Namtokocoris, Sites, 2007

Polhemus, Dan A. & Polhemus, John T., 2013, Guide To The Aquatic Heteroptera Of Singapore And Peninsular Malaysia. Xi. Infraorder Nepomorpha- Families Naucoridae And Aphelocheiridae, Raffles Bulletin of Zoology 61 (2), pp. 665-686 : 673

Genus NAMTOKOCORIS Sites, 2007

Discussion. — The genus Namtokocoris is endemic to Indochina, being represented by five species (Sites & Vitheepradit, 2007). Members of the genus inhabit seeping rheocrenes, often in proximity to waterfalls, and are easily recognised by the character states of the foreleg, the apex of which bears only a single tarsal segment in both sexes with only a single apical claw present ( Fig. 22 ); by the anteriorly divergent interocular space ( Fig. 22 ); and by the prominent scutellar tubercles. Although currently unknown south of the Isthmus of Kra, Namtokocoris does occur in the southern peninsula of Thailand, therefore one or more species of could conceivably occur in the mountains of the northern Peninsular Malaysia, where they should be searched for on vertical or sloping wet bedrock faces. Previous records of the Indian and Ceylonese genus Diaphorocoris from Indochina, based on a single female unidentified as to species ( Chen et al., 2005), are in fact referable to Namtokocoris (Sites & Zettel, 2011) .

Figures

Fig. 22. Namtokocoris kem Sites & Vitheepradit, male, dorsal habitus, specimen from Vietnam, Quang Ngai Prov., Via Lac Pass (Young Sohn illustration).