Trigonopterus mesehensis Riedel

Riedel, Alexander, Taenzler, Rene, Balke, Michael, Rahmadi, Cahyo & Suhardjono, Yayuk R., 2014, Ninety-eight new species of Trigonopterus weevils from Sundaland and the Lesser Sunda Islands, ZooKeys 467, pp. 1-162: 47-48

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Trigonopterus mesehensis Riedel

sp. n.

Taxon classification Animalia Coleoptera Curculionidae

49. Trigonopterus mesehensis Riedel  sp. n.

Diagnostic description.

Holotype, male (Fig. 49a). Length 2.70 mm. Color of antennae ferruginous; legs dark ferruginous; remainder black. 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-costate, with median costa; with sparse, recumbent scales. Elytra with dense, confused punctation; intervals flat, each with row of punctures; each puncture containing small recumbent scale; elytral apex subtruncate. Femora with simple anteroventral ridge, crenate in metafemur. Metafemur subapically with stridulatory patch. Abdominal ventrite 5 coarsely punctate, with sparse suberect scales. Penis (Fig. 49b) with sides of body subparallel; apex with median angulate extension; transfer apparatus with flagelliform median rod forming almost full coil; median rod projecting basad further than apicad, ca 2.7 × as long as body; apodemes 3.4 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.11-2.88 mm. Color of elytra dark ferruginous to black. Female rostrum in apical half slender, dorsally subglabrous, with submedian rows of punctures, laterally punctate-rugose; epistome simple.

Material examined.

Holotype (MZB): ARC2250 (EMBL # LM655705), Bali, Negara, Kampung Pasatan, Desa Pohsanten, Mt. Mesehe, sample 2, S08°17.299', E114°41.494', 460 m, 17-III-2011. Paratypes (MZB, SMNK, ZSM): Bali, Negara, Kampung Pasatan, Desa Pohsanten, Mt. Mesehe: 5 exx, ARC2251 (EMBL # LM655706), same data as holotype; 6 exx, ARC2248 (EMBL # LM655703), ARC2249 (EMBL # LM655704), sample 1, S08°17.369', E114°41.392', 550 m, 17-III-2011; 15 exx, sample 3, S08°17.403', E114°41.424', 515 m, 17-III-2011; 5 exx, sample 4, S08°17.466', E114°41.331', 490 m, 17-III-2011; 1 ex, sample 6, S08°16.234', E114°41.528', 935 m, 18-III-2011; 3 exx, ARC2247 (EMBL # LM655702), S08°16.454', E114°41.725', 840 m, hand-collected from foliage, 18-III-2011; 26 exx, ARC 0727, ARC0728, ARC0729, ARC0732 (PCR failed), trail to Mesehe waterfall, S08°18.30', E114°41.68', 350-600 m, 14.&17.XII.2008; 8 exx, ARC2962 (EMBL # LM656015), sample 8, S08°16.454', E114°41.725', 825 m, 18-III-2011.


Bali (Mt. Mesehe). Elevation: 460-840 m.


This epithet is based on the type locality Mt. Mesehe.


Trigonopterus mesehensis  Riedel, sp. n. was coded as " Trigonopterus  sp. 334" by Tänzler et al. (2014).