Glypturus Stimpson, 1866

Sato, Taigi, Komai, Tomoyuki & Shimizu, Naoto, 2024, Glypturus ferox, a new species of ghost shrimp (Decapoda: Axiidea: Callichiridae) from the Ryukyu Islands, southwestern Japan, Zootaxa 5432 (3), pp. 379-397 : 393

Key to extant species of Glypturus Stimpson, 1866

1. Telson posterior margin with a small median spine........................... G. rabalaisae Sakai, 2011 (West Atlantic)

- Telson posterior margin unarmed......................................................................... 2

2. Major cheliped palm lower margin armed with spines or spinules........................................................................................................................ G. ferox n. sp. (Northwest Pacific)

- Major cheliped palm lower margin unarmed................................................................ 3

3. Major cheliped palm lateral and mesial faces and carpus lateral face smooth, without field of granules............................................................................. G. armatus (A. Milne Edwards, 1870) (West Pacific)

- Major cheliped palm lateral and mesial faces and carpus lateral face with fields of granules........................... 4

4. Major cheliped palm mesial face with longitudinal field of granules extending from base of fixed fingers to beyond midlength, lateral face with field of distinct granules adjacent to base of fixed finger....................................................................................................... G. acanthochirus Stimpson, 1866 (West Atlantic)

- Major cheliped palm mesial face with vertical, narrow field of granules proximal to base of fingers, lateral face with field of faint granules adjacent to base of fixed finger........................................................................................... G. laurae (de Saint Laurent in de Vaugelas & de Saint Laurent, 1984) (Red Sea, Singapore)