Trigonopterus pararugosus 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 : 52

Taxon classification Animalia Coleoptera Curculionidae

55. Trigonopterus pararugosus Riedel sp. n.

Diagnostic description.

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.

Material examined.

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.

Distribution.

Bali (Mt. Batukaru, Mt. Mesehe, Tamblingan). Elevation: 825-1520 m.

Etymology.

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.

Notes.

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.