Monochorhynchus wahri Muir 1917

Monochorhynchus wahri Muir, 1917 Monochorhynchus wahri Muir, 1917: 217. Differential diagnosis Monochorhynchus whari can be separated from the three new species by several key characters: 1) body brownish (whereas dark brown in M. dehongensis sp. nov. and M. obscurus sp. nov.); 2) pygofer with medioventral process angular (whereas round in M. dehongensis and truncated in M. psammochroma sp. nov.); 3) in profile, anal tube with apex curved caudad and single (whereas relatively straight in all three new species, and bifurcated in M. psammochroma). Remarks Monochorhynchus whari is the type species of the genus, distributed in Borneo. Due to the difficulty in obtaining the type material, a direct comparison with the new species described here was not possible; consequently, our understanding of M. whari is based solely on the original description and illustrations by Muir (1917).