Three new and a known species of Tylencholaimoidea (Nematoda: Dorylaimida) from Singapore Ahmad, Wasim Zootaxa 2010 2505 51 64 Pena-Santiago & Coomans, 1996 Pena-Santiago & Coomans 1996 [151,912,562,588] Adenophorea Dorylaimidae Tylencholaimus Animalia Dorylaimida 12 63 Nematoda species intermedius   Measurements: Table 2  Habitat and locality:Soil around roots of bushes and forest trees from Rifle Range Road, opposite Maurname reservoir, Singapore; collected on 27 August 2003.   Remarks:Peňa-Santiago & Coomans (1996)described  Tylencholaimus intermediusfrom Spain. Ahmad and Araki (2003)reported two females of this species from Japanand recently, Ahmad et al. (2009)recorded a single specimen from Korea. The present specimens from Singaporeconform well with the typespecimens as well as the Japanese and Korean specimens. It seems that this species is quite widely distributed in East and South East Asia. Recently, Andrássy (2009)transferred this species to the genus  Tantunemabecause of its small amphids and shape of lip region. We have examined this species from Japan, Koreaas well as the present one from Singapore. In all these specimens, the amphids are consistently cup-shaped with slit-like aperture and a postlabial sclerotization is present. The genus  Tantunemais characterized by the presence of a pore-like amphid and none of the three species presently described under this genus has post-labial sclerotozation. Hence, the placement of this species under  Tylencholaimusappears more justified.