Although the description and figures of
S. armipes (Berlese 1904, Pl. I, fig. 14) are
poor, they are sufficient to differentiate it
from S. lekprayoonae n. sp., on the basis of
the structure of leg I, which has a prolonged
solenidion arising on the tubercle at the
dorso-distal end of tibia I, and the lack of
the hypertrophied setae behind the dorsal
concavity of tibia I. These character states
are also found in S. barbarus, S.
cuspidonasus, S. oculus and S. narinosus. In
S. lekprayoonae n. sp. all solenidia at the
distal end of tibia I are subequal in length,
there is no tubercle, and the hypertrophied
setae are present behind the dorsal concavity
of tibia I.