Bibrax chocoensis, Tapuy-Avilés & Díaz-Guevara & Caterino, 2025

Bibrax chocoensis sp. nov.

Figs 1 D – F View Figure 1 , 2 C, D View Figure 2

Type material.

Holotype • ♂ ( MECN -EN 40872 ): “ Ecuador: Esmeraldas, 0.56759, -79.06351, Quinindé. Reserva Biológica Canandé . 400 m. 14-oct-2022. Winkler., A Pazmiño | D Díaz. ” / “ Caterino DNA voucher, Ext. MSC-13015, Morphosp. Can.A.001 ” / “ MECN -EN 40872 ”. GoogleMaps

Diagnosis.

BL = 1.79 mm (n = 1). Body densely setose, densely and finely punctate beneath; head rounded at base, vertexal foveae shallowly impressed; frons elevated, elongate to common antennal base, with shallow median sulcus on surface; eyes (of male) well developed, convex, with> 20 fine facets; gular teeth well-developed; antennae with scape very long, slightly sinuate, antennomere II (pedicel) as long as III-VI combined, III – VIII all bead-like, but V and VII larger, IX – XI forming loose club; pronotum elongate, widest near front, with lateral and median subbasal foveae, as well as row of small secondary foveae along basal margin; disk with lateral and median longitudinal impressions; elytra moderately elongate (winged) with sides rounded, each elytron with sutural and lateral foveae, lateral fovea with strong impression running posterad ~ 1 / 2 elytron length; subhumeral fovea absent; protibia swollen, with modified inner marginal spurs; last abdominal ventrite slightly flattened, densely setose on each side. Aedeagus (Fig. 2 C, D View Figure 2 ) with large basal bulb bearing prominent basal flange where it articulates with sternite VI; tegmen articulated with basal bulb, tubular at base, strongly arched dorsad, then curved distad and flattening and narrowing to subacute apex.

Distribution.

This species is known only from the coastal forests of Esmeraldas, Ecuador.

Remarks.

This species more closely resembles the described species, B. bradleyi in particular, in having large male eyes, apparently well-developed flight wings (at least in the male), and pronotum without lobed sides. Its pronotum is more elongate than either B. bradleyi or B. popeye , and it exhibits distinct secondary sexual characters of the protibial spurs, while lacking metatibial modifications.

Etymology.

The name of this species refers to the Chocó biodiversity hotspot, a biome largely limited to northwestern Ecuador and neighboring Colombia, where this species is found.