Trigonopterus bisinuatus Riedel

Riedel, Alexander & Taenzler, Rene, 2016, Revision of the Australian species of the weevil genus Trigonopterus Fauvel, ZooKeys 556, pp. 97-162: 110-112

publication ID

http://dx.doi.org/10.3897/zookeys.556.6126

publication LSID

lsid:zoobank.org:pub:FFA73BF5-1AA3-4BF0-85B8-1C44F838B040

persistent identifier

http://treatment.plazi.org/id/CBB64820-13B8-41E4-A1D8-0541C087704C

taxon LSID

lsid:zoobank.org:act:CBB64820-13B8-41E4-A1D8-0541C087704C

treatment provided by

ZooKeys by Pensoft

scientific name

Trigonopterus bisinuatus Riedel
status

sp. n.

Taxon classification Animalia Coleoptera Curculionidae

8. Trigonopterus bisinuatus Riedel   sp. n.

Diagnostic description.

Holotype (Fig. 8a). Length 2.88 mm. Color black; antenna and legs ferruginous. Body subovate, with shallow 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, projecting from profile subangularly; epistome posteriorly with 4 low denticles. Forehead coarsely punctate-rugose. Pronotum with subapical constriction; disk coarsely punctate-rugose; with median costa; submedially punctures confluent forming irregular longitudinal furrows and wrinkles, near middle sparing pair of weak swellings of irregular outline. Elytra with striae deeply incised; intervals costate, sparsely punctate, with few scattered recumbent white scales; base markedly bisinuate. Legs. Femora densely punctate. Profemur with subbasal callus anteriorly projecting. Tibiae subbasally with dorsal angulation; metatibia subapically with suprauncal denticle. Abdominal ventrites 1-2 laterally swollen, medially forming common cavity; ventrite 5 punctate, weakly concave. Penis (Fig. 8b) with sides of body subparallel, apex rounded; behind ostium with pair of sclerites; endophallus with pair of elongate sclerites; transfer apparatus flagelliform, ca. 1.6 × longer than body of penis; ductus ejaculatorius near insertion to transfer apparatus sclerotized, this portion longer and thicker than flagellum; without bulbus. Intraspecific variation. Length 2.60-2.90 mm. Female body more slender. 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): ARC3736 (EMBL # LN888218), Queensland, Garradunga, Polly Ck., N Innisfail, Hasenpusch property, S17°27.458', E146°01.227', sample 4, 82 m, 16-IV-2014. Paratypes ( ANIC, QMBA, SMNK): Queensland: 3 exx, ARC3737 (EMBL # LN888219), ARC3738 (EMBL # LN888220), ARC3739 (EMBL # LN888221), same data as holotype; 7 exx, Garradunga, Polly Ck., N Innisfail, Hasenpusch property, S17°27.388', E146°01.200', sample 1, 70 m, 16-IV-2014; 7 exx, Garradunga, Polly Ck., N Innisfail, Hasenpusch property, S17°27.306', E146°01.214', sample 2, 103 m, 16-IV-2014; 3 exx, Garradunga, Polly Ck., N Innisfail, Hasenpusch property, S17°27.252', E146°01.222', sample 3, 105 m, 16-IV-2014; 22 exx, Garradunga, Polly Ck., N Innisfail, Hasenpusch property, S17°27.458', E146°01.227', sample 4, 82 m, 16-IV-2014; 1 ex Stone Ck (Hasenpusch), 01-XI-1995, 06-II-1996, 100 m, pitfall traps; 4 exx, ARC3719 (EMBL # LN888201), ARC3720 (EMBL # LN888202), ARC3721 (EMBL # LN888203), ARC3722 (EMBL # LN888204), Wooroonooran N.P., Palmerston Highway, K-tree-road, sample 3, 428 m, S17°36.510', E145°46.074', 04-IV-2014; 1 ex, ARC3718 (EMBL # LN888200), Danbulla N.P., Robson´s Creek, S17°07.14', E145°37.92', 700 m, 09-12-IV-2014, ex dung pitfall trap; 3 exx, Graham Range, 550 m, S17°17', E145°58', 01-XI-8-XII-1995, pitfall traps; 3 exx, Graham Range, 01-XI-1995, Berlesate 895, S17°17', E145°58', rainforest, 550 m; 1 ex, Graham Range, 08-XII-1995, Berlesate 901, S17°17', E145°58', rainforest, 550 m; 3 exx, North Bell Peak, 22-XI- 1990, Berlesate 845, S17°06', E145°52', rainforest, 600 m; 1 ex, Kauri Creek, 2 km E, S17°08', E145°37', 10-11-II-1999, 680 m, rainforest, dung pitfall, 2191; 1 ex, Mt. Murray Prior, 30-X-1995, Berlesate 894, S16°56', E145°51', rainforest, 770 m, sieved litter; 1 ex ARC4049 (PCR failed), 4 km E Lake Barrine, S17°16', E145°41', ANIC Berlesate 352, rainforest, 01-VII-1971; 1 ex, Eacham N.P., S17°18', E145°37', ANIC Berlesate 435, rainforest, 20-II-1973; 1 ex, Eacham N.P., S17°18', E145°37', 760 m, ANIC Berlesate 437, rainforest, 19-II-1973; 1 ex, Eacham N.P., S17°18', E145°37', 760 m, ANIC Berlesate 484, rainforest, 23-III-1973; 2 exx, 3.2 km SW Little Mulgrave, ANIC Berlesate 263, rainforest, 25-II-1970; 1 ex, Barrine N.P., S17°16', E145°38', ANIC Berlesate 486, 21-III-1975.

Distribution.

Queensland: Atherton Tablelands, Danbulla N.P., Garradunga, Graham Range, Kauri Creek, Mt. Murray Prior, North Bell Peak, Wooroonooran N.P.

Biology.

Sifted from leaf litter in primary forest; occasionally found in pitfall traps.

Etymology.

This epithet is a combination of the Latin prefix bi- (two) and the participle sinuatus (curved) and refers to the outline of the elytral base.

Notes.

Trigonopterus bisinuatus   Riedel, sp. n. was coded as " Trigonopterus   sp. 561".