 The species has an extent of occurrence of nearly 200 km2, but an area of occupancy of 6 km2; the connectivity of this karst systems is unknown, some caves are definitely connected.The species is found in eight of the caves.It has been recorded from the Susa (from where it was first collected in May 1985) and Tham Mae Lana (Borowsky and Vidthayanon 2001).