Novochares garfo, Short & Girón, 2023

Short, Andrew Edward Z. & Giron, Jennifer C., 2023, Revision of the Neotropical water scavenger beetle genus Novochares Giron & Short (Coleoptera, Hydrophilidae, Acidocerinae), ZooKeys 1171, pp. 1-112 : 1

Novochares garfo sp. nov.

Figs 12G-J , 13B

Type material.

Holotype (male): "BRAZIL: Roraima: Caroebe/ 00°50.939'N, 59°18.262'W; 145m/ Rio Jatapu, nr. Usina de Jatapu;/ marginal pools of river; 17.i.2018/ leg. A. Short; BR18-0117-02A (INPA). Paratypes (11 exs.): Brazil: Amazonas: Manacapuru, -3.23037, -60.64269, 35 m, 9.vi.3017, leg. Benetti, margin of large marsh, BR17-0609-01A (1, SEMC, DNA voucher SLE1263); Presidente Figueiredo, (ca. 19 km E) on AM-240, Igarape Pantera, -2.04243, -59.84914, 17.i.2018, leg. Short, margin of small side stream, vegetation, and detritus, BR18-0617-01A (1, SEMC, DNA voucher SLE1931). Mato Grosso do Sul: Miranda (ca. 9.5 km SW) on MS-339, -20.32119, -56.42563, 131 m, 26.vi.2018, leg. Hamada & team, marshy area alongside stream, BR18-0626-03A (3, SEMC, including DNA voucher SLE2103). Pará: Rio Xingu Camp, ca. 60 km S. Altamira, Igarape Jabuti, 8-16.x.1986, leg. P. Spangler & O. Flint, malaise trap (2, USNM). Roraima: Same data as holotype (3, INPA, SEMC). Bolivia: Santa Cruz: 3.7 km SSE Buena Vista, Hotel Flora y Fauna, 1-12.v.2004, leg. A.R. Cline, MV+HG lights (1, SEMC).

Differential diagnosis.

See differential diagnosis of N. furcatus .

Description.

Body length 4.9-5.8 mm. Coloration: Dorsal surfaces pale (yellowish) brown, usually with slightly paler (yellow) clypeus and margins of pronotum and elytra. Head: Maxillary palps slightly longer than width of head, uniformly yellow in color. Thorax: Elytra without rows of serial punctures, each with very faint rows of scarce and weakly marked systematic punctures on lateral and posterior regions. Prosternum medially broadly and weakly convex. Posterior elevation of mesoventrite somewhat transverse and broadly elevated, with low and glabrous longitudinal ridge extending anteriorly. Abdomen: Apical emargination of fifth ventrite relatively deep, U- or V-shaped. Aedeagus: (Fig. 12G-J ) Overall shape pear-like, 2.1 × longer than wide, with outer lateral margins of parameres evenly convex up to apical region; joint basal margins of parameres medially emarginate in dorsal view; apical region of each paramere rounded, partly membranous, with outer margin ventro-laterally pointed; at closest point (near base of neck), dorsal inner margins of parameres separated by distance 0.8 × greatest width of a paramere; dorsal plate of median lobe with neck 0.38 × as broad as base; base of arms of dorsal plate of median lobe dorsally concave; arms of dorsal plate parallel, parallel-sided along entire length, nearly 0.1 × length of dorsal plate of median lobe; each arm acute and dorsally pointed at apex; notch between arms at base slightly narrower than base of an arm; basal piece nearly 0.31 × length of a paramere. In lateral view, aedeagus weakly oblique at base, with ventral outline of parameres 3.3 × longer than greatest width near base; dorsal outline of aedeagus in lateral view very weakly convex along basal 1/2, then concave along distal 1/2; ventral outline of aedeagus in lateral view nearly straight.

Etymology.

Garfo, meaning fork in Portuguese, in reference to the shape of the dorsal plate of the median lobe.

Distribution.

Brazil (Amazonas, Mato Grosso do Sul, Pará, Roraima), Bolivia (Fig. 13B ).

Habitat.

This species has been collected in open marshes as well as along the margins of open rivers.

Figures

Figure 12. Aedeagi of the Novochares garfo species group A-C N. bidens D-F N. furcatus G-J N. garfo K-M N. tenedor A, D, G, K dorsal view B, E, H, L ventral view C, I, M lateral view F, J oblique view.

Figure 13. Distribution of Novochares spp. A N. aperito (red), N. minor (yellow), N. orchis (blue) B N. bidens (red), N. furcatus (yellow), N. garfo (blue), N. tenedor (green).