Trigonopterus invalidus Riedel

Riedel, Alexander & Narakusumo, Raden Pramesa, 2019, One hundred and three new species of Trigonopterus weevils from Sulawesi, ZooKeys 828, pp. 1-153 : 1

publication ID

https://dx.doi.org/10.3897/zookeys.828.32200

publication LSID

lsid:zoobank.org:pub:2A63A74D-8B30-4C83-AB74-7BAF6AF6984E

persistent identifier

https://treatment.plazi.org/id/990C1308-78A9-43FF-B08F-1F8F8220AF7C

taxon LSID

lsid:zoobank.org:act:990C1308-78A9-43FF-B08F-1F8F8220AF7C

treatment provided by

ZooKeys by Pensoft

scientific name

Trigonopterus invalidus Riedel
status

sp. n.

36. Trigonopterus invalidus Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 36a). Length 2.43 mm. Color of antennae and tarsi ferruginous; remainder black. Body subovate; in profile dorsally convex. Rostrum dorsally with median carina; in basal 1/2 with submedian ridges; intervening furrows with sparse rows of piliform scales; epistome indistinct. Pronotum with disk densely punctate with small punctures; interspaces between punctures subglabrous. Elytra with striae marked by minute punctures and indistinct hairlines; basal margin bordered by transverse row of deeper punctures, curving along humeri; intervals flat, subglabrous. Femora edentate. Meso- and metafemur with anteroventral ridge distinct, simple. Metafemur with anterior surface coarsely punctate, each puncture with elongate recumbent silvery scale; with dorsoposterior edge weakly denticulate; subapically with stridulatory patch. Abdominal ventrites 1-2 concave, subglabrous; ventrite 5 flat, coarsely punctate. Penis (Fig. 36b) with sides converging in basal 1/2, anteriorly subparallel; apex subangulate, with few setae; basal orifice of body ventrally with angulate extensions; apodemes 2.2 × as long as body of penis; transfer apparatus complex, small, elongate; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 2.43-2.55 mm. Female rostrum slender, dorsally subglabrous, with two submedian rows of punctures, with pair of sublateral furrows. Female abdominal ventrite 5 flat, punctate, with sparse scales.

Material examined.

Holotype (MZB): ARC3189 (EMBL # LN884972), S-Sulawesi Prov., Selayar Is, Pagarangan, 06°18.334'S 120°30.794'E, 545 m, beaten, 24-IV-2013. Paratypes (MZB, SMNK): 3 exx, ARC3190 (GenBank # MK260517), ARC3191 (GenBank # MK260516), same data as holotype.

Distribution.

S-Sulawesi Prov. (Selayar Is). Elevation ca. 545 m.

Biology.

On foliage in lowland forests.

Etymology.

This epithet is the Latin adjective invalidus, -a, -um (invalid, weak) and refers to the state of the holotype.

Notes.

Trigonopterus invalidus Riedel, sp. n. was coded as " Trigonopterus sp. 502".