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A new species of the genus Athanas (Decapoda, Caridea, Alpheidae) Living in the burrows of a mantis shrimp

2002; Brill; Volume: 75; Issue: 3 Linguagem: Inglês

10.1163/156854002760095462

1568-5403

Kenichi Hayashi,

Marine and fisheries research

A new stomatopod associate, Athanas squillophilus n. sp., is described and illustrated. It is a specialized form of the genus Athanas characterized by well-exposed eyes with less pigmented corneas, a well-developed pterygostomial spine, a rudimental exopod on the first pereopods, a smooth posterior margin of dactyli and propodi of the last three pereopods, and dense setae on the flexor margin of the chela of the first pereopods. The genus Pseudathanas shares the last character with the new species, but two spines on the anterior margin of the carapace and the smooth diaeresis exclude the new species from that genus. The new species is one of the northernmost alpheids, being known from southern Hokkaido. This is the second report of the association between an alpheid shrimp and a stomatopod. Athanas squillophilus n. sp., nouvelle crevette associee a un stomatopode, est decrite et illustree. Cette espece specialisee du genre Athanas est caracterisee par des yeux tres saillants aux cornees peu pigmentees, une epine pterygostomienne bien developpee, un exopodite rudimentaire aux premiers pereiopodes, une marge posterieure lisse sur les dactyles et les propodes des trois dernieres paires de pereiopodes ainsi que par des soies denses sur la marge concave de la pince des premiers pereiopodes. Le genre Pseudathanas partage ce dernier caractere avec cette nouvelle espece, mais deux epines sur la marge anterieure de la carapace et la dierese lisse exclut la nouvelle espece de ce genre. Cette nouvelle espece est un des Alpheidae remontant le plus vers le Nord, etant connue du sud de l'ile de Hokkaido. Il s'agit du second signalement d'une association entre un Alpheidae et un stomatopode.