On a new species of Trachypenaeus (Crustacea, Decapoda: Penaeidae) from the Philippines, with notes on related species

Abstract

Trachypenaeus villaluzi a new species of penaeid prawn from the Philippines is described in detail and compared with the related species. The new species is characterized by the following features : Mastigobranchia are present on the 2nd and 3rd pereiopods, but absent on the first ; anterior plate of thelycum is deeply concave ; the lower margin of the distolateral projections of the petasma is concave. It is also suggested that Trachypenaeus asper Alcock Should be considered as a valid species instead of being treated as a synonym of T. curvirostris (Stimpson).