Cyphoderus (Cyphoderidae) as a major component of collembolan cave fauna in Thailand, with description of two new species

Distinguishing features of Cyphoderus Collembola of the bidenticulati group are described. Taxonomic problems in the bidenticulati group of Cyphoderus are emphasized, and new characters of taxonomic value are introduced and discussed. Two new species are described from caves of Thailand, differing mainly in claw morphology.