Trigonopterus rubidus
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus rubidus Narakusumo & Riedel, 2021 sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype.'Male' (Fig. 20a). Length 2.50 mm. Color of antennae and elytra ferruginous; remainder black. Body subovate; in dorsal aspect with distinct constriction between pronotum and elytron, in profile dorsally convex. Rostrum dorsally with median and pair of submedian costae; intervening furrows with rows of coarse punctures and small setae; epistome indistinct, subglabrous with suberect setae. Pronotum with disk densely punctate; interspaces between large punctures subglabrous, subequal or smaller than punctures´ diameter. Elytra with striae distinct, marked by rows of punctures; intervals subglabrous, with few scattered punctures; basal margin bordered by row of coarse, dense punctures. Meso- and metafemur with anteroventral ridge weakly crenate. Metafemur subapically with stridulatory patch. Meso- and metatibia subglabrous, with sparse erect setae. Abdominal ventrites 1–2 concave, subglabrous, with coarse punctures; ventrite 5 with shallow impression, densely punctate. Penis (Fig. 20b) with sides of body subparallel; apex broadly angulate, with sparse setae; apodemes 3.0× as long as body of penis; transfer apparatus flagelliform, curved, pointing basad, basally supported by pair of L-shaped sclerites; ductus ejaculatorius basally markedly sclerotized and somewhat swollen, curving around apodeme tips, then becoming thin and membranous. Intraspecific variation. Length 2.16–2.93 mm; elytral coloration orange to dark ferruginous. Female rostrum more slender, dorsally subglabrous, with rows of punctures. Female abdominal ventrites 1–2 weakly concave, punctate. Female abdominal ventrite 5 flat, densely punctate.
Material examined
Holotype (MZB, Cole.173.073): MZB0161 (GenBank OK481877), Indonesia, C-Sulawesi, Toli-Toli, Gn. Dako, 01°03.389'N, 120°55.524'E to 01°03.567'N, 120°56.032'E, 1900–2200 m, 10-VII-2018, beaten. Paratypes (MZB, SMNK): Indonesia, C-Sulawesi, Toli-Toli, Gn. Dako: 40 exx, MZB0216 (GenBank OK481837), same as holotype; 5 exx, MZB0066 (GenBank OK481951), 01°03.782'N, 120°53.934'E to 01°02.977'N, 120°55.001'E, 1250–1750 m, 11-VII-2018, beaten; 18 exx, 01°02.977'N, 120°55.967'E to 01°03.210'N, 120°55.297'E, 1700–1800 m, 08–10-VII-2018, beaten; 6 exx, MZB0067 (GenBank OK481950), MZB0068 (GenBank OK481949), 01°03.174'N, 120°55.272'E to 01°03.389'N, 120°55.524'E, 1800–1900 m, 10-VII-2018, beaten; 31 exx, MZB0069 (GenBank OK481948), 01°03.174'N, 120°55.272'E to 01°03.389'N, 120°55.524'E, 1800–1900 m, 10-VII-2018, beaten; 5 exx, 01°03.174'N, 120°55.272'E to 01°03.389'N, 120°55.524'E, 1800–1900 m, 08–10-VII-2018, beaten.
Distribution
C-Sulawesi Prov. (Mt Dako). Elevation 1700–1900 m.
Biology
On foliage in montane forest.
Etymology
This epithet is the Latin adjective rubidus, -a, -um (reddish) referring to the elytral color.
Notes
Trigonopterus rubidus sp. nov. was coded as “Trigonopterus sp. 1199”. This species belongs to the T. tatorensis-group. It is closely related to T. tatorensis Riedel, from which it differs by denser pronotal punctures, its reddish elytral color and 9.5–9.9% cox1 p-distance.
Original Description
- Narakusumo, R; Riedel, A; 2021: Twenty-eight new species of Trigonopterus Fauvel (Coleoptera, Curculionidae) from Central Sulawesi ZooKeys, 1065: 29-79. doi
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