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

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Trigonopterus echinatus Riedel

sp. n.

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.


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


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


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