Trigonopterus tanimbarensis
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus tanimbarensis Narakusumo & Riedel sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype. Male (Fig. 6a). Length 3.06 mm. Color of antennae and tarsi ferruginous, remainder black. Body slender subovate; profile dorsally convex; in dorsal aspect and in profile with weak constriction between pronotum and elytron. Rostrum dorsally with median ridge somewhat flattened at level of antennal insertion; with fine submedian ridges; in basal 1/2 with dense silvery scales, in apical 1/2 with suberect setae. Pronotum densely punctate; punctures becoming larger anterolaterad; each puncture containing short seta; with subglabrous midline. Elytra with striae marked by rows of small punctures and fine hairlines; basal margin bordered by transverse row of deeper punctures; intervals subglabrous, with interspersed minute punctures. Femora with anteroventral ridge weakly crenate, ending in apical half with small tooth. Metafemur dorsally with recumbent silvery scales; dorsoposterior edge indistinct, weakly denticulate-crenate, subapically with stridulatory patch. Abdominal ventrites 1–2 concave, coarsely punctate, at middle subglabrous; ventrite 5 with shallow impression, densely punctate, sparsely setose, laterally with sparse scale. Penis (Fig. 6b) with sides subparallel, apex subangulate, setose; transfer apparatus complex; sclerites of endophallus and orifice asymmetrical; apodemes 2.1× as long as body of penis; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 2.75–3.25 mm. Female rostrum slender, dorsally with subglabrous median costa, with sublateral rows of punctures, in basal 1/3 with sparse suberect scales. Female abdominal ventrites 1–2 flat. Female abdominal ventrite 5, punctate.
Material examined
Holotype (MZB): MZB0010 (GenBank # MN322598), Indonesia, Maluku, Tanimbar, Yamdena Is, Lorulun, 07°48.788'S, 131°22.443'E to 07°48.137'S, 131°21.873'E, 140 m, beaten, 02-V-2017. Paratypes (MZB, SMNK): Indonesia, Maluku, Tanimbar: 7 exx, MZB0008 (GenBank # MN322600), MZB0009 (GenBank # MN322599), MZB0011 (GenBank # MN322593), same data as holotype; 4 exx. MZB0035 (GenBank # MN322596), Yamdena Is, Lorulun, Jungle Camp, 07°46.46'S, 131°20.482'E, 110 m, beaten, 19-IV-2018; 53 exx. MZB0028 (GenBank # MN322597) MZB0037 (GenBank # MN322594), Yamdena Is, Lorulun, Jungle Camp, 07°46.46'S, 131°20.482'E, 110 m, beaten, 24-IV-2018; 1 ex., MZB0036 (GenBank # MN322595), Yamdena Is, Lorulun, Jungle Track, 07°47.396'S, 131°20.849'E, 120 m, beaten, 19–20-IV-2018.
Distribution
Maluku Prov., Tanimbar (Yamdena Is). Elevation 110–140 m.
Biology
On foliage in lowland forest.
Etymology
This epithet is an adjective derived from the Tanimbar Archipelago.
Notes
This species appears related to a species from New Guinea (species 959) from which it is differs by 19.9% p-distance of its cox1 sequence and many morphological characters.
Original Description
- Narakusumo, R; Balke, M; Riedel, A; 2019: Seven new species of Trigonopterus Fauvel (Coleoptera, Curculionidae) from the Tanimbar Archipelago ZooKeys, 888: 75-93. doi
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