Trigonopterus monteithi Riedel

Riedel, Alexander & Taenzler, Rene, 2016, Revision of the Australian species of the weevil genus Trigonopterus Fauvel, ZooKeys 556, pp. 97-162 : 131-134

Taxon classification Animalia Coleoptera Curculionidae

23. Trigonopterus monteithi Riedel sp. n.

Diagnostic description.

Holotype (Fig. 23a). Length 3.22 mm. Color black; antenna and tarsi ferruginous. Body subrhomboid, with marked constriction between pronotum and elytron; in profile convex. Rostrum with median ridge and pair of submedian ridges; intervening furrows with rows of coarse punctures each containing one mesad directed seta; base dorsally protruding, markedly projecting from profile subangularly; epistome posteriorly with transverse ridge. Forehead coarsely punctate-rugose. Pronotum with sides converging to apex, almost without subapical constriction; foveate-reticulate; each fovea containing one inconspicuous seta; interspaces subglabrous, weakly microreticulate. Elytra cuneiform, from broad rounded humeri markedly converging to narrow apex; base bisinuate; surface microreticulate; striae deeply incised, narrow; intervals flat to weakly costate, with 1-2 rows of small punctures; sutural interval subglabrous except few punctures near base; intervals 2-5 behind middle with inconspicuous transverse patches of narrow recumbent scales. Legs. Femora densely punctate. Profemur with subbasal callus anteriorly projecting. Tibiae subbasally with dorsal angulation; pro- and metatibia subapically with suprauncal denticle. Abdominal ventrites 1-2 laterally swollen, medially forming common cavity; ventrite 5 coarsely punctate, weakly concave. Penis (Fig. 23b) with sides of body subparallel; apex subtruncate; endophallus with pair of subtriangular sclerites; transfer apparatus long spiniform; ductus ejaculatorius with distinct bulbus. Intraspecific variation. Length 2.04-3.53 mm. Female rostrum dorsally somewhat flattened; median ridge and pair of submedian costae subglabrous; epistome simple. Female abdominal ventrite 5 flat.

Material examined.

Holotype (QMBA): ARC3717 (EMBL # LN888199), Queensland, Kuranda, Saddle Mountain Road, S16°48.836', E145°39.580', sample 3, 586 m, 31-III-2014. Paratypes (QMBA, SMNK): Queensland: 1 ex, ARC3716 (EMBL # LN888198), same data as holotype; 2 exx, ARC3714 (EMBL # LN888196), ARC3715 (EMBL # LN888197), Kuranda, Saddle Mountain Road, S16°49.094', E145°39.712', sample 2, 637 m, 31-III-2014; 1 ex, 30 km N Kuranda, Black Mt. Rd., rainforest, leafmold, ANIC Berlesate 165, 04-XI-1969; 1 ex, Kuranda, Black Mt. Rd., S16°44', E145°34', 350 m, rainforest, ANIC Berlesate 339, 27-VI-1971; 1 ex, Davies Ck road, 20 km ESE Mareeba, 04-13-XII-88, 750 m, flight intercept trap; 1 ex, 9.6 km S Redlynch, Crystal Cascades, leaf litter, ANIC Berlesate 277, 30-IV-1970; 1 ex, Mt. Formartine South, 24-XI-1990, Berlesate 848, E145°37', S16°43', rainforest, 700 m, sieved litter; 2 exx, ARC3750 (EMBL # LN888230), ARC3751 (EMBL # LN888231), Daintree N.P., NW Mossman, Manjal Jimalji (Devils Thumb) trail, S16°23.571', E145°19.058', sample 2, 377 m, 20-IV-2014; 2 exx, ARC3746 (EMBL # LN888228), Cape Tribulation, Mt. Sorrow track, S16°04.789', E145°27.948', sample 1, 150 m, 09-IV-2014; 2 exx, ARC3745 (EMBL # LN888227), Cape Tribulation, Mt. Sorrow track, S16°04.579', E145°27.081', sample 6, 283 m, 10-IV-2014; 2 exx, ARC3747 (EMBL # LN888229), Cape Tribulation, Mt. Sorrow track, S16°04.695', E145°27.690', sample 7, 234 m, 10-IV-2014; 1 ex, 1,5 km NW of Cape Tribulation, site 1, S16°05', E145°28', Berlesate 480, 0 m, rainforest, sieved litter, 02-X-1982; 1 ex, 1,5 km NW of Cape Tribulation, site 1, Berlesate 445, S16°05', E145°28', 0 m, rainforest, sieved litter, 03-X-1982; 3 exx, 2.0 km W of Cape Tribulation, site 4, S16°05', E145°28', 200 m, Berlesate 429, sieved litter, rainforest, 25-IX-1982; 1 ex, 3.0 km W of Cape Tribulation, site 6, S16°05', E145°27', 500 m, Berlesate 422, rainforest, sieved litter, 19-IX-1982; 1 ex, 1.5 km W of Cape Tribulation, site 3, 150 m, baited flight trap, RF, 19-IX-1982; 2 exx, 2.5 km W of Cape Tribulation, site 5, S16°05', E145°27', 180 m, Berlesate 533, rainforest, sieved litter, 21-IV-1983; 1 ex, 2.5 km W of Cape Tribulation, site 5, S16°05', E145°27', 180 m, Berlesate 502, rainforest, sieved litter, 02-I-1983; 4 exx, Cape Tribulation, 49 km N of Daintree, 10 m, rainforest leaf and log litter, SBP 75, 12-VII-1982; 1 ex, Cape Tribulation, 49 km N of Daintree, 200 m, rainforest leaf litter, SBP 77, 14-VII-1982; 2 exx, Cape Tribulation, 10 m, rainforest streamside flood litter, SBP 79, 14-VII-1982; 1 ex, Table Mtn 10 km S of Cape Tribulation, S16°09', E145°26', 320 m, rainforest, sieved litter, 24-IV-1983; 1 ex, 2.0 km W of Cape Tribulation, site 4, S16°05', E145°28', 200 m, rainforest, sieved litter, 25-IX-1982; 1 ex, Cape Tribulation Area, S16°03', to S16°05', E145°28', 200 m, Winkler ANIC 1234 leaf and log litter, 01-11-V-1992; 3 exx, Thornton Range, S16°15', E145°26', 150 m, Berlesate ANIC 327, rainforest, 23-VI-1971; 2 exx, Thornton Range, S16°14', E145°26', 100 m, Berlesate ANIC 325, rainforest, 23-VI-1971; 1 ex, Thornton Range, S16°14', E145°26', 100 m, Berlesate ANIC 333, rainforest, 24-VI-1971; 4 exx, Thorn Rd., 11-XII-1969; 2 exx, Cooper Ck. near Daintree, S16°11', E145°26', 50 m, ANIC Berlesate 334, 22-VI-1971; 1 ex, Mt. Finnigan, 400 m, rainforest, litter and fungi, SPB56, 01-VII-1982; 1 ex, Mt. Finnigan, 400 m, rainforest, moist litter pockets, SPB61, 03-VII-1982; 1 ex, Moses Ck., 4 km NbyE of Mt. Finnigan, S15°47', E145°17', sieved rainforest litter, Berlesate ANIC 696, 14-16-X-1980; 3 exx, Julatten, edge of rainforest along creek, ex intercept trap, 21-30-XI-1987; 1 ex, Buchanan Ck., S 16°15', E145°26', 140 m, FIT B06F, 11-II-12-III-1998; 3 exx, Buchanan Ck., S 16°15', E145°26', 140 m, FIT B06F, 12-III-08-V-1998; 2 exx, Noah Beach, S 16°09', E145°26', 10 m, FIT N08F, 15-III-07-V-1998; 2 exx, Noah Beach, S 16°09', E145°26', 10 m, FIT N08F, 09-II-15-III-1998; 1 ex, Noah Beach, S 16°09', E145°26', 10 m, FIT N09F, 09-II-15-III-1998; 2 exx, Noah Beach, S 16°09', E145°26', 10 m, FIT N09F, 15-III-07-V-1998; 1 ex, Daintree, Buchanan Creek, S 16°14.39', E145°25.54', 140 m, FIT#6, 15-I-11-II-1998; 2 exx, Daintree, Cooper Creek, S 16°09.10', E145°24.19', 140 m, FIT#9, 11-I-10-II-1998; 2 exx, Daintree, Cooper Creek, S 16°09', E145°24', 140 m, FIT C05F, 16-III-07-V-1998; 2 exx, Daintree, Thompson Creek, S 16°07', E145°25', 80 m, FIT T08F, 10-I-12-II-1998; 1 ex, Daintree, Thompson Creek, S 16°07', E145°25', 80 m, FIT T09F, 12-II-15-III-1998; 2 exx, Daintree, Thompson Creek, S 16°07', E145°25', 80 m, FIT T09F, 15-III-07-V-1998; 1 ex, Daintree, Thompson Creek, S 16°07', E145°25', 80 m, FIT T09F, 10-I-12-II-1998; 10 exx, Daintree, Pimm´s Block, S 16°11', E145°24', 100 m, FIT T07F, 13-III-08-V-1998; 1 ex, Daintree, Pimm´s Block, S 16°11.33', E145°24.30', 100 m, FIT =6, 08-I-09-II-1998; 1 ex, Hutchinson Ck., S 16°13', E145°24', 30 m, FIT H09F, 11-II-14-III-1998; 4 exx, Hutchinson Ck., S 16°13', E145°24', 30 m, FIT H09F, 14-III-08-V-1998; 2 exx, Donovan Ck., S 16°01', E145°27', 20 m, FIT D09F, 10-II-14-III-1998; 3 exx, Donovan Ck., S 16°01', E145°27', 20 m, FIT D07F, 14-III-06-V-1998; 1 ex, Fairy Ck., S 16°14', E145°25', 80 m, FIT F07F, 11-II-13-III-1998; 1 ex, Fairy Ck., S 16°14', E145°25', 80 m, FIT F07F, 12-I-11-II-1998; 1 ex, Fairy Ck., S 16°14', E145°25', 80 m, FIT F01F, 13-III-08-V-1998; 4 exx, ARC3759 (EMBL # LN888236), ARC3760 (EMBL # LN888237), ARC3761 (EMBL # LN888238), Cedar Bay N.P., road between Rossville and Bloomfield, S15°47.510', E145°18.141', sample 2, 322 m, 29-IV-2014; 4 exx, Cedar Bay N.P., road between Rossville and Bloomfield, S15°47.510', E145°18.141', sample 2-B, 322 m, 01-V-2014; 3 exx, Cedar Bay N.P., road between Rossville and Bloomfield, S15°48.274', E145°18.901', sample 4, 214 m, 29-IV-2014; 1 ex, 3 km NE Mt. Webb, S15°03', E145°09', 01-30-X-1980.

Distribution.

Queensland: Cairns, Kuranda, Lamb Range, Mt. Formartine South, Cape Tribulation, Daintree N.P., Cedar Bay N.P., Mt. Webb.

Biology.

Sifted from leaf litter in primary forest.

Etymology.

This species is named in honor of Geoff Monteith (Brisbane), who collected the majority of the new Australian Trigonopterus species for the first time and whose help was essential for the success of this study.

Notes.

Trigonopterus monteithi Riedel, sp. n. was coded as " Trigonopterus sp. 553".