Description of the Male of Asthenognathus Hexagonum Rathbun, 1909 (Decapoda, Pinnotheridae)

Abstract

The male of Asthenognathus hexagonum Rathbun, 1909 was found for the first time. A description, including the systematic characters as well as illustrations of this pinnotherid crab are presented.A key to the Indo-Pacific species of Asthenognathus is also provided. RÉSUMÉLe mâle d'Asthenognathus hexagonum Rathbun, 1909 a été trouvé pour la première fois. Une description, incluant les caractères systématiques, ainsi que des illustrations de ce crabe Pinnotheridae sont présentées. Une clé d'identification des espèces indo-pacifiques du genre Asthenognathus est aussi fournie.

First Record of Holothurian Symbiotic Crab Asthenognathus inaequipes (Decapoda: Brachyura: Varunidae) from Korea

“…The specimen agrees closely with the description of Sakai (1939) except in the number of the tooth on the inner margin of the movable finger in the male cheliped. It had an obtuse tooth in his description and a figure of Takeda and Konishi (1991) and two small teeth was described in the key of the Indo-Pacific species of Asthenognathus by Yang and Tang (2008). However, the present male specimen has three teeth, therefore, the number of tooth seems to be variable according to the specimens.…”