Trigonopterus fusiformis 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 : 29

31. Trigonopterus fusiformis Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 31a). Length 2.63 mm. Color black, legs and antenna ferruginous. Body subrhomboid; almost without constriction between pronotum and elytron; in profile dorsally flat, towards apex convex. Rostrum in apical half dorsally flattened, slightly widened, rugose-punctate; basal half markedly swollen in profile, narrow in dorsal aspect; with indistinct median ridge, densely punctate; dorsolaterally with pair of wide furrows containing erect narrow scales. Pronotum subglabrous, punctate, punctures becoming larger and denser towards apex. Elytra densely punctate; strial punctures slightly larger than minute punctures on intervals; striae impressed as fine lines. Anteroventral ridge of femora terminating with tooth in apical third; tooth largest in metafemur. Metafemur laterally markedly flattened; dorsally with row of silvery scales; posteroventral ridge indistinct, at middle with denticle; dorsoposterior edge weakly denticulate; subapically with stridulatory patch. Aedeagus (Fig. 31b). Body with sides subparallel, extended dorsad; profile of body subtriangular; apex subtruncate, subglabrous; transfer-apparatus complex, symmetrical; ductus ejaculatorius with bulbus. Intraspecific variation. No female specimen available.

Material examined.

Holotype (MZB): ARC1807 (EMBL # HE616084), WEST NEW GUINEA, Jayawijaya Reg., Bokondini, S03°41.787', E138°40.229' to S03°41.778', E138°40.129', 1705-1710 m, 17-VII-2010. Paratype (SMNK): WEST NEW GUINEA, Jayawijaya Reg.: 1 ex, ARC1805 (EMBL # HE616082), Bokondini, S03°40.345', E138°42.386' to S03°40.255', E138°42.189', 1655-1700 m, 18-VII-2010.

Distribution.

Jayawijaya Reg. (Bokondini). Elevation: 1700-1705 m.

Biology.

Beaten from foliage of montane forests.

Etymology.

This epithet is a combination of the Latin noun fusus (spindle) and the suffix -formis (-shaped) and refers to the habitus of this species.

Notes.

Trigonopterus fusiformis Riedel, sp. n. was coded as " Trigonopterus sp. 107" by Tänzler et al. (2012).