Helochares (Hydrobaticus) sp. A, Short & Girón, 2018

Short, Andrew Edward Z. & Girón, Jennifer C., 2018, Review of the Helochares (Hydrobaticus) MacLeay of the New World (Coleoptera: Hydrophilidae: Acidocerinae), Zootaxa 4407 (1), pp. 29-50 : 48

publication ID	https://doi.org/ 10.11646/zootaxa.4407.1.2
publication LSID	lsid:zoobank.org:pub:B45E9ABD-CB52-4EE7-91D6-783E8E958AC5
DOI	https://doi.org/10.5281/zenodo.3803382
persistent identifier	https://treatment.plazi.org/id/676A87E0-FFB7-B159-2392-FE3F40CC0A31
treatment provided by	Plazi
scientific name	Helochares (Hydrobaticus) sp. A
status

Treatment

Helochares (Hydrobaticus) sp. A

Figs. 2E View FIGURE 2 , 5H View FIGURE 5 , 10B View FIGURE 10 .

Material examined (5). PERU: Jauja Province: Junin Department, Sani Beni (8 km. S. Satipo), 840 m., 17– 30.viii.1935, leg. F. Woytkowski (1: SEMC) ; same data but 16–21.vi.1935 (2: SEMC) ; Same data but 24.vi.1935, and with additional label that states, “Label data do not agree with field notes” (1: SEMC) ; “ Vic San Pedro ”, 900 m, 15–19.v.1935, muddy pools, leg. F. Woytkowski (1: SEMC; abdomen missing)

Differential diagnosis. Body size 5.2–5.5 mm. Clypeus appearing dark brown in median third, with lateral thirds distinctly paler ( Fig. 5H View FIGURE 5 ). Pronotum darkened on elytral disc ( Fig. 2E View FIGURE 2 ). Elytra with ten rows of serial punctures, usually appearing weakly impressed into striae. Abdominal ventrites uniformly dark brown; pubescence dense and evenly distributed, the longest hairs shorter than those on the metaventrite. Aedeagus unknown.

Distribution. Peru ( Fig. 10B View FIGURE 10 ).

Biology. The label data of one specimen indicates it was collected in a “muddy pool”.

Remarks. This species is known from 5 poorly preserved specimens, four of which are female (a fifth specimen is missing the abdomen and cannot be sexed). The specimens appeared to have become moldy some time ago, and all are missing parts of appendages. Though the specimens are distinct and intact enough for them to be easily diagnosed from the other six described species, we consider it is best to wait to describe this species until male specimens in better condition can be found. At present, these specimens represent the southern extent of the range of Hydrobaticus species in the New World.