Based on combined evidence derived from mtDNA sequence, morphology and behavior, we here describe a new species of ocypodid crab of the genus Ilyoplax from the Philippines and Sulawesi (Indonesia), I. pacifica, new species. Morphologically, Ilyoplax pacifica

The phylogenetic relationships between 10 of 13 genera of crabs from the superfamily Dorippoidea were investigated using mitochondrial 16S rRNA, 12S rRNA and cytochrome c oxidase subunit I gene sequences. The resultant phylogenetic trees based on the

A molecular phylogeny is presented for the subfamily Dorippinae (including 9 individuals, representing 5 species and 4 genera), based on the sequence data from 16S rRNA gene. Two-cluster test between lineages in these phylogenetic trees has been performed.