Trigonopterus strombosceroides 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 : 74-75

84. Trigonopterus strombosceroides Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 84a). Length 2.75 mm. Color black; tarsi and antenna ferruginous. Body elongate; in dorsal aspect and in profile with distinct constriction between pronotum and elytron. Rostrum with longitudinal ridges and rows of coarse punctures, with sparse suberect scales; epistome flat, with small punctures. Pronotum with marked subapical constriction, anteriorly densely punctate; disk deeply sculptured, with median ridge and pair of broad submedian ridges; ridges densely punctate; behind constriction anteriorly with pair of lateral angular protrusions. Elytra with striae deeply incised; with sparse narrow cream-colored scales; intervals irregularly costate, with rows of small punctures, along two transverse bands depressed; apex rounded. Femora edentate. Metafemur with weakly denticulate dorsoposterior edge, subapically with stridulatory patch. Tarsomere 3 small, hardly larger than preceding, onychium ca. 1.5 X longer than tarsomere 3. Abdominal ventrites 1-2 with common impression; abdominal ventrite 5 concave, tomentose. Aedeagus (Fig. 84b) apically subtruncate, without setae; with asymmetrical transfer apparatus; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.75-2.93 mm.

Material examined.

Holotype (MZB): ARC0546 (EMBL # FN429252), WEST NEW GUINEA, Jayapura Reg., Cyclops Mts, Sentani, S02°31.776', E140°30.215', 945 m, 21-XI-2007, sifted. Paratypes (ARC, SMNK, ZSM): WEST NEW GUINEA, Jayapura Reg., Cyclops Mts, Sentani: 4 exx, ARC0547 (EMBL # FN429253), ARC0548 (EMBL # FN429254), same data as holotype; 1 ex (marked as ARC0090), 1100 m, 23-XII-2004, sifted; 2 exx, S02°31.425', E140°30.474', 1265 m, 30-XI-2007, sifted.

Distribution.

Jayapura Reg. (Cyclops Mts). Elevation: 945-1265 m.

Biology.

Sifted from leaf litter in primary forest.

Etymology.

This epithet is a combination of the name Stromboscerinae and the Latin ending -oides (having the form of) and refers to the species´ resemblance in habitus with members of this subfamily of Dryophthoridae .

Notes.

Trigonopterus strombosceroides Riedel, sp. n. was coded as " Trigonopterus sp. 37" by Riedel et al. (2010) and Tänzler et al. (2012), respectively " Trigonopterus spak" in the EMBL/GenBank/DDBJ databases.