Holotype. Male (BM0006), Indonesia, Irian Jaya, Sentani, Cyclops Mts., 300 m, Nov.–Dec. 1991 (LMBC). Paratypes. 3 females (BM0005, 0007, 00010), the same data as the holotype (LMBC).

Eniclases brancuccii resembles in color pattern three species: Eniclases elelimensis, Eniclases niger, and Eniclases variabilis. The last two of them are polymorphic and only some individuals share the color pattern with Eniclases brancuccii (Figs 12, 16, 24–25, 28–29). Eniclases niger differs in the large eyes and almost parallel-sided antennomeres 3–10 (Table 1, Figs 33–40). Eniclases elelimensis and Eniclases variabilis have similar antennae (Figs 38–39) and slightly larger eyes compared to Eniclases brancuccii, but reliable identification of these species can only be based on the DNA sequences. To the best of our knowledge, the similarly colored forms of these species do not occur together in a single locality.

Male. Body length 7.6–8.0 mm, robust, head, antennae, thorax, elytra, and abdomen dark brown to black, pronotum, scutellum, and basal parts of femora yellow to orange, apical parts of femora, tibiae, and tarsi dark brown. Head with small, hemispherically prominent eyes, their diameter equals minimum interocular distance, antennae flat, slender, acutely serrate, apical process of antennomere 3 about half length of its body, further antennomeres similar in shape. Pronotum transverse, with apparent bulge in basal third, almost parallel-sided between bulge and posterior angles, elytra with weak but regular secondary costae and mostly regular, quadrate, small cells.

New Guinea, Cyclops Mountains.

The specific name ‘brancuccii’ is proposed in honor of the late Michel Brancucci, a specialist in Dytiscidae and Cantharidae.