Trigonopterus squamirostris Riedel

Riedel, Alexander, Sagata, Katayo, Surbakti, Suriani, Rene Taenzler, & Michael Balke,, 2013, One hundred and one new species of Trigonopterus weevils from New Guinea, ZooKeys 280, pp. 1-150 : 72-73

81. Trigonopterus squamirostris Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 81a). Length 1.70 mm. Color black; tarsi and elytra dark ferruginous, antenna light ferruginous. Body subovate; in dorsal aspect and in profile with distinct constriction between pronotum and elytron. Eyes large. Rostrum punctate, surface microreticulate, densely squamose with cream-colored almond-shaped scales, without distinct furrows or ridges. Pronotum densely punctate; anterolaterally with scattered cream-colored scales. Elytra with striae distinct; intervals flat, subglabrous; stria 3 near base and apex with few scales. Femora edentate, dorsally with few scattered scales. Metafemur subapically with stridulatory patch. Metatibia simple; uncus hook-like extended, curved ventroposteriad. Aedeagus (Fig. 81b) with apodemes 2.0 X as long as body; sides of body weakly bisinuate; apex extended, pointed, markedly curved ventrad; transfer apparatus small, symmetrical; ductus ejaculatorius basally swollen, without bulbus. Intraspecific variation. Length 1.38-1.88 mm. Color of elytra ferruginous or black. Female rostrum dorsally subglabrous, submedially with row of punctures, sublateral furrow containing sparse row of setae. Female metatibia with uncus simple, not hook-like.

Material examined.

Holotype (SMNK): ARC1119 (EMBL # HE615748), PAPUA NEW GUINEA, Simbu Prov., Karimui Dist., Haia, Supa, S06°40.078', E145°03.207' to S06°39.609', E145°03.012', 1220-1450 m, 02-X-2009. Paratypes (NAIC, SMNK, ZSM): Simbu Prov., Karimui Dist., Haia: 1 ex, ARC1104 (EMBL # HE615733), S06°41.018', E145°00.995',1090 m, 04-X-2009, sifted; 28 exx, ARC1113 (EMBL # HE615742), ARC1114 (EMBL # HE615743), ARC1118 (EMBL # HE615747), ARC1120 (EMBL # HE615749), ARC1121 (EMBL # HE615750), same data as holotype; 1 ex, Haia, S06°41.259', E145°00.822' to S06°41.102', E145°00.979', 900-1005 m, 27-IX-2009; 3 exx, Haia, S06°41.216', E145°00.945' to S06°40.976', E145°00.979', 970-1135 m, 04-X-2009, beaten; 3 exx, Haia, Supa station, S06°40.047', E145°03.464' to S06°39.815', E145°03.169', 1075-1240m, 30-IX-2009, beaten; 1 ex, Haia, Supa station, S06°40.047', E145°03.464' to S06°39.905', E145°03.880', 1075-1220 m, 01-X-2009, beaten; 1 ex, Haia, Supa station, S06°39.905', E145°03.880' to S06°39.796', E145°03.873', 1220-1320 m, 01-X-2009, beaten; 3 exx, Haia, Supa station, S06°40.047', E145°03.464' to S06°40.078', E145°03.207', 1075-1220 m, 02-X-2009, beaten.

Distribution.

Simbu Prov. (Haia). Elevation: 1005-1220 m.

Biology.

Mostly collected by beating foliage in montane forest.

Etymology.

This epithet is based on a combination of the Latin nouns squama (scale) and rostrum (snout) and refers to the clothed rostrum of the males.

Notes.

Trigonopterus squamirostris Riedel, sp. n. was coded as " Trigonopterus sp. 225" by Tänzler et al. (2012).