Trigonopterus rugosostriatus 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 : 62-63

Taxon classification Animalia Coleoptera Curculionidae

67. Trigonopterus rugosostriatus Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 67a). Length 2.40 mm. Color of legs and head ferruginous, remainder black. Body in dorsal aspect with marked constriction between pronotum and elytron; with distinct constriction in profile. Rostrum coarsely rugose-punctate, with median ridge and pair of indistinct submedian ridges; epistome with indistinct, transverse, subangulate ridge. Pronotum anterolaterally angularly projecting; with distinct subapical constriction; disk rugose-punctate, interspaces weakly microreticulate; punctures each with one suberect to recumbent scale becoming shorter towards base; with median ridge. Elytra with striae deeply impressed, each with row of slender suberect scales; intervals costate to carinate, almost nude, weakly microreticulate; interval 7 swollen subapically, laterally weakly projecting; sutural interval subapically simple. Femora edentate. Metafemur subapically with stridulatory patch and transverse ridge. Abdominal ventrite 5 in apical half slightly swollen, with median impression, punctate, sparsely setose. Penis (Fig. 67b) with body in profile moderately curved; in dorsal aspect sides subparallel; apex with median, acute triangular extension; transfer apparatus flagelliform, slightly shorter than body; apodemes 2.0 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.28-2.65 mm. Color of body black to dark ferruginous. Female rostrum dorsally with longitudinal furrows; epistome simple. Pronotum with anterolateral knobs rounded, or more distinct and angularly projecting, especially in females. Female abdominal ventrite 5 flat.

Material examined.

Holotype (MZB): ARC2672 (EMBL # LM655930), West Java Prov., Sumedang, Sukajadi, Mt. Cakrabuana, sample 4, S07°01.734', E108°08.059', 1530 m, 19-IV-2012. Paratypes (MZB, SMNK, ZSM): W-Java Prov.: 3 exx, ARC2673 (EMBL # LM655931), ARC2674 (EMBL # LM655932), ARC3591 (EMBL # LM656022), same data as holotype; 4 exx, ARC2675 (EMBL # LM655933), ARC2676 (EMBL # LM655934), ARC2677 (EMBL # LM655935), ARC3592 (EMBL # LM656023), Sumedang, Sukajadi, Mt. Cakrabuana, sam ple 5, S07°01.804', E108°08.044', 1563 m, 20-IV-2012; 1 ex, ARC2681 (EMBL # LM655939), Sumedang, Sukajadi, Mt. Cakrabuana, sample 6, S07°01.943', E108°08.029', 1593 m, 20-IV-2012; 1 ex, ARC2671 (EMBL # LM655929), Sumedang, Sukajadi, Mt. Cakrabuana, sample 3, S07°01.493', E108°08.065', 1394 m, 19-IV-2012; 5 exx, ARC0157, ARC0408, Ciamis, Mt. Sawal, Blok Cireong, sample 2, S07°14.127', E108°15.568', 1120 m, 01-X-2005; 3 exx, Batu Cakra, sample 1, S07°14.920', E108°15.762', 990 m, 01-X-2005; 3 exx, ARC2505 (EMBL # LM655842), ARC2506 (EMBL # LM655843), ARC2507 (EMBL # LM655844), Panjalu, Tembong, sample 3, S07°11.102', E108°16.310', 1569 m, 29-XI-2011.

Distribution.

W-Java Prov. (Mt. Cakrabuana, Mt. Sawal). Elevation: 990-1569 m.

Etymology.

This epithet is a combination of the Latin adjective rugosus (wrinkled) and the participle striatus (provided with furrows) and refers to the species´ body-sculpture.

Notes.

Trigonopterus rugosostriatus Riedel, sp. n. was coded as " Trigonopterus sp. 354".