Hydrometra, Latreille, 1796

Martínez, David Camilo, Galindo-Malagón, Ximena Alejandra, Molano, Fredy & Moreira, Felipe Ferraz Figueiredo, 2019, Descriptions, records, and key to the Hydrometra Latreille, 1796 (Hemiptera: Heteroptera: Hydrometridae) from Colombia, Zootaxa 4577 (1), pp. 51-72 : 68

publication ID	https://doi.org/ 10.11646/zootaxa.4577.1.3
publication LSID	lsid:zoobank.org:pub:B9C303DF-E585-46BF-8C29-6CA6FE968B4C
DOI	https://doi.org/10.5281/zenodo.5933562
persistent identifier	https://treatment.plazi.org/id/366387E2-D901-010B-B7E0-3AF545E97419
treatment provided by	Plazi
scientific name	Hydrometra
status

Treatment

Key to the species of Hydrometra View in CoL from Colombia

1. Anterior margin of clypeus excavated ( Fig. 9c View FIGURE 9 ); all acetabula without circular pits................... Hydrometra comata View in CoL

-. Anterior margin of clypeus not excavated ( Figs. 1b View FIGURE 1 , 2b View FIGURE 2 , 3b View FIGURE 3 , 4b View FIGURE 4 , 5b View FIGURE 5 , 6b View FIGURE 6 , 9 View FIGURE 9 a–b, 9d–e); at least pro- and mesoacetabula with circular pits ( Figs. 1d View FIGURE 1 , 2d View FIGURE 2 , 3d View FIGURE 3 , 4d View FIGURE 4 , 5c View FIGURE 5 , 6d View FIGURE 6 )....................................................................... 2

2. Pro- and mesoacetabula with at most 7 circular pits each ( Figs. 5c View FIGURE 5 , 6d View FIGURE 6 )........................................... 3

-. Pro- and mesoacetabula with at least 13 circular pits each ( Figs. 1d View FIGURE 1 , 2d View FIGURE 2 , 3d View FIGURE 3 , 4d View FIGURE 4 ).................................... 5

3. Metacetabulum without circular pits; male abdominal sternum VII with a pair of spinose projections anteriorly ( Figs. 10 View FIGURE 10 a–b).................................................................................... Hydrometra argentina View in CoL

-. Metacetabulum with circular pits ( Fig. 5c View FIGURE 5 , Fig. 6d View FIGURE 6 ); male abdominal sternum VII with brushes, setae, depression or subconical processes............................................................................................ 4

4. Clypeus broad, with anterior margin rounded ( Fig. 6b View FIGURE 6 ); pro- and mesoacetabula with 2–5 circular pits each ( Fig. 6d View FIGURE 6 ); metacetabulum with 2–6 circular pits ( Fig. 6d View FIGURE 6 ); male abdominal sternum VII with several shining long setae ( Figs. 6 View FIGURE 6 e–f).............................................................................................. Hydrometra adnexa View in CoL

-. Clypeus conate, with anterior margin projected centrally ( Fig. 5b View FIGURE 5 ); pro- and mesoacetabula with 5–7 circular pits each ( Fig. 5c View FIGURE 5 ); metacetabulum with 10–13 circular pits ( Fig. 5c View FIGURE 5 ); 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 View FIGURE 10 g–h)......................................................................................... Hydrometra williamsi View in CoL

5. Clypeus very broad, with sides parallel ( Fig. 9e View FIGURE 9 ); male abdominal sternum VII with a pair of short, mammilose projections near anterior margin ( Figs. 10 View FIGURE 10 e–f); male abdominal segment VIII with a tubercle covered by setae on each side ( Figs. 10 View FIGURE 10 e–f)… Hydrometra olallai View in CoL

-. Clypeus narrower, with sides rounded or converging anteriorly ( Figs. 1b View FIGURE 1 , 2b View FIGURE 2 , 3b View FIGURE 3 , 4b View FIGURE 4 , 9b, 9d View FIGURE 9 ); male abdominal sternum VII with a pair of brushes of setae ( Figs. 1 View FIGURE 1 e–f, 10c–d, 10i–j) or a pair of subconical processes ( Figs. 3 View FIGURE 3 e–f, 4e–f); male abdominal segment VIII with or without lateral tubercles.................................................................. 6

6. Clypeus with anterior margin pointed ( Figs. 9b, 9d View FIGURE 9 ). General color always brown................................... 7

-. Clypeus with anterior margin rounded ( Figs. 1b View FIGURE 1 , 2b View FIGURE 2 , 3b View FIGURE 3 , 4b View FIGURE 4 ). General color yellow, yellowish brown or brown............ 8

7. Clypeus with an angular median projection anteriorly ( Fig. 9d View FIGURE 9 ); male abdominal sternum VII with brushes located on the posterior half of the segment ( Figs. 10 View FIGURE 10 i–j).................................................... Hydrometra guianana View in CoL

-. Clypeus with a blunt median projection anteriorly ( Fig. 9b View FIGURE 9 ); male abdominal sternum VII with brushes located on the middle of the segment ( Figs. 10 View FIGURE 10 c–d)............................................................. Hydrometra caraiba View in CoL

8. General color yellow or yellowish brown ( Figs. 1 View FIGURE 1 , 2 View FIGURE 2 , 3 View FIGURE 3 ); dorsal interocular groove present............................ 9

-. General color dark brown ( Fig. 4 View FIGURE 4 ); dorsal interocular groove absent; male abdominal sternum VII with a pair of subconical processes ( Figs. 4 View FIGURE 4 e–f). Female unknown.......................................... Hydrometra quimbaya sp. nov.

9. General color yellow ( Fig. 3 View FIGURE 3 ); clypeus broader, with lateral and posterior margins rounded ( Fig. 3b View FIGURE 3 ); dorsal and ventral interocular groove shallow; male abdominal sternite VII with a pair of subconical processes ( Figs. 3 View FIGURE 3 e–f). Female unknown...................................................................................... Hydrometra tayrona sp. nov.

-. General color yellowish brown ( Figs. 1 View FIGURE 1 , 2 View FIGURE 2 ); clypeus narrower, with lateral margins straight ( Figs. 1b View FIGURE 1 , 2b View FIGURE 2 ); dorsal and ventral interocular groove deep; brushes of male abdominal sternite VII subrectangular ( Figs. 1 View FIGURE 1 e–f)..................................................................................................... Hydrometra colombiana sp. nov.