The Indonesian species of Macrophthalmus Desmarest, 1823, with the description of a new species (Crustacea: Decapoda: Brachyura: Macrophthalmidae) Author Rahayu, Dwi Listyo Author Nugroho, Dharma Arif text Zootaxa 2012 3158 20 36 journal article 45671 10.5281/zenodo.211286 007f5089-4a23-4153-8699-671b54886883 1175-5326 211286 Macrophthalmus ( Mareotis ) crinitus Rathbun, 1913 ( Figs. 1 C, D) Macrophthalmus crinitus Rathbun, 1913 : 619 , pl. 75, fig. 3. Macrophthalmus ( Mareotis ) crinitus — Barnes 1971 : 22 , fig. 5; 2010: 41, fig. 3C. Not M. crinitus Barnes, 1967 (= M. darwinensis Barnes, 1971 ). Material examined. 1 male , (11.97 x 16.25 mm ) (RCLA-C.B.0261), Sekotong, Lombok, 30.07.2005 , 1 ovig. (11.45 x 16.36 mm ) ( MZB Cru 3272), Sekotong, Lombok, 16.05.2007 . Remarks. The specimen in this study agrees well with the description of the species given by Barnes (1971) . Barnes (2010) placed this species in M. crinitus group together with M. pacificus and M. darwinensis Barnes, 1971 . Macrophthalmus crinitus resembles M. darwinensis in having scattered granules on the branchial and hepatic regions of the carapace, which are obscured by short stiff setae, especially on the branchial region, one large and one small anterolateral teeth, and the presence of a mat of setae on the pereopod meri, carpi and propodi. Differences can be seen on the male chelipeds. In M. crinitus the fixed finger of the male chelipeds has a longitudinal ridge on the outer surface, and the cutting margin lacks a differentiated tooth, while in M. darwinensis the outer face of the fixed finger of the male chelipeds is without a longitudinal ridge and the cutting margin has long, crenulated teeth. Macrophthalmus pacificus differs from these two species in having a smooth dorsal surface of the carapace and the pereopod meri, carpi and propodi with only sparse setae. Habitat. Sandy mud substrate of seaward fringe of mangrove forest. Geographical distribution. Burma , Mergui Archipelago, eastern Indonesia ( Ambon , Ternate and Pulau Kaledupa, Sulawesi; Barnes 1971 , 2010), and now Lombok.