Abstract
Sinocallipus thai sp.n, is described from Saraburi Province, Thailand. This is the second species in the suborder Sinocallipodidea Shear, 2000, hitherto known only from S. simplipodicus, discovered in a cave in Yunnan, southern China. Although there are just a few differences in the structure of the gonopods, the new species can be easily distinguished from its congener by the larger number of ocelli and pleurotergites, the relative length of antennae, shape of antennomere 7, body coloration, etc. There also seems to be a habitat differentiation, S. simplipodicus is known only from a cave, while the unique specimen of Sinocallipus thai was collected under a rock and accordingly does not show any particular troglomorphic traits. The putative record of S. simplipodicus from Laos (Shear et al., 2003, Zootaxa, 365, 1–20) is discussed in the light of the new finding
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