Hydrochus tarsalis Chevrolat

Perkins, Philip D., 2021, Taxonomy of water beetles in the genus Hydrochus Leach, 1817, from Bolivia, Brazil and Paraguay (Coleoptera: Hydrochidae), Zootaxa 4994 (1), pp. 1-93 : 52

Hydrochus tarsalis Chevrolat

Figs. 5 , 64

Hydrochus tarsalis Chevrolat 1863: 207

Hydrochus metallipes Knisch 1920 ; synonymy Perkins (2019a)

Originally described from Cuba.Additional locality data records have been published for Venezuela ( Perkins 2019c). Habitus and male genitalia images are given in Perkins (2019a, c). The following new locality and deposition data records are from Bolivia, Brazil and Paraguay.

Material examined (101): Bolivia: Beni, 1.7 km E of San Borja , (14°52’7’’S, 66°43’53’’W), 15.vii.1998, leg. K. B. Miller (13 SEMC) ; 40 km E. San Borja, Estacion Biologica Beni, Palm Camp at Rio Curiraba , (14°44’S, 66°40’W), 13.ix.1987, leg. W. E. Steiner (1 NMNH) ; 7 km SW Trinidad , elev. 163 m (14°52’12’’S, 64°57’32’’W), 18.vii.1998, leg. K. B. Miller (2 SEMC) ; Beni Stn., Palm Camp, NE. of San Borja , 6–9.viii.1988, leg. Robert W. Brooks (3 SEMC) ; Cercado Province , 9.5 km N of Trinidad, (14°46’34’’S, 64°58’0’’W), 17.vi.1999, leg. K. B. Mill- er (5 SEMC) ; Magdalena, El Portero , ca. 155 m a.s.l., elev. 155 m (13°9’7.27’’S, 64°1’28.56’’E), 18.vii.2004, leg. A. Megroz (4 NMW) ; Santa Cruz, Ayacucho , 13–14.v.1969, leg. P. & P. Spangler (1 CAS, 1 NMNH) ; Potrerillos del Guenda, Preserva Natural , elev. 370 m (17°40’S, 63°27’W), 1–4.x.2007, leg. Wappes & Morris (2 SEMC) ; same locality, 17–22.x.2007, leg. J. & F. Romero (2 SEMC) ; Santa Cruz, 11–12.v.1969, leg. P. & P. Spangler (1 CAS, 2 NMNH) . Brazil: Mato Grosso, Corumba , (17°32’S, 56°27’W), 21–23.ii.1954, leg. Gans & Pereira (20 NMNH) ; Salobra , 1–30.i.1955, leg. F. Lane (3 NMNH) ; Mato Grosso do Sul, Corumbá, Base de Estudos do Pantanal , c. 4 km N on MS-184 (-19.54081 -57.03975), 92m, 23.vi.2018, Marshy /gravely area with vegetation, leg. Hamada and team, BR18-0623-01A (1 INPA) ; Mato Grosso do Sul, Corumbá, Base de Estudos do Pantanal (-19.57708 - 57.01912), 97m, 22–24.vi.2018, Pools and marsh area around station buildings, leg. Hamada and team, BR18-0622- 04B (1 SEMC) ; Mato Grosso do Sul, Corumbá , (c. 29 km SE) on BR-262 (-19.3062 -57.60382), 25.vi.2018, Drying marsh with abundant vegetation and detritus, leg. Hamada and team, BR18-0625-02A (1 SEMC) . Paraguay: Dep. Central , Asuncion, 9.i.1992, leg. U. Drechsel (3 NMW) ; Dep. Pte. Hayes, Puerto Galileo , (25°8’S, 57°50’W), 27–29.viii.2005, leg. U. Drechsel (35 NMW) .

Figures

FIGURE 5. Dorsal habitus of Hydrochus species in study area.

FIGURE 64. Geographical distribution of H. tarsalis.