Trigonopterus selaruensis Narakusumo & Riedel

Narakusumo, Raden Pramesa, Balke, Michael & Riedel, Alexander, 2019, Seven new species of Trigonopterus Fauvel (Coleoptera, Curculionidae) from the Tanimbar Archipelago, ZooKeys 888, pp. 75-93 : 75

Trigonopterus selaruensis Narakusumo & Riedel sp. nov.

Diagnostic description.

Holotype: Female ( Fig. 6 .a) Length 2.95 mm. Color of antennae ferruginous, head and legs dark ferruginous, remainder black. Body subovate; in dorsal aspect with weak constriction between pronotum and elytron; profile dorsally convex. Eyes dorsally approximate. Rostrum in basal 1/3 with median ridge and pair of submedian ridges; with suberect white scales; in apical half dorsally flattened, subglabrous, punctate Pronotum densely punctate with small punctures. Elytra subglabrous; striae marked by rows of minute punctures; intervals subglabrous and with row of even smaller punctures; along base and behind humerus bordered by row of deep punctures. Femora with distinct anteroventral ridge, near middle with denticle. Mesofemur and metafemur dorsally densely squamose with white scales. Metafemur with smooth dorsoposterior edge; subapically without stridulatory patch. Abdominal ventrites 1-2 flat, subglabrous, sparsely punctate, with sparse scales; ventrite 5 flat, punctate, sublaterally with suberect scales. Genitalia ( Fig. 5b ).

Material examined.

Holotype (MZB): MZB0023 (GenBank # MN322592), Indonesia, Maluku, Tanimbar, Selaru Is, Bangruti, 08°07.253'S, 131°02.947'E, 35 m, beaten, 22-IV-2018.

Distribution.

Maluku Prov., Tanimbar (Selaru Is). Elevation 35 m.

Biology.

On foliage in lowland forest.

Etymology.

This epithet is an adjective derived from the species´ type locality, Selaru Island.

Notes.

This species is closely related to the undescribed Trigonopterus species 436 from Kai Kecil Island, from which it differs by a larger body size and a more densely punctate pronotum and an 8.9% p-distance of its cox1 sequence.

Figures

Figure 5. Trigonopterus selaruensis Narakusumo & Riedel, sp. nov., holotype a habitus b female genitalia.

Figure 6. Trigonopterus tanimbarensis Narakusumo & Riedel, sp. nov., holotype a habitus b penis.