Trigonopterus echinatus 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 : 29-30

Taxon classification Animalia Coleoptera Curculionidae

29. Trigonopterus echinatus Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 29a). Length 1.88 mm. Color of legs and head ferruginous; remainder black, pronotum dull, elytra with bronze lustre. Body subovate; in dorsal aspect and in profile with distinct constriction between pronotum and elytron. Rostrum in apical half granulate-punctate, in basal half with irregular median ridge and pair of submedian ridges; with sparse suberect scales; epistome with transverse, angulate ridge. Pronotum with shallow subapical constriction; disk coarsely punctate; each puncture containing erect clavate scale inserting at posterior rim; with short median ridge. Elytra with striae marked by deep punctures; in front of each puncture with elongate-claviform, erect scale; intervals weakly costate, subglabrous; interval 7 subapically forming denticulate ridge; sutural interval simple. Femora edentate. Metafemur subapically without stridulatory patch. Abdominal ventrite 5 flat, microreticulate, sparsely setose. Penis (Fig. 29b) with apex asymmetrically extended to the right; apical extension long; basal orifice ventrally without rim; apodemes short, 0.5 × as long as body; ductus ejaculatorius with bulbus. Intraspecific variation. Length 1.72-2.04 mm. Color of elytra with bronze lustre more or less distinct. Female rostrum dorsally in apical half subglabrous, with small punctures; epistome simple.

Material examined.

Holotype (MZB): ARC0204 (EMBL # LM655426), W-Java Prov., Ciamis, Mt. Sawal, Batu Cakra, sample 1, S07°14.920', E108°15.762', 990 m, 01-X-2005. Paratypes (MZB, SMNK): W-Java Prov.: 1 ex, ARC2503 (EMBL # LM655840), Ciamis, Panjalu, Tembong, Mt. Sawal, sample 1, S07°10.528', E108°16.423', 1314 m, sifted; 8 exx, ARC2696 (EMBL # LM655952), ARC2697 (EMBL # LM655953), ARC2698 (EMBL # LM655954), Garut, Cikajang, Mt. Payung, sample 1, S07°25.345', E107°48.825', 1085 m, 26-IV-2012.

Distribution.

W-Java Prov. (Mt. Payung, Mt. Sawal). Elevation: 990-1314 m.

Etymology.

This epithet is based on the Latin adjective echinatus (prickly) and refers to the species´ erect scales that resemble spines.

Notes.

Trigonopterus echinatus Riedel, sp. n. was coded as " Trigonopterus sp. 337".