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Holotype (Fig. 10a). Length 2.95 mm. Color black. Body subovate, almost without constriction between pronotum and elytron; in profile evenly convex. Rostrum with median costa and pair of submedian costae dorsally flattened; intervening furrows with rows of silvery scales; apical 1/3 rugose-punctate. Eyes with dorsal margin bordered by furrow. Forehead with sparse coarse punctures. Pronotum with disk punctate; sides with punctures slightly larger; interspaces not microreticulate; base slightly extended towards elytral suture. Elytra with striae marked by rows of minute punctures; along base and humeri with row of large punctures; apex with dense rows of small shallow punctures. Legs. Femora microreticulate, punctate. Metafemur dorsally with elongate patch of dense silvery scales; posterior surface with pair of longitudinal furrows containing rows of scales parallel to ventral and dorsal edge; dorsoposterior edge indistinct. Mesotibia apically with uncus and premucro largely fused, with shallow incision at apex. Metatibia apically with uncus and distinct premucro. Abdominal ventrite 2 swollen, with posterior edge projecting, medially forming common cavity with ventrite 1; ventrite 5 concave, dull, microreticulate, punctate. Penis (Fig. 9b) with sides of body subparallel, weakly converging; apex with median triangular extension confluent with outline of apex; transfer apparatus short, dentiform, apically bordered by pair of L-shaped sclerites; ductus ejaculatorius without bulbus.
Holotype (QMBA): ARC3698 (EMBL # LN888183), Queensland, Cooktown, Mt. Cook N.P., S15°28.648', E145°15.793', to S15°29.252', E145°15.992', 63-245 m, 23-IV-2014. Paratypes (ANIC, SMNK): Queensland: 1 ex, Cooktown, Mt. Cook N.P., S15°29', E145°16', 11-12-X-1980; 1 ex, Cooktown, Mt. Cook N.P., S15°28.648', E145°15.793', to S15°29.252', E145°15.992', 63-324 m, 24-IV-2014.
Queensland (Mt. Cook).
Beaten from foliage of Acacia-dominated forest.
This epithet is an adjective based on the name of the type locality, Cooktown.
- Riedel, A; Tänzler, R; 2016: Revision of the Australian species of the weevil genus Trigonopterus Fauvel ZooKeys, (556): 97-162. doi