Zoology Museum

Post Graduates and Research Department of Zoology, V.O. Chidambaram College, Tuticorin 628 008 Tamil Nadu

Ar.104 Huenia sp (Arrowhead crab)

 Ar.104        Huenia sp (Arrowhead crab)

 

Phylum   : Arthropoda

Class       : Malacostraca

Order      : Decapoda

Family    : Epialtidae

Genus    : Huenia

 Description: The carapace elongate triangular in outline, the dorsal surface markedly depressed and flattish. The gastric region has three tubercles placed in a triangle, the base forwards; the cardiac region mounted with a conical tubercle. The antero-lateral border has two lobules, the anterior or hepatic one being usually smaller and very often quite rudimentary, the posterior or branchial one being usually laterally produced but it forms sometimes only an angle. The pseudorostrum is very long and laterally compressed, haired on both borders. The preocular tooth distinct but no other orbital teeth, the eyes being non-protected and lodged in circular rudimentary orbits on the lateral vertical surface of the neck. The female carapace is broader in proportion to the length, the pseudorostrum being much shorter than that of male, the preocular tooth placed not far in front of the eyes. The gastric region has only one median tubercle, the cardiac tubercle not very prominent.

No comments

Theme images by sandsun. Powered by Blogger.