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Holotype, male (Fig. 55a). Length 2.16 mm. Color of antennae and legs ferruginous, remainder black. Body subovate, in dorsal aspect with weak constriction between pronotum and elytron; with distinct constriction in profile. Rostrum with median ridge and pair of submedian ridges, intervening furrows each with sparse row of mesad directed scales; epistome with irregular transverse ridge. Pronotum without subapical constriction; disk with coarse irregular ridges and tubercles, with sparse, suberect scales. Elytra with striae deeply impressed, each with sparse row of slender, suberect scales; intervals costate, intervals 3 and 5 with row of punctures, others subglabrous; sutural interval basally swollen and widened laterad; suture incised, bordered by rows of suberect scales; elytral apex scabrous, margin rounded, without apical denticle. Femora with simple anteroventral ridge, in meso- and metafemur crenate. Metafemur subapically with stridulatory patch. Abdominal ventrite 5 dull, with T-shape ridge along base and middle, coarsely punctate, with sparse erect scales. Penis (Fig. 55b) with sides of body weakly concave; apical edge subangulate, with sparse fringe of setae; apex with rounded median extension; transfer apparatus compact; apodemes 2.0 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.16–2.38 mm. Color of elytra completely black, with ferruginous sutural interval, or entirely ferruginous. Female rostrum in apical third dorsally subglabrous, sparsely punctate; epistome simple. Female elytra ventroapically with pair of laterally flattened denticles, male elytra ventroapically simple; elytral apex in Mesehe-specimen with median suture incised. Female abdominal ventrite 5 medially with weak ridge.
Holotype (MZB): ARC0585 (EMBL # LM655521), Bali, Bedugul, Tamblingan, above the village along water pipe, sample 4, S08°15.854', E115°05.312', 1310 m, 06-XI-2007. Paratypes (MZB, SMNK, ZSM): Bali: 2 exx, ARC0584 (EMBL # LM655520), same data as holotype; 2 exx, ARC3586 (EMBL # LM656019), ARC3587, Tamblingan, sample 2, S08°15.015', E115°06.202', 1255 m, 06-XI-2007; 2 exx, ARC2315 (EMBL # LM655768), ARC2316 (EMBL # LM655769), Tamblingan, sample 5, S08°15.108', E115°05.573', 1350 m, 03-IV-2011; 1 ex, ARC2306 (EMBL # LM655759), Mt. Batukaru, Wangayagede, sample 3, S08°21.431', E115°05.699', 1170 m, 31-III-2011; 2 exx, ARC2310 (EMBL # LM655763), ARC2311 (EMBL # LM655764), Mt. Batukaru, Wangayagede, sample 5, S08°21.130', E115°05.321', 1520 m, 31-III-2011; 1 ex, ARC2255 (EMBL # LM655709), Negara, Kampung Pasatan, Desa Pohsanten, Mt. Mesehe, sample 8, S08°16.454', E114°41.725', 825 m, 18-III-2011, sifted.
Bali (Mt. Batukaru, Mt. Mesehe, Tamblingan). Elevation: 825–1520 m.
This epithet is based on a combination of the Greek prefix para- (next to; near by) and the specific epithet of Trigonopterus rugosus Riedel, sp. n., a sibling species.
Trigonopterus pararugosus Riedel, sp. n. was coded as “Trigonopterus sp. 327” by Tänzler et al. (2014). The interspecific p-distance of cox1 to Trigonopterus rugosus Riedel, sp. n. is 5.6–7.2%. Morphologically no clear differences could be detected and it is assumed that both represent a pair of cryptic species.
- Riedel, A; Tänzler, R; Balke, M; Rahmadi, C; Suhardjono, Y; 2014: Ninety-eight new species of Trigonopterus weevils from Sundaland and the Lesser Sunda Islands ZooKeys, (467): 1-162. doi
- Tänzler R, Toussaint E, Suhardjono Y, Balke M, Riedel A (2014) Multiple transgressions of Wallace’s Line explain diversity of flightless Trigonopterus weevils on Bali. Proceedings of the Royal Society B: Biological Sciences 281: 20132528. doi: 10.1098/rspb.2013.2528