Hyalidae

Eun, Ye, Kim, Young-Hyo, Hendrycks, Ed A. & Lee, Kyung-Sook, 2014, The family Hyalidae (Crustacea: Amphipoda: Talitroidea) from Korean waters. 1. Genus Ptilohyale Bousfield & Hendrycks, 2002, Zootaxa 3802 (4), pp. 583-595 : 586

Key to genera of the family Hyalidae in Korea (after Bousfield & Hendrycks, 2002)

1. Pereopods 3–7, dactylus large (1/4 – 1/ 2 x propodus), medial marginal seta small, clasping spine of propodus strong; coxa 1 without cusp......................................................................................... 2

- Pereopods 3–7, dactylus small (<1/ 4 x propodus), medial marginal seta distinct, clasping spine of propodus lacking or small; coxa 1 with posterior marginal cusp....................................................................... 3

2. Gnathopod 2 (♂), carpal lobe prominent; uropod 3 biramous; telson with apical spine(s); maxilla 1 palp biarticulate.................................................................................. Parallorchestes Shoemaker, 1941

- Gnathopod 2 (♂), carpal lobe lacking or vestigial; uropod 3 uniramous; telson without apical spine(s); maxilla 1 palp uniarticulate................................................................ Protohyale Bousfield & Hendrycks, 2002

3. Uropod 1, peduncle with strong distomedial spine; antenna 2, peduncular article 5 and flagellum strongly plumose-setose........................................................................ Ptilohyale Bousfield & Hendrycks, 2002

- Uropod 1, peduncle without or with weak distomedial spine; antenna 2, peduncular article 5 and flagellum unarmed or with weak setation.......................................................... Apohyale Bousfield & Hendrycks, 2002