A new species of Metrobates Uhler, 1871 (Hemiptera: Heteroptera: Gerridae) from Colombia.

A new species of Metrobates Uhler, 1871 (Trepobatinae: Metrobatini) from Colombia is described. Metrobates sanciprianensis sp. nov.

A new species of Mesovelia (Heteroptera: Gerromorpha: Mesoveliidae) from South America, with identification key and notes on Colombian species.

Mesovelia tuberculata sp. nov. is described and illustrated based on material from the Pacific Region of Colombia.