Hydrochus debilis Sharp

Perkins, Philip D., 2021, Taxonomy of Central American water beetles in the genus Hydrochus Leach, 1817 (Coleoptera: Hydrochidae), Zootaxa 4974 (3), pp. 459-503 : 474

Hydrochus debilis Sharp

Fig. 1 , 39

Hydrochus debilis Sharp 1882: 89 .

Originally described from Guatemala. New locality data records are given below. Images of the habitus and male genitalia, and detailed description of the male genitalia of the lectotype are given in Perkins (2020a) .

Material examined (16): Belize: Blue Creek Village , 30.vi.1981, leg. W. E. Steiner (1 NMNH) ; Belize, 48 km SW Belize City , 5.vii.1981, leg. W. E. Steiner (1 NMNH) ; Belize Dist., Hattieville , 7-8.vii.1968, leg. W. L. Hasse (6 NMNH) . Costa Rica: Guanacaste, Naciente de la Qu. Centeno Pocosol, elev. 200 m, 25.i.1997, leg. T. Goldschmidt (2 NMW) . Guatemala: Peten, Parque National El Rosario, E of Sayaxche , elev. 145 m (16°31’26.9’’N, 90°9’36.32’’W), 16.x.2017, leg. R. S. Zack (4 WSU) ; Parque National Yaxha , ENE El Remate, elev. 167 m (17°4’1.99’’N, 89°24’.72’’W), 13.iii.2017, leg. R. S. Zack (1 WSU) . Mexico: Veracruz, Los Tuxtlas area below La Palma, 15.v.1981, leg. Paul J. Spangler (2 NMNH) .

Differential diagnosis. Among Central American species, recognized by the combination of moderate size (ca. 2.69–3.08 mm), the densely punctate pronotum with deep foveae, the elytral sculpture, each elytron having four raised interstriae: 3 rd slightly raised over basal ¼, 4 th raised in area anterior to large callus of 5 th, 5 th raised from about anterior ¼ to midlength, plus the usual callus of 5 th, and the male genitalia. The male genitalia are distinctively different from that of other Central American Hydrochus .

Figures

FIGURE 1. Dorsal habitus of Central American Hydrochus species.

FIGURES 37–39. Geographical distribution maps.