Trigonopterus baliensis 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: 14-15

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Trigonopterus baliensis Riedel

sp. n.

Taxon classification Animalia Coleoptera Curculionidae

12. Trigonopterus baliensis Riedel  sp. n.

Diagnostic description.

Holotype, male (Fig. 12a). Length 1.79 mm. Color of head and legs ferruginous, elytra near sutural margin deep ferruginous, remainder black. Body in dorsal aspect with marked constriction between pronotum and elytron; with distinct constriction in profile. Rostrum with median ridge and pair of submedian ridges, intervening furrows with sparse rows of setae; epistome with transverse, subangulate ridge. Pronotum with indistinct subapical constriction; disk coarsely punctate-rugose, sparsely setose; in basal half with pair of sublateral, kidney-shaped impressions; with median ridge. Elytra with striae deeply impressed, each with row of slender, suberect scales; intervals costate, subglabrous; apical margin subangulate. Femora each with small to minute tooth. Metafemur subapically with indistinct stridulatory patch. Abdominal ventrite 5 with pair of submedian ridges, punctate, sparsely setose. Penis (Fig. 12b) with sides of body subparallel; in apical quarter markedly converging to rounded apex, with minute median brush of setae; transfer apparatus flagelliform, 2.6 × longer than body; apodemes 2.0 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 1.46-1.90 mm. Color of elytra ferruginous to black. Female rostrum dorsally in apical half subglabrous, with sparse minute punctures; epistome simple. Pronotum in females and in small males relatively narrow, in large males wider. Elytra in females narrower, humeri evenly rounded; large males with humeri more distinctly, subangularly projecting laterad, in small males similar to females; intervals weakly costate, in larger specimens markedly costate or carinate.

Material examined.

Holotype (MZB): ARC0580 (EMBL # LM655516), Bali, Bedugul, Tamblingan, above the village along water pipe, sample 4, S08°15.854', E115°05.312', 1310 m, 06-XI-2007. Paratypes (ARC, MZB, SMNK, ZSM): Bali: 7 exx, ARC166, Bedugul, mountain NW of botanical garden, 1400 m, 04-XII-2004 (ARC); 1 ex, ARC0575 (EMBL # LM655511), Bedugul, Mt. Pohen, S08°16.526', E115°08.634', 1580 m, 01-XI-2007; 10 exx, ARC0576 (EMBL # LM655512), ARC0577 (EMBL # LM655513), ARC0578 (EMBL # LM655514), ARC0579 (EMBL # LM655515), Bedugul, Mt. Pohen, S08°16.643', E115°08.875', 1405 m, 01-XI-2007; 6 exx, Bedugul, Mt. Pohen, sample 6, S08°16.607', E115°08.773', 1460 m, 01-XI-07; 15 exx, ARC0581 (EMBL # LM655517), ARC0582 (EMBL # LM655518), ARC0583 (EMBL # LM655519), same data as holotype; 43 exx, Tamblingan, sample 5, S08°15.108', E115°05.573', 1350 m, 03-IV-2011; 2 exx, Tamblingan, sample 1, S08°16.029', E115°05.854', 1210 m, 06-XI-2007; 2 exx, Tamblingan, sample 2, S08°15.015', E115°06.202', 1255 m, 06-XI-2007; 13 exx, Lake Tamblingan, 1250 m, 18-19-XII-2008; 1 ex, ARC0588 (EMBL # LM655524), Bedugul, Mt. Catur, S08°15.626', E115°11.354', 1690 m, 07-XI-2007; 26 exx, ARC2307 (EMBL # LM655760), ARC2308 (EMBL # LM655761), ARC2309 (EMBL # LM655762), Mt. Batukaru, Wangayagede, sample 3, S08°21.431', E115°05.699', 1170 m, 31-III-2011; 49 exx, Mt. Batukaru, Wangayagede, sample 4, S08°21.373', E115°05.564', 1310 m, 31-III-2011; 53 exx, Mt. Batukaru, Wangayagede, sample 5, S 08°21.130', E115°05.321', 1520 m, 31-III-2011; 8 exx, Angseri, Mt. Adeng, sample 1, S08°19.824', E115°08.604', 1190 m, 05-IV-2011; 8 exx, Angseri, Mt. Adeng, sample 2, S08°19.726', E115°08.583', 1280 m, 06-IV-2011; 39 exx, ARC2319 (EMBL # LM655772), ARC2320 (EMBL # LM655773), Angseri, Mt. Adeng, sample 3, S08°19.626', E115°08.554', 1385 m, 06-IV-2011; 1 ex, Angseri, Mt. Adeng, sample 4, S08°19.463', E115°08.537', 1535 m, 06-IV-2011; 4 exx, ARC0730 (EMBL # LM655547), ARC0731 (PCR failed), Pangkung village, trail to Mesehe-waterfall, S08°18.30', E114°41.68', 350-600 m, 14 &17-XII-2008; 3 exx, ARC2252 (EMBL # LM655707), ARC2253 (EMBL # LM655708), ARC2254 (PCR failed), Negara, Kampung Pasatan, Desa Pohsanten, Mt. Mesehe, sample 5, S08°16.589', E114°41.772', 745 m, 18-III-2011; 1 ex, Negara, Kampung Pasatan, Desa Pohsanten, Mt. Mesehe, sample 4, S08°17.466', E114°41.331', 490 m, 17-III-2011; 17 exx, Negara, Kampung Pasatan, Desa Pohsanten, Mt. Mesehe, sample 5, S08°16.589', E114°41.772', 745 m, 18-III-2011; 4 exx, Negara, Kampung Pasatan, Desa Pohsanten, Mt. Mesehe, sample 6, S08°16.234', E114°41.528', 935 m, 18-III-2011; 1 ex, Negara, Kampung Pasatan, Desa Pohsanten, Mt. Mesehe, sample 7, S08°16.314', E114°41.649', 890 m, 18-III-2011; 52 exx, ARC2959 (EMBL # LM656012), ARC2960 (EMBL # LM656013), ARC2961 (EMBL # LM656014), Negara, Kampung Pasatan, Desa Pohsanten, Mt. Mesehe, sample 8, S08°16.454', E114°41.725', 825 m, 18-III-2011.


Bali (Mt. Andeng, Mt. Batukaru, Bedugul, Mt. Mesehe). Elevation: 600-1690 m.


This epithet is based on the island of Bali.


Trigonopterus baliensis  Riedel, sp. n. was coded as " Trigonopterus  sp. 328" by Tänzler et al. (2014).