Aquatic Coleoptera Of Singapore: Species Richness, Ecology And Conservation # Author Hendrich, Lars Author Balke, Michael text Raffles Bulletin of Zoology 2004 52 1 97 145 journal article 10.5281/zenodo.13244881 2345-7600 13244881 Orectochilus (Patrus) vitalisi smedleyi Ochs, 1929 Orectochilus vitalisi smedleyi Ochs, 1929: 403 . Material known . – Number? – Other areas - St. George Road, 10 Apr.1922 , coll. N. Smedley ( Ochs, 1929 ). Not seen. Distribution. – Singapore ( Ochs, 1929 ); Trengganu (West Malaysia ) (Mazzoldi in prep.). Ecology. – The habitat in Singapore is unknown. In West Malaysia the species was collected in clear and oxygen rich water of a fast flowing stream (Mazzoldi, in litt.).