Trigonopterus toraja
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus toraja Riedel sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype, male (Fig. 98a). Length 2.55 mm. Color of antennae ferruginous, tarsi and tibiae dark ferruginous; remainder black. Body subovate; in profile dorsally convex. Rostrum in basal 1/2 dorsally with median and pair of submedian costae; intervening furrows with sparse rows of recumbent piliform scales; epistome indistinct; apical 1/3 subglabrous, sparsely setose. Pronotum with disk densely punctate with small punctures; interspaces between punctures subglabrous. Elytra irregularly punctate with small punctures, some striae marked by hardly visible hairlines; intervals flat; humerus with rows of coarser punctures. Meso- and metafemur with anteroventral ridge crenate, ending with blunt denticle in apical 1/3. Metafemur dorsally with recumbent, silvery scales; subapically with stridulatory patch. Metatibia ventrally with sparse row of thin setae. Abdominal ventrites 1–2 concave, subglabrous; in profile ventrite 2 subangularly projecting; ventrite 5 flat, punctate. Penis (Fig. 98b) with sides of body subparallel; apex subtruncate, with sparse setae; apodemes 2.0 × as long as body of penis; transfer apparatus spiniform, directed basad in repose, attached to anchor-shaped supporting sclerite; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 2.38–2.63 mm. Color of legs from dark ferruginous to almost black. Female rostrum slender, subglabrous, with two submedian rows of punctures, with pair of sublateral furrows.
Material examined
Holotype (MZB): ARC3054 (GenBank # MK260495), S-Sulawesi Prov., Tanah Toraja, Bittuang, Gn. Karoa, 02°55.270'S 119°40.179'E to 02°55.032'S 119°40.365'E, 1800–2000 m, beaten, 10-V-2013. Paratypes (MZB, SMNK, ZSM): S-Sulawesi Prov., Tanah Toraja, Bittuang: 27 exx, ARC3053 (EMBL # LN884954), ARC5995 (GenBank # MK260494), ARC5996 (EMBL # MK260501), ARC5997 (EMBL # MK260500), ARC5998 (EMBL # MK260498), same data as holotype; 1 ex Tanah Toraja, Bittuang, Gn. Karoa, 02°55.270'S 119°40.179'E, 1836 m, sifted, 10-V-2013; 71 exx, ARC3033 (GenBank # MK260496), ARC3034 (GenBank # MK260497), ARC3035 (GenBank # MK260499), Gn. Ponding, 02°56.446'S 119°38.075'E, 1625 m, beaten, 09-V-2013.
Distribution
S-Sulawesi Prov. (Tanah Toraja). Elevation 1625–1800 m.
Biology
On foliage in montane forests.
Etymology
The name “Toraja” resorts both to a people and the land inhabited by them. The epithet is a noun in apposition.
Notes
Trigonopterus toraja Riedel, sp. n. was coded as “Trigonopterus sp. 498”. It is closely related to Trigonopterus rantepao Riedel, sp. n. from which it can be distinguished by the structure of the penis.
Original Description
- Riedel, A; Narakusumo, R; 2019: One hundred and three new species of Trigonopterus weevils from Sulawesi ZooKeys, (828): 1-153. doi
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