Trigonopterus cuprescens 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: 20

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Trigonopterus cuprescens Riedel

sp. n.

Taxon classification Animalia Coleoptera Curculionidae

19. Trigonopterus cuprescens Riedel  sp. n.

Diagnostic description.

Holotype, male (Fig. 19a). Length 3.00 mm. Color of legs and antennae ferruginous; remainder black, pronotum and elytron bronze-coppery. Body in dorsal aspect with marked constriction between pronotum and elytron; in profile convex. Rostrum with median ridge; pair of submedian ridges converging and uniting on forehead; intervening furrows each with sparse row of suberect elongate scales; in apical third coarsely punctate; epistome with transverse, angulate ridge. Pronotum with sides subparallel, slightly converging; with distinct, subapical constriction; disk coarsely punctate, reticulate; each puncture containing brown recumbent seta; with pair of submedian impressions, medially swollen, with indistinct median ridge. Elytra with humeri swollen, laterally projecting; striae distinct, deeply impressed; intervals costate, punctate; punctures near base coarse and dense; near middle transverse band polished. Profemur simple; meso- and metafemur with anteroventral ridge forming large, acute tooth. Metafemur subapically with stridulatory patch. Dorsal tibial edge subbasally with indistinct angulation. Abdominal ventrite 5 flat, densely punctate, with erect setae. Penis (Fig. 19b) with sides of body subparallel; apex rounded, with fringe of conglutinate flattened setae, interrupted by glabrous median notch; transfer apparatus compact; apodemes 2.0 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.72-3.05 mm. Bronze color of pronotum and elytron with slightly greenish or reddish lustre. Female body more slender. Female rostrum dorsally punctate-rugose, with median and pair of submedian subglabrous costae; epistome simple. Female elytron with humeri less prominent, with subapical constriction and apex extended, suture with notch. Female abdominal ventrite 5 with sparse subrecumbent setae.

Material examined.

Holotype (MZB): ARC2235 (EMBL # LM655691), East Nusa Tenggara Prov., Flores, Labuhan Bajo, Tebedo, sample 1, S08°29.848', E119°59.633', 525 m, lowland forest, 14-III-2011. Paratypes (MZB, SMNK): Flores, Labuhan Bajo: 3 exx, ARC2233 (EMBL # LM655689), ARC2234 (EMBL # LM655690), same data as holotype; 1 ex, Roe, sample 4, S08°35.442', E120°00.366', 785 m, thick litter under Ficus  -tree, 13-III-2011; 1 ex, ARC2215 (EMBL # LM655671), Roe, earthworm-dominated habitat, sample 1, S08°36.540', E120°01.871', 955 m, 13-III-2011.


East Nusa Tenggara Prov., Flores (Labuhan Bajo). Elevation: 525-955 m.


This epithet is based on the Latin adjective cuprescens (coppery).


Trigonopterus cuprescens  Riedel, sp. n. was coded as " Trigonopterus  sp. 347".