Genus Stenodactylina Beurlen, 1928

(Fig. 1 J-L)

Stenodactylina Beurlen, 1928: 175 . — Glaessner 1969: 456. — Schweigert 2013: 411. — Devillez et al. 2016: 522, figs 1D-F.

Erymastacus Beurlen, 1928: 171 (pars.). — Secrétan 1964: 71. — Glaessner 1969: 456 (pars.). — Hyžný et al. 2015: 375.

TYPE SPECIES. — Stenodactylina liasina Beurlen, 1928, by monotypy.

DIAGNOSIS BY Devillez & Charbonnier (2019). — Fusiform intercalated plate; narrow post-orbital area; deep, very wide cervical groove, joined to dorsal margin and to antennal groove; short gastro-orbital groove originating as a slight median inflexion of cervical groove; postcervical and branchiocardiac grooves nearly parallel; narrow postcervical groove, not joined to branchiocardiac groove and interrupted in hepatic region; branchiocardiac groove strongly inclined, joined to hepatic groove; hepatic groove concavo-convex, joined to cervical groove; inferior groove convex posteriorly, joined to hepatic groove; chelate P1; P1 propodus rectangular or trapezoidal, with inner margin more compressed than outer margin, with a wide dactylar bulge; P1 with extremely long and slender fingers, equal in length; P1 chela (form I; Fig. 1K) with strong, rectangular or trapezoidal propodus, bearing straight or sinuous fingers, strongly narrowing immediately after their basis; outer margin convex at the basis of the index; P1 chela (form II; Fig. 1L) with trapezoidal propodus, outer margin straight or convex, straight fingers, narrowing gradually to their distal extremity.