Revision of the oriental bamboo-inhabiting semiaquatic bug genus Lathriovelia Andersen, 1989 (Heteroptera : Veliidae) with description of L-rickmersi, new species, and notes on the genus Baptista distant, 1903

The Oriental semiaquatic bug genus Lathriovelia Andersen is revised. A comp arison is made with the closely related genus Baptista Distant. A new speci es, L. rickmersi, is described and L. collaris Andersen transferred to Bapt ista. Lathriovelia at present contains two species, L. capitata Andersen fr om Peninsular Malaysia and L. rickmersi, new species, occurring in Thailand , Peninsular Malaysia, Sabah and Sumatra. Both Microveliinae inhabit water- filled internode cavities of various bamboo species. The bugs enter the int ernodes through small holes in the culm wall bored by insects or woodpecker s. The highest internode colonized by a Lathriovelia was 18 m above ground. Both species mainly feed on collembolans or insects trapped on the water s urface.