Trigonopterus ewok
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus ewok Narakusumo & Riedel, 2021 sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype. Male (Fig. 7a). Length 2.23 mm. Color ferruginous; thorax black. Body subovate; in dorsal aspect with moderate constriction between pronotum and elytron; in profile dorsally convex. Rostrum dorsally with median and pair of submedian ridges, separated by rows of coarse punctures containing subrecumbent yellow scales; epistome subglabrous, with sparse setae and minute punctures, posteriorly with transverse ridge. Pronotum with indistinct lateral edges subparallel to weak subapical constriction; disk with dense, partly confluent coarse punctures, with recumbent yellow scales; with subglabrous midline. Elytra with striae deeply impressed, containing rows of yellow or white scales; intervals costate, with rows of punctures and yellowish recumbent scales. Femora dentate, with acute tooth; anteroventral ridge weakly crenulate; dorsal and anterior surface with sparse white scales. Metafemur with dorsoposterior edge indistinct, weakly denticulate; subapically with extended stridulatory patch; dorsally with subrecumbent silvery scales. Dorsoposterior edge of tibiae subbasally angulate, denticulate. Abdominal ventrites 1–2 weakly concave, with dense coarse punctures, with sparse piliform scales; ventrite 5 with weak impression, densely punctate, with sparse suberect setae. Penis (Fig. 7b) with sides of body subparallel, apex subtruncate, with dense setae; apodemes 3.3× as long as body of penis; transfer apparatus flagelliform; ductus ejaculatorius basally sclerotized, with indistinct bulbus. Intraspecific variation. Length 1.93–2.23 mm. Epistome of female rostrum posteriorly without transverse ridge. Female pronotum with yellow scales concentrated in sublateral bands. Elytra with scaling more or less extensive. Female abdominal ventrites 1–2 flat.
Material examined
Holotype (MZB, Cole.173.060): MZB0129 (GenBank OK481905), Indonesia, C-Sulawesi, Tojo Una-Una, Matako, Gn. Pompangeo, 01°35.215'S, 120°55.560'E to 01°35.079'S, 120°55.49'E, 1900 m, 28-II-2020, sifted. Paratypes (MZB, SMNK): Indonesia, C-Sulawesi, Tojo Una-Una, Matako, Gn. Pompangeo: 1 ex, MZB0128 (GenBank OK481906), 01°35.235'S, 120°55.679'E to 01°35.258'S, 120°55.588'E, 1900 m, 27-II-2020, sifted; 2 exx, MZB0130 (GenBank OK481904), 01°35.197'S, 120°55.658'E to 01°35.127'S, 120°55.622'E, 2000 m, 01-III-2020, sifted.
Distribution
C-Sulawesi Prov. (Mt Pompangeo). Elevation ca. 1900–2000 m.
Biology
In leaf litter of montane forest.
Etymology
This epithet is a noun in apposition based on the fictional character of small bear-like creatures from Star Wars VI movie.
Notes
Trigonopterus ewok sp. nov. was coded as “Trigonopterus sp. 1188” (Narakusumo et al. 2020[1]). This species belongs to the T. impressicollis-group. It is closely related to T. impressicollis Riedel, which differs by the absence of longitudinal impressions on the pronotum, shorter setae on the apex of penis and 17.5–17.7% 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
Images
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Other References
- ↑ Narakusumo R, Riedel A, Pons J (2020) Mitochondrial genomes of twelve species of hyperdiverse Trigonopterus weevils. PeerJ 8: e10017. https://doi.org/10.7717/peerj.10017
