

Type species: Pholas cruciger G.B. Sowerby I, 1834 by subsequent designation ( Stoliczka 1870, 1871).

Distribution: Atlantic coast of North America from Massachusetts to Gulf of Mexico, South America from Venezuela to Argentina and Pacific coast of Central America from Panama to Ecuador.

Remarks: Cyrtopleura currently includes two subgenera, Cyrtopleura s. s. and Scobinopholas Grant and Gale, 1931 , and three living species. The type species Cyrtopleura (C.) crucigera (G. B. Sowerby I, 1834) from the Pacific coast of Central America and northern South America; Cyrtopleura (Scobinopholas) costata ( Linnaeus, 1758) and C. (S.) lanceolata (d'Orbigy, 1841 in 1834–1847) ( Huber 2010; Coan and Valentich-Scott 2012). Cyrtopleura differs from the genus Pholas in the simple umbonal reflection, not septated, and from Barnea in shell outline, anterior end more rounded and umbonal reflection more developed. Scobinopholas differs from Cyrtopleura s. s. in the rounded anterior end, narrow pedal gape and more conspicuous sculpture.