Dinochelus

Dinochelus ausubeli is described a 2010 Type of decapods from the monotypic genus Dinochelus. The holotype was in the framework of the project " Census of Marine Life " in 2007 discovered in the Pacific in the Philippines (15 ° 56'N, 121 ° 45'E15 .933333333333121.75 ).

Description

This at a depth of 250 m discovered specimen of Dinochelus ausubeli has a carapace length of 31 mm. The color is completely transparent - white, the scissors and antennae are reddish - pink. On the Pleon are often reddish -pink spots. The carapace appears blurred reddish- pink in the center.

Rostrum is triangularly shaped and has three forward and upward ( anterodorsale ) peaks. The carapace is speckled with small spines ( spinules ), otherwise fine granulated until smooth. The Pleon is strongly depressed, dorsal side smooth. The telson is almost square, with a slightly granular surface.

On the first pair of walking legs, the scissors are clearly unequal and different. The scissors finger ( dactylus and propodus ) are about four times as long as the scissors palm in the larger paper; the inwardly directed spikes of the scissors when the scissors are closed, interlocking fingers. The smaller scissors has in contrast to the larger, which also extends to the outside spines on the scissor fingers. On the second, third and fifth pair of walking legs are also very small scissors.

The eyes of Dinochelus ausubeli are fully developed and movable; the cornea is present.

Systematics and Taxonomy

The genus name Dinochelus consists of δεινός ( deinos, terrible ',' mighty ') and χηλή ( chela, scissors ') and refers to the strikingly large scissors. The specific epithet was chosen in honor of Jesse H. Ausubel, a co-founder of the " Census of Marine Life".

Dinochelus is a sister taxon of the genera Thaumastocheles and Thaumastochelopsis, which form a monophyletic group within the lobster -like. These are sometimes set up as an independent family ( Thaumastochelidea ). The Group will, inter alia, defined by the strong inequality of scissors on the first pair of walking legs. Distinguish lets you Dinochelus ausubeli of types of Thaumastocheles and Thaumastochelopsis mainly by two divergent, narrow rows of spines on the occlusal surface of the scissors finger of the larger paper. In Thaumastocheles and Thaumastochelopsis are either to find only one row, or three-sided teeth present. Furthermore Dinochelus have a T-shaped epistome.