Hydrochus piroei Makhan

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 : 49

Hydrochus piroei Makhan

Figs. 4 , 62

Hydrochus piroei Makhan, 1992: 97

Hydrochus bruggei Makhan, 1992: 102 ; synonymy Oliva (1996)

Originally described from Suriname. Additional published locality records are from Venezuela, Ecuador ( Perkins 2019c, 2020b), and Panama ( Perkins 2021). Habitus and male genitalia images are given in Perkins (2019c). New locality and deposition data for Bolivia and Brazil are given below. A widespread species in South America ( Fig. 62 ).

Material examined (41): Bolivia: Beni, Beni Stn., Palm Camp, NE. of San Borja , 6–9.viii.1988, leg. Robert W. Brooks (1 SEMC) ; Tumi Chucua, 16 km. SW. Riberalta , nr. Beni R., 1.x.1970, leg. W. Fitch (Stn. 3) (3 SEMC) ; Santa Cruz, 60 mi. N. Santa Cruz, Saavedra Exp. Sta. , 27–30.xii.1959, leg. Robert Cumming (13 NMNH) ; Potrerillos del Guenda, Preserva Natural , elev. 370 m (17°40’S, 63°27’W), 12–13.x.2007, leg. A. R. Cline (1 SEMC) ; Prov. Sara , 2 km NW of Santa Rosa, 21.ii.1969, leg. A. Martinez & R.E. Woodruff (2 NMNH) ; Santa Cruz, 11–12.v.1969, leg. P. & P. Spangler (1 NMNH) . Brazil: Amazonas , 20 km SW Itapiranga, 9.xi.1969, leg. JM & BA Campbell (1 CNC) ; Mato Grosso, Corumba -., leg. F. Plaumann [no date] (1 NMNH) ; Corumba [no other data], (17°32’S, 56°27’W) -. (3 NMNH) ; Varzea, Grande County, Cuiaba , Parque de Exposicao , 18.iii.1972, leg. W. H. Whitcomb (1 NMNH) ; same locality, 30.v.1972, leg. Roger Williams (1 NMNH) ; Minas Gerais, Pirapora , 1–30.xi.1975, leg. M. Alvarenga (1 CNC) ; Para, Faz. Taperinha , prox. Santarem, PA, 29.xii.1967 – 9.i.1968, leg. Faz. Taperinha (1 NMNH) ; Rio Grande do Norte, Ceara-Mirim , (5°38’S, 35°26’W), 6–7.vii.1969, leg. P. & P. Spangler (1 NMNH) .

Remarks. I have examined the holotype, including the male genitalia, of H. bruggei Makhan , and concur with Oliva (1996) that H. bruggei is a junior synonym of H. piroei Makhan.

Figures

FIGURE 4. Dorsal habitus of Hydrochus species in study area.

FIGURES 61–62. Geographical distributions. 61. H. kellymilleri. 62. H. piroei.