Trigonopterus garradungensis Riedel

Riedel, Alexander & Taenzler, Rene, 2016, Revision of the Australian species of the weevil genus Trigonopterus Fauvel, ZooKeys 556, pp. 97-162: 121-123

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scientific name

Trigonopterus garradungensis Riedel

sp. n.

Taxon classification Animalia Coleoptera Curculionidae

16. Trigonopterus garradungensis Riedel   sp. n.

Diagnostic description.

Holotype (Fig. 16a). Length 3.28 mm. Color black; antenna and legs ferruginous. Body subovate, with marked 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 seta; base dorsally protruding, markedly projecting from profile subangularly; epistome posteriorly with angulate ridge bearing 4 denticles. Forehead coarsely punctate-rugose. Pronotum with subapical constriction; disk coarsely punctate-reticulate; with median costa; near middle with pair of weak swellings, further laterad with clusters of sparse yellow recumbent scales. Elytra with striae deeply incised; intervals costate, punctate, with few scattered recumbent scales; sutural interval narrow, below level of interval 2; base markedly bisinuate. Legs. Femora densely punctate. Profemur with subbasal callus anteriorly projecting. Tibiae subbasally with dorsal angulation; metatibia in apical third with blunt suprauncal projection. Abdominal ventrites 1-2 laterally swollen, medially forming common cavity; ventrite 5 punctate, weakly concave. Penis (Fig. 16b) with sides of body weakly converging, in apical third with constriction, apex rounded; transfer apparatus flagelliform, ca. 1.2 × longer than body of penis; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.97-3.28 mm. Female rostrum dorsally somewhat flattened; median costa and pair of submedian costae subglabrous; epistome simple. Female abdominal ventrites 1-2 medially flat; ventrite 5 coarsely punctate, basally swollen, apically flat.

Material examined.

Holotype (QMBA): ARC3732 (EMBL # LN888214), Queensland, Garradunga, Polly Ck., N Innisfail, Hasenpusch property, S17°27.458', E146°01.227', sample 4, 82 m, 16-IV-2014. Paratypes (QMBA, SMNK): Queensland: 3 exx, ARC3733 (EMBL # LN888215), ARC3734 (EMBL # LN888216), ARC3735 (EMBL # LN888217), same data as holotype; 2 exx, Garradunga, Polly Ck., N Innisfail, Hasenpusch property, S17°27.388', E146°01.200', sample 1, 70 m, 16-IV-2014; 3 exx, Garradunga, Polly Ck., N Innisfail, Hasenpusch property, S17°27.306', E146°01.214', sample 2, 103 m, 16-IV-2014; 1 ex, Garradunga, Polly Ck., N Innisfail, Hasenpusch property, S17°27.458', E146°01.227', sample 4, 82 m, 16-IV-2014.


Queensland: Garradunga.


Sifted from leaf litter in primary forest.


This epithet is an adjective based on the name of the type locality, Garradunga.


Trigonopterus garradungensis   Riedel, sp. n. was coded as " Trigonopterus   sp. 559".