Trigonopterus yorkensis Riedel

Riedel, Alexander & Taenzler, Rene, 2016, Revision of the Australian species of the weevil genus Trigonopterus Fauvel, ZooKeys 556, pp. 97-162: 144-146

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scientific name

Trigonopterus yorkensis Riedel

sp. n.

Taxon classification Animalia Coleoptera Curculionidae

32. Trigonopterus yorkensis Riedel   sp. n.

Diagnostic description.

Holotype (Fig. 32a). Length 1.84 mm. Color black, antenna and tarsi ferruginous. Body subrhomboid, without constriction between pronotum and elytron; in profile evenly convex. Rostrum punctate-rugose, with sparse white scales, median ridge indistinct. Eyes large, in subdorsal position. Forehead punctate, with scattered brown scales. Pronotum coarsely punctate, interspaces between punctures polished; with sparse narrow brown scales inserting in punctures. Elytra subglabrous; striae marked by indistinct rows of minute punctures each containing minute narrow brown scale; at apical margin with few white almond-shaped scales. Legs. Femora dorsally clothed with white scales; anteroventral furrow with sparse row of white scales. Profemur with anteroventral ridge basally abruptly ending forming blunt angle; with somewhat indistinct subbasal callus. Tibial apex with uncus, without premucro. Abdominal ventrites 1-2 laterally swollen, medially concave; ventrite 5 coarsely punctate, at middle concave. Penis (Fig. 32b) with sides of body subparallel to subangulate apex; transfer apparatus simple, elongate, with pair of small basal sclerites; ductus ejaculatorius without bulbus. Intraspecific variation. Length 1.70-1.96 mm. Female rostrum with sparse small punctures, with sparse recumbent setae, only basally with few scales. Female abdominal ventrites 1-2 medially flat; ventrite 5 flat.

Material examined.

Male, holotype (QMBA): ARC3707 (EMBL # LN888189), Queensland, W Bloomfield, Mt. Misery, S15°52.706', E145°13.383',750-850 m, 30-IV-2014. Paratypes (QMBA, SMNK): Queensland: 5 exx, ARC3706 (EMBL # LN888188), ARC3708 (EMBL # LN888190), ARC3709 (EMBL # LN888191), same data as holotype; 1 ex, Mt. Misery, summit, 15°52', S 145°14', E, 850 m, 03-I-1991, Pyrethrum knockdown; 1 ex, Massey Ra., 6 km NW of Bellenden Kerr, 17°14', S 145°48', E, 1150 m, 11-X-1991.


Queensland: Mt. Misery, Massey Range.


Beaten from foliage in relatively dry forest.


This epithet is an adjective based on the Cape York Peninsula, where the type locality is located.


Trigonopterus yorkensis   Riedel, sp. n. was coded as " Trigonopterus   sp. 552".