Trigonopterus katayoi 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 : 39

43. Trigonopterus katayoi Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 43a). Length 2.68 mm. Color black, elytra in basal third orange. Body slender, ovate; without constriction between pronotum and elytron; in profile evenly convex. Rostrum in apical third smooth; in basal 2/3 with median ridge and pair of sublateral ridges; furrows containing sparse row of setae. Eyes with dorsal margin carinate. Head bordering eye with bean-shaped impression. Pronotum subglabrous, sparsely punctate with minute punctures. Elytra subglabrous, punctation confused with minute punctures; striae hardly visible, impressed as very fine lines; lateral stria behind humeri with row of ca. 5 deep punctures. Femora subglabrous, including dorsum of metafemur without scales. Mesofemur on posterior surface with longitudinal ridge. Metafemur on posterior surface with indistinct longitudinal impression; dorsoposteriorly simple, subapically without stridulatory patch. Meso- and metatibia subapically simple, with uncus, without premucro. Aedeagus (Fig. 43b). Apex symmetrical, with median acute extension; transfer apparatus small, dentiform; endophallus without distinct sclerites; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.50-2.93 mm. Color of elytral base orange in specimens from Goroka, dark ferruginous in specimens from Okapa.

Material examined.

Holotype (SMNK): ARC1052 (EMBL # HE615683), PAPUA NEW GUINEA, Eastern Highlands Prov., Goroka, Mt. Gahavisuka, S06°00.864', E145°24.779', 2150-2250 m, 22-IX-2009. Paratypes (NAIC, SMNK, ZSM): PAPUA NEW GUINEA, Eastern Highlands Prov.: 2 exx, ARC1051 (EMBL # HE615682), ARC1053 (EMBL # HE615684), same data as holotype; 3 exx, Goroka, Mt. Gahavisuka, S06°00.864', E145°24.779', 2150-2280 m, 24-X-2009; 2 exx, ARC1836 (EMBL # HE616113), ARC1837 (EMBL # HE616114), Okapa, Konafi to Isimomo, S06°25.593', E145°34.862', 1911-2131 m, 18-III-2010; 2 exx, ARC1838 (EMBL # HE616115), Okapa, Kimiagomo village, Afiyaleto, S06°25.593', E145°34.862' to S06°25.212', E145°35.498', 1911 m, 18-III-2010.

Distribution.

Eastern Highlands Prov. (Goroka, Okapa). Elevation: 1911-2150 m.

Biology.

Beaten from foliage of montane forests.

Etymology.

This species is named in honour of our colleague Katayo Sagata (Goroka) who greatly supported our field-work in PNG and who collected some of the specimens.

Notes.

Trigonopterus katayoi Riedel, sp. n. was coded as " Trigonopterus sp. 97" by Tänzler et al. (2012).