Hydrochus jenniferiduae Makhan, 2021

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 : 45

Hydrochus jenniferiduae Makhan , new status

Figs. 2 , 39

Hydrochus jenniferiduae Makhan 1995: 192

Hydrochus zicsii Makhan ; Oliva 1996; incorrect synonymy by Oliva (1996)

Originally described from Paraguay. Images of the habitus and male genitalia are given herein ( Fig. 39 ). New records from Brazil and Paraguay are given below.

Material examined (7): Brazil: Santa Catarina, Nova Teutonia , elev. 300–500 m (27°11’S, 52°28’W), 1– 29.ix.1972, leg. Fritz Plaumann (2 NMNH) . Paraguay: Dep. Boqueron, Mistolar , (23°13’S, 61°41’W), 3–12.x.1997, leg. Drechsel (1 NMW) ; Dep. Caaguazu, Tayao , 7.iii.1999, leg. U. Drechsel (2 NMW) ; Paraquari, Ybycui (25 km SE), in Ybycui National Park , 12–24.iv.1980, leg. P. J. Spangler et al. (1 NMNH) .

Remarks. I have examined the holotypes, including the male genitalia, of H. jenniferiduae (NMW) , and H. zicsii (HMNH) and conclude without doubt that they represent different species. The specimen imaged ( Fig. 39 ) has this locality data: Dep. Caaguazu, Tayao, 7.iii.1999, leg. U. Drechsel. The holotype of H. jenniferiduae Makhan is in poor condition: partly disarticulated due to poor technique by a prior worker.

Figures

FIGURE 2. Dorsal habitus of Hydrochus species in study area.

FIGURES 38–39. Habitus and male genitalia. 38. Hydrochus liquidus n. sp., holotype. 39. Hydrochus jenniferiduae Makhan.