Descriptions, records, and key to the Hydrometra Latreille, 1796 (Hemiptera: Heteroptera: Hydrometridae) from Colombia Author Martínez, David Camilo Author Galindo-Malagón, Ximena Alejandra Author Molano, Fredy Author Moreira, Felipe Ferraz Figueiredo text Zootaxa 2019 2019-04-04 4577 1 51 72 journal article 27399 10.11646/zootaxa.4577.1.3 0ebdd44c-54d8-45f3-a351-e45613035393 1175-5326 2628590 B9C303DF-E585-46BF-8C29-6CA6FE968B4C Key to the species of Hydrometra from Colombia 1. Anterior margin of clypeus excavated ( Fig. 9c ); all acetabula without circular pits................... Hydrometra comata -. Anterior margin of clypeus not excavated ( Figs. 1b , 2b , 3b , 4b , 5b , 6b , 9 a–b, 9d–e); at least pro- and mesoacetabula with circular pits ( Figs. 1d , 2d , 3d , 4d , 5c , 6d )....................................................................... 2 2. Pro- and mesoacetabula with at most 7 circular pits each ( Figs. 5c , 6d )........................................... 3 -. Pro- and mesoacetabula with at least 13 circular pits each ( Figs. 1d , 2d , 3d , 4d ).................................... 5 3. Metacetabulum without circular pits; male abdominal sternum VII with a pair of spinose projections anteriorly ( Figs. 10 a–b).................................................................................... Hydrometra argentina -. Metacetabulum with circular pits ( Fig. 5c , Fig. 6d ); male abdominal sternum VII with brushes, setae, depression or subconical processes............................................................................................ 4 4. Clypeus broad, with anterior margin rounded ( Fig. 6b ); pro- and mesoacetabula with 2–5 circular pits each ( Fig. 6d ); metacetabulum with 2–6 circular pits ( Fig. 6d ); male abdominal sternum VII with several shining long setae ( Figs. 6 e–f).............................................................................................. Hydrometra adnexa -. Clypeus conate, with anterior margin projected centrally ( Fig. 5b ); pro- and mesoacetabula with 5–7 circular pits each ( Fig. 5c ); metacetabulum with 10–13 circular pits ( Fig. 5c ); male abdominal sternum VII with a very large oval depression on each side of the midline, the depressions fringed with setae which are longer and stiffer on the anterior margin ( Figs. 10 g–h)......................................................................................... Hydrometra williamsi 5. Clypeus very broad, with sides parallel ( Fig. 9e ); male abdominal sternum VII with a pair of short, mammilose projections near anterior margin ( Figs. 10 e–f); male abdominal segment VIII with a tubercle covered by setae on each side ( Figs. 10 e–f)… Hydrometra olallai -. Clypeus narrower, with sides rounded or converging anteriorly ( Figs. 1b , 2b , 3b , 4b , 9b, 9d ); male abdominal sternum VII with a pair of brushes of setae ( Figs. 1 e–f, 10c–d, 10i–j) or a pair of subconical processes ( Figs. 3 e–f, 4e–f); male abdominal segment VIII with or without lateral tubercles.................................................................. 6 6. Clypeus with anterior margin pointed ( Figs. 9b, 9d ). General color always brown................................... 7 -. Clypeus with anterior margin rounded ( Figs. 1b , 2b , 3b , 4b ). General color yellow, yellowish brown or brown............ 8 7. Clypeus with an angular median projection anteriorly ( Fig. 9d ); male abdominal sternum VII with brushes located on the posterior half of the segment ( Figs. 10 i–j).................................................... Hydrometra guianana -. Clypeus with a blunt median projection anteriorly ( Fig. 9b ); male abdominal sternum VII with brushes located on the middle of the segment ( Figs. 10 c–d)............................................................. Hydrometra caraiba 8. General color yellow or yellowish brown ( Figs. 1 , 2 , 3 ); dorsal interocular groove present............................ 9 -. General color dark brown ( Fig. 4 ); dorsal interocular groove absent; male abdominal sternum VII with a pair of subconical processes ( Figs. 4 e–f). Female unknown.......................................... Hydrometra quimbaya sp. nov. 9. General color yellow ( Fig. 3 ); clypeus broader, with lateral and posterior margins rounded ( Fig. 3b ); dorsal and ventral interocular groove shallow; male abdominal sternite VII with a pair of subconical processes ( Figs. 3 e–f). Female unknown...................................................................................... Hydrometra tayrona sp. nov. -. General color yellowish brown ( Figs. 1 , 2 ); clypeus narrower, with lateral margins straight ( Figs. 1b , 2b ); dorsal and ventral interocular groove deep; brushes of male abdominal sternite VII subrectangular ( Figs. 1 e–f)..................................................................................................... Hydrometra colombiana sp. nov.