Trigonopterus tolitoliensis
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus tolitoliensis Narakusumo & Riedel, 2021 sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype. Male (Fig. 26a). Length 3.00 mm. Color of antennae ferruginous; legs dark ferruginous; remainder black. Body subovate; in dorsal aspect with weak constriction between pronotum and elytron; in profile dorsally convex. Rostrum dorsally with median and pair of submedian costae separated by row of coarse punctures; epistome with surface subglabrous and suberect setae, posteriorly with three denticles. Pronotum with weak subapical constriction; disk densely punctate; median line impunctate; interspaces between punctures subglabrous, subequal to punctures’ diameter. Elytra subglabrous, with striae marked by rows of small punctures and fine hairlines; along basal margin with transverse row of denser punctures; stria 8 along humerus with six coarse punctures; intervals subglabrous. Femora edentate, with distinct anteroventral ridge. Metafemur with dorsoposterior edge crenate; subapically with stridulatory patch. Posterior surface of metatibia with rows of long suberect spatulate scales. Abdominal ventrites 1–2 concave, dull-shagreened, with sparse punctures; behind metacoxa with angular knob; ventrite 5 concave, subglabrous, sublaterally with sparse erect scales. Penis (Fig. 26b) with sides of body subparallel; apex symmetrical, with median subangular extension and sparse setae; dorsally body in front of middle with pair of brushes of long setae; apodemes 1.9× as long as body of penis; transfer apparatus Y-shaped; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.08–3.16 mm. Female rostrum in apical half slender, dorsally subglabrous, with submedian rows of punctures and sublateral furrows; female epistome indistinct. Female abdominal ventrites 1–2 weakly concave, with sparse minute punctures; female ventrite 5 weakly concave, with scattered punctures and setae.
Material examined
Holotype (MZB, Cole.173.078): MZB0050 (GenBank OK481965), Indonesia, C-Sulawesi Prov., Toli-Toli, Gn. Dako, Base camp 1, 01°03.782'N, 120°53.934'E to 01°03.574'N, 120°54.032'E, 970–1100 m, 05–06-VII-2018, beaten. Paratypes (MZB, SMNK): Indonesia, C-Sulawesi Prov., Toli-Toli, Gn. Dako: 52 exx, same as holotype; 1 ex, 01°04.181'N, 120°53.565'E to 01°03.967'N, 120°53.692'E, 720–830 m, 01-VII-2018, beaten; 1 ex, 01°03.967'N, 120°53.692'E to 01°03.782'N, 120°53.934'E, 830–970 m, 01-VII-2018, beaten; 1 ex, 01°03.967'N, 120°53.692'E to 01°03.782'N, 120°53.934'E, 830–970 m, 05-VII-2018, beaten; 3 exx, 01°03.967'N, 120°53.692'E to 01°03.782'N, 120°53.934'E, 830–970 m, 03-VII-2018, beaten; 1 ex, MZB0271 (GenBank OK481785), 01°03.782'N, 120°53.934'E, 970 m, 04-VII-2018, beaten; 23 exx, MZB0095 (GenBank OK481922), MZB0098 (GenBank OK481919), MZB0096 (GenBank OK481921), MZB0273 (GenBank OK481783), MZB0274 (GenBank OK481782), MZB0275 (GenBank OK481781), 01°03.697'N, 120°53.991'E, 970 m, 07-VII-2018, beaten; 12 exx, MZB0086 (GenBank OK481931) 01°03.574'N, 120°54.032'E to 01°03.782'N, 120°53.934'E, 830–1000 m, 05-VII-2018, beaten; 7 exx, 01°03.782'N, 120°53.934'E to 01°03.967N, 120°53.692'E, 970–1000 m, 05-VII-2018, beaten; 66 exx, MZB0087 (GenBank OK481930), MZB0088 (GenBank OK481929), MZB0089 (GenBank OK481928), same data as holotype; 6 exx, 01°03.782N, 120°53.934'E to 01°03.574N, 120°54.032'E, 970–1140 m, 06-VII-2018, beaten; 14 exx, 01°03.574'N, 120°54.032'E to 01°03.157'N, 120°54.195'E, 1100–1120 m, 06-VII-2018, beaten; 7 exx, 01°03.574'N, 120°54.032'E to 01°03.512'N, 120°54.054'E, 1100–1120 m, 06-VII-2018, beaten; 1 ex, MZB0059 (GenBank OK481956), 01°03.512'N, 120°54.054'E, 1100–1200 m, 13-VII-2018, sifted; 7 exx, 01°03.512'N, 120°54.054'E, 1100–1200 m, 06-VII-2018, beaten; 50 exx, MZB0051 (GenBank OK481964), 01°03.574'N, 120°54.032'E to 01°03.181'N, 120°54.607'E, 1100–1400 m, 07-VII-2018, beaten; 15 exx, 01°03.697'N, 120°53.991'E, 1030 m, 06-VII-2018, sifted; 3 exx, MZB0276 (GenBank OK481780), 01°03.412'N, 120°54.126'E to 01°03.241'N, 120°54.328'E, 1200–1300 m, 07-VII-2018, beaten; 3 exx, MZB0049 (GenBank OK481966), MZB0269 (GenBank OK481787), MZB0270 (GenBank OK481786), 01°03.782'N, 120°53.934'E to 01°02.977'N, 120°55.001'E, 1250–1750 m, 11-VII-2018, beaten.
Distribution
C-Sulawesi Prov. (Mt Dako). Elevation 830–1250 m.
Biology
On foliage in montane forests.
Etymology
This epithet is a Latinized adjective based on Toli-Toli regency.
Notes
Trigonopterus tolitoliensis sp. nov. was coded as “Trigonopterus sp. 1186”. The species belongs to the T. palopensis-group. It is closely related to T. puspoi sp. nov. from which it differs by the setose brushes on the dorsal surface of the penis, the scaling of the metatibia, and a 16.4–18.1% p-distance of its cox1 sequence.
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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