Three new and exceptional Damarchus species from Thailand (Araneae: Bemmeridae).

Damarchus pylorus sp. nov., D.

Descriptions of four new trapdoor spider species in the subfamily Ummidiinae from Thailand (Araneae, Mygalomorphae, Halonoproctidae).

Males and females of four mygalomorph spider species (family Halonoproctidae, subfamily Ummidiinae) are newly described from Thailand, and the taxonomy of Ummidiinae is discussed. This is the first time that trapdoor spider species in this subfamily are described from Thailand. Two of these new species belong to the genus Conothele, the other two species are placed in the genus Latouchia.

Three new Prothemenops species (Araneae: Idiopidae) from central Thailand.

Prothemenops irineae sp. n., P.

On two Liphistius species (Araneae: Liphistiidae) from Laos.

Two mesothelid trapdoor spider species, Liphistius isan Schwendinger, 1998 and L. laoticus sp. n.