Hydroscapha andringitra, Perkins & Bergsten, 2019

Perkins, Philip D. & Bergsten, Johannes, 2019, New Myxophagan water beetles from Madagascar (Coleoptera: Torridincolidae, Hydroscaphidae), Zootaxa 4657 (1), pp. 57-96 : 85

Hydroscapha andringitra new species

Figs. 26 (habitus), 28 (aedeagus), 30, 32, 33 (terminal abdominal segments), 39 (map)

Type Material: Holotype (male): Fianarantsoa, Ambilavao, Sendrisoa , approx. 10km N of Andringitra NP, hygropetric, brownish muddy water seeping over rock (+ standing water with vegetation next to it), 22.00975S, 46.9504E, elev. 1165m, 7.v.2006, leg. J. Bergsten ( NHRS) . Paratypes: 10 females, same data as holotype ( NHRS, MCZ, BMNH, PBZT / MBC) .

Differential diagnosis. Habitus as in Fig. 26 (imaged pre-dissection). Slightly larger in size than H. saboureaui (length to elytral apices ca. 0.82 vs. 0.79 mm), but with a smaller aedeagus, which has a much smaller internal sac ( Figs. 27, 28 ). Also refer to the differential diagnosis of H. saboureaui , and see comparative notes following that species.

Description (holotype male): Size (mm): length to elytral apices 0.82, total length 0.99 (variable due to telescoping last abdominal segments), width 0.46. Color dark brown to black, with legs, palpi and antennae lighter, testaceous in parts.

Habitus as illustrated ( Fig. 26 ). Aedeagus and terminal abdominal segments as illustrated ( Figs. 28 , 30, 32-33 ). Dorsum very finely sparsely punctate and with very indistinct short sparse setae. Configuration of ventral morphology typical for the genus. See comparative notes in section on H. saboureaui .

Figures

FIGURES 26. Hydroscapha andringitra, habitus of holotype.

FIGURES 27–28. (27) Hydroscapha saboureaui, male genitalia of holotype, lateral view; (28) Hydroscapha andringitra, male genitalia of holotype, dorsal and lateral views.

FIGURES 29–33. (29–30) Hydroscapha males, ventrites and tergites. (29) H. saboureaui, holotype; (30) H. andringitra, holotype. (31– 33) Hydroscapha females, terminal abdominal segments. (31) H. saboureaui, last abdominal segments, right side, dorsal aspect (from Paulian 1949); (32) H. andringitra, last abdominal segments, right side, dorsal aspect; (33) H. andringitra, last visible ventrite.