Trigonopterus satu 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 : 68-69

Taxon classification Animalia Coleoptera Curculionidae

73. Trigonopterus satu Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 73a). Length 1.90 mm. Color of tarsi and antennae ferruginous; remainder black. Body subovate; in dorsal aspect and in profile with distinct constriction between pronotum and elytron. Rostrum with median ridge and pair of submedian ridges; with sparse rows of suberect setae; epistome with transverse, angulate ridge. Pronotum with shallow subapical constriction; disk coarsely punctate, scabrous; each puncture containing erect clavate scale inserting at posterior rim; with median ridge. Elytra with striae marked by deep punctures; in front of each puncture with elongate-claviform, erect scale; intervals costate, subglabrous, weakly microreticulate; interval 7 subapically costate; sutural interval simple. Femora edentate. Metafemur subapically without stridulatory patch. Abdominal ventrite 5 flat, microreticulate, punctate, with sparse erect clavate scales. Penis (Fig. 73b) with apex asymmetrically extended to the left; apical extension of medium-size; basal orifice ventrally with rim; apodemes short, 0.5 × as long as body; ductus ejaculatorius with bulbus. Intraspecific variation. Length 1.90-2.11 mm. Color of body bright ferruginous or darker, almost black. Female rostrum dorsally in apical half subglabrous, densely punctate; epistome simple. Profile of elytral apex in females more slender than in males, more distinctly curved ventrad.

Material examined.

Holotype (MZB): ARC2331 (EMBL # LM655784), E-Java Prov., Banyuwangi Reg., Meru Betiri N.P., Sukamade, sample 2, S08°32.221', E113°51.985', 260 m, 12/13-IV-2011. Paratypes (MZB, SMNK, ZSM): E-Java Prov., Banyuwangi Reg., Meru Betiri N.P., Sukamade: 17 exx, ARC2328 (EMBL # LM655781), ARC2329 (EMBL # LM655782), ARC2330 (EMBL # LM655783), same data as holotype; 1 ex, sample 4, S08°32.163', E113°51.904', 340 m, 13-IV-2011.

Distribution.

E-Java Prov. (Meru Betiri N.P.). Elevation: 260-340 m.

Etymology.

This epithet is based on the Indonesian word for “one” and is treated as a noun in apposition.

Notes.

Trigonopterus satu Riedel, sp. n. was coded as " Trigonopterus sp. 341".