Trigonopterus tialeorum 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 : 79-80

90. Trigonopterus tialeorum Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 90a). Length 3.59 mm. Color black; base of antennal scape ferruginous. Body subovate; in dorsal aspect with weak constric tion between pronotum and elytron; in profile with distinct constriction. Rostrum slender; dorsally with carina and pair of submedian ridges; at base with erect white elongate scales, apically replaced by bristles. Eyes large, medially approximate. Pronotum with disk subglabrous, with minute punctures; basal ¼ in front of elytral humeri with indistinct edge bordered by row of deep punctures; anteriorly evenly rounded towards sides; sides anteriorly with white recumbent scales. Elytra subglabrous, irregularly punctate with minute punctures; striae obsolete; basal margin straight; laterally behind humeri with ridge bordered by row of deep punctures. Femora with anteroventral ridge distinct, terminating at base; profemur at middle with tooth. Mesofemur and metafemur dorsally densely squamose with white scales. Metafemur with smooth dorsoposterior edge; subapically without stridulatory patch. Abdominal ventrite 5 hardly impressed at middle, sparsely setose with suberect setae, laterally sparsely squamose. Aedeagus (Fig. 90b) with sides of body dorsally carinate; apex flattened, subangulate; transfer apparatus flagelliform, subequal to body, relatively thick; ductus ejaculatorius subapically without bulbus. Intraspecific variation. Length 3.59-3.64 mm. Female rostrum dorsally subglabrous, sparsely punctate. Abdominal ventrite 5 flat, subglabrous, sparsely punctate.

Material examined.

Holotype (SMNK): ARC1829 (EMBL # HE616106), PAPUA NEW GUINEA, Eastern Highlands Prov., Okapa, Kimiagomo village, Verefare, S06°24.760', E145°35.575', 1940 m, 18-III-2010. Paratypes (NAIC, SMNK, ZSM): PAPUA NEW GUINEA, Eastern Highlands Prov.: 37 exx, same data as holotype; 22 exx, ARC1824 (EMBL # HE616101), ARC1825 (EMBL # HE616102), Okapa, Kimiagomo village, Afiyaleto, S06°25.593', E145°34.862', S06°25.212', E145°35.498', 1911 m, 18-III-2010; 36 exx, Okapa, Nakaloyate village, S06°24.760', E145°35.575', 1940 m, 18-III-2010; 8 exx, Okapa, Kofare village, S06°25.212', E145°35.498', 2140 m, 18-III-2010, beaten; 7 exx, Okapa, Anurite village, S06°24.760', E145°35.575', 1940 m, 18-III-2010, beaten; 10 exx, Okapa, Verefare village, S06°24.760', E145°35.575', 1940 m, 18-III-2010, beaten; 4 exx, Okapa, Afiyaleto village, S06°25.593', E145°34.862', 1940 m, 18-III-2010, beaten; 3 exx, Okapa, Afiyaleto village, S06°25.593', E145°34.862' to S06°25.212', E145°35.498', 1911 m, 18-III-2010, beaten; 4 exx, Okapa, Mayakumate village, 2100 m, 18-III-2010, beaten; 3 exx, Okapa, Isimomo, S06°25.003', E145°34.527', 2131 m, 18-III-2010; 3 exx, Okapa, Hamegoya, S06°25.727', E145°35.455' to S06°25.117', E145°35.225', 1891-2131 m, 18-III-2010; 7 Ex, ARC1826 (EMBL # HE616103), ARC1827 (EMBL # HE616104), ARC1828 (EMBL # HE616105), Aiyura, S06°21.033', E145°54.597', 2169 m, 06-II-2010; 1 ex, ARC1057 (EMBL # HE615688), Goroka, Mt. Gahavisuka, S06°00.864', E145°24.779', 2150-2250 m, 24-X-2009.

Distribution.

Eastern Highlands Prov. (Aiyura, Okapa). Elevation: 1911-2169 m.

Biology.

Beaten from foliage of montane forests.

Etymology.

This species is dedicated to the people of Papua New Guinea. The epithet is based on the family name Tiale, found on page 341 of the Papua New Guinea Telephone Directory of 2010 and treated in genitive plural.

Notes.

Trigonopterus tialeorum Riedel, sp. n. was coded as " Trigonopterus sp. 59" by Tänzler et al. (2012).