Holotype, male (Fig. 43a). Length 2.50 mm. Color of antennae and legs ferruginous; remainder dark ferruginous. Body subovate, in dorsal aspect with weak constriction between pronotum and elytron; in profile dorsally convex. Rostrum with median ridge and pair of submedian ridges, intervening furrows each with sparse row of mesad directed scales; epistome with irregular transverse ridge. Pronotum coarsely punctate, reticulate, with median costa; with sparse, recumbent scales. Elytra with striae distinct, marked by rows of punctures; intervals weakly costate, with rows of punctures; sutural interval basally swollen, coarsely punctate; each puncture containing minute recumbent seta; elytral apex subtruncate, rounded. Femora with simple anteroventral ridge. Metafemur subapically with stridulatory patch. Abdominal ventrite 5 coarsely punctate, with sparse subrecumbent scales. Penis (Fig. 43b) with sides of body subparallel; apex with median angulate extension; transfer apparatus with thick median rod 2.0 × as long as body; median rod projecting basad further than apicad; apodemes 3.1 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.22–2.53 mm. Color of elytra ferruginous to black. Female rostrum in apical half dorsally subglabrous, sparsely punctate; epistome simple.

Holotype (MZB): ARC0595 (EMBL # LM655531), Bali, National Park, Mt. Klatakan, sample 1, S08°13.220', E114°29.509', 545 m, 12-XI-2007. Paratypes (MZB, SMNK): Bali National Park, Mt. Klatakan: 3 exx, ARC0596 (EMBL # LM655532), ARC0597 (EMBL # LM655533), ARC0598 (EMBL # LM655534), same data as holotype; 2 exx, ARC2954 (EMBL # LM656007), ARC2955 (EMBL # LM656008), sample 2, S08°13.029', E114°29.466', 600 m, 12-XI-2007; 7 exx, sample 3, S08°13.325', E114°29.477', 500 m, 12-XI-2007.

Bali (Mt. Klatakan). Elevation: 500–600 m.

This epithet is based on the type locality, Mt. Klatakan.

Trigonopterus klatakanensis Riedel, sp. n. was coded as “Trigonopterus sp. 285” by Tänzler et al. (2014).