Trigonopterus micans 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: 48-49

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Trigonopterus micans Riedel

sp. n.

Taxon classification Animalia Coleoptera Curculionidae

50. Trigonopterus micans Riedel  sp. n.

Diagnostic description.

Holotype, male (Fig. 50a). Length 2.97 mm. Color of legs and antennae ferruginous; pronotum and elytron reddish coppery; remainder dark ferruginous to black. Body in dorsal aspect with marked constriction between pronotum and elytron; in profile with weak constriction. Rostrum with median and pair of indistinct submedian ridges; intervening furrows each with row of coarse punctures and suberect elongate scales; epistome with indistinct transverse ridge forming small median denticle. Pronotum with sides subparallel; anteriorly rounded to subapical constriction; disk coarsely punctate, reticulate; with sparse recumbent, elongate, cream-colored scales, especially anteriorly; medially swollen, with median ridge. Elytra with humeri markedly swollen, laterally projecting; striae distinct, basally deeply impressed; intervals weakly costate, punctate; sutural interval in basal half distinctly swollen; punctures near base coarse and dense, near middle sparser with interspaces polished; each puncture containing minute, inconspicuous seta. Profemur with anteroventral ridge indistinct; in meso- and metafemur forming large, acute tooth. Metafemur subapically with stridulatory patch. Dorsal tibial edge subbasally with angulation. Thoracic and abdominal venter setose with long erect setae. Abdominal ventrite 5 weakly concave, densely punctate-rugose, with dense erect setae. Penis (Fig. 50b) subapically converging, with pair of setose brushes; subtruncate at middle; transfer apparatus small, compact; apodemes 2.7 × as long as body; ductus ejaculatorius with bulbus. Intraspecific variation. Length 2.20-2.97 mm. Color of pronotum and elytron ranging from dark bronze to a more vivid coppery. Female body more slender, humeri less prominent. Female rostrum dorsally punctate-rugose, with median and pair of submedian subglabrous costae; epistome simple.

Material examined.

Holotype (MZB): ARC2213 (EMBL # LM655669), East Nusa Tenggara Prov., Flores, Labuhan Bajo, Roe, earthworm-dominated habitat, sample 1, S08°36.540', E120°01.871', 955 m, 13-III-2011. Paratypes (MZB, SMNK, ZSM): 3 exx, ARC2214 (EMBL # LM655670), ARC2216 (EMBL # LM655672), same data as holotype; 3 exx, ARC2220 (EMBL # LM655676), ARC2221 (EMBL # LM655677), ARC2222 (EMBL # LM655678), Flores, Labuhan Bajo, Roe, sample 5, S08°35.395', E120°00.383', 790 m, 13-III-2011; 1 ex, ARC2230 (EMBL # LM655686), Flores, Labuhan Bajo, Roe, sample 3, S08°36.259', E120°01.539', 975 m, 13-III-2011.


East Nusa Tenggara Prov., Flores (Labuhan Bajo). Elevation: 790-975 m.


This epithet is based on the Latin adjective micans (shining) and refers to the metallic coloration of this species.


Trigonopterus micans  Riedel, sp. n. was coded as " Trigonopterus  sp. 348" by Tänzler et al. (2014).