Trigonopterus montanus
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus montanus Riedel sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype (Fig. 22a). Length 3.25 mm. Color ferruginous. Body elongate, with distinct constriction between pronotum and elytron; in profile convex. Rostrum with median ridge and pair of submedian ridges ending in apical third; intervening furrows with rows of coarse punctures each containing one mesad directed narrow scale; base dorsally protruding, gently projecting from profile; epistome posteriorly with 4 denticles. Forehead coarsely punctate-rugose. Pronotum with distinct subapical constriction; disk coarsely punctate-reticulate; with median costa; uneven, near middle with pair of weak swellings; punctures each containing one narrow scale of ochre or white color. Elytra with striae deeply incised, containing coarse punctures; intervals costate, punctate, in basal half partly transversely confluent; punctures containing small ochre scales or larger white scales; base markedly bisinuate. Legs. Femora densely punctate, with sparse scales. Profemur with subbasal callus anteriorly projecting. Tibiae subbasally denticulate; metatibia with suprauncal tooth. Abdominal ventrites 1-2 laterally swollen, medially forming common cavity, with coarse punctures; ventrite 5 in basal half concave, coarsely punctate. Penis (Fig. 22b) with sides of body subparallel, widened to subangulate apex; transfer apparatus compact, with pair of triangular sclerites; ductus ejaculatorius without bulbus. Intraspecific variation. Length 3.16–3.25 mm. Color ferruginous (ht, 1 pt), or black except tarsi and antenna ferruginous (1 pt). Female rostrum basally with median costa and pair of submedian costae; in apical half subglabrous, punctate; epistome simple. Female abdominal ventrites 1-2 medially flat; ventrite 5 flat.
Material examined
Holotype (ANIC): ARC4040 (PCR failed), Queensland, Bellenden Ker Range, Summit TV Stn., S17°16', E145°51', 1560 m, rainforest, litter, Q.M. Berlesate No. 565, 29-IV-02-V-1983. Paratypes (ANIC, SMNK): Queensland: 2 exx, same data as holotype.
Distribution
Queensland: Mt. Bellenden Ker.
Biology
Sifted from leaf litter in primary forest.
Etymology
This epithet is based on the adjective montanus (belonging to a mountain) and refers to the isolated occurrence of the species on the summit of Mt. Bellenden Ker.
Original Description
- Riedel, A; Tänzler, R; 2016: Revision of the Australian species of the weevil genus Trigonopterus Fauvel ZooKeys, (556): 97-162. doi
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