Trigonopterus castaneipennis 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/91E966AB-EC57-4A75-967B-262C289AE1C7

taxon LSID

lsid:zoobank.org:act:91E966AB-EC57-4A75-967B-262C289AE1C7

treatment provided by

ZooKeys by Pensoft

scientific name

Trigonopterus castaneipennis Riedel
status

sp. n.

14. Trigonopterus castaneipennis Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 14a). Length 2.55 mm. Color of antennae ferruginous; legs and base of elytra dark ferruginous; remainder black. Body subovate; in dorsal aspect with moderate constriction between pronotum and elytron; in profile dorsally convex. Rostrum dorsally with median and pair of submedian ridges; intervening furrows with sparse, erect scales; epistome short, posteriorly with transverse ridge. Pronotum with lateral edges weakly converging, before apex rounded to subapical constriction; disk with pair of distinct longitudinal impressions, medially broadly swollen, densely punctate with coarse punctures, narrow interspaces subglabrous, with narrow median costa; with yellowish slender recumbent scales. Elytra sparsely punctate with minute punctures; at humeral angles with some coarse punctures; striae hardly marked by hairlines; in basal 1/3 and subapically with sparse yellow recumbent scales. Femora dentate, with acute tooth; anteroventral ridge of meso- and metafemur crenate. Metafemur with dorsoposterior edge denticulate; subapically with stridulatory patch. Metatibia subbasally widened, dorsal edge serrate. Metatibia curved. Abdominal ventrites 1-2 concave, subglabrous, sparsely punctate, with few scattered piliform scales; ventrite 5 concave, sparsely punctate. Penis (Fig. 14b) with sides of body subparallel, subapically widened forming knobs with tufts of long curly setae; apodemes 3.3 × as long as body of penis; transfer apparatus flagelliform, 3.5 × longer than body of penis; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 2.25-2.55 mm. Female rostrum dorsally with median and pair of submedian glabrous costae; epistome simple. Female ventrite 5 flat.

Material examined.

Holotype (MZB): ARC2832 (GenBank # MK260387), S-Sulawesi Prov., Pc. Palopo, Gn. Sampuna, 02°56.545'S 120°05.595'E, 1101 m, sifted, 29-V-2012. Paratypes (MZB, SMNK): S-Sulawesi Prov.: 9 exx, ARC2833 (GenBank # MK260389), ARC2834 (GenBank # MK260390), ARC2835 (GenBank # MK260388), same data as holotype; 20 exx, Pc. Palopo, Gn. Sampuna, 02°56.545'S 120°05.595'E, 1101 m, sifted, 02-V-2013.

Distribution.

S-Sulawesi Prov. (Pc. Palopo). Elevation ca. 1100 m.

Biology.

In leaf litter of montane forest.

Etymology.

This epithet is an adjectival combination of the Latin adjective castaneus, -a, -um (chestnut brown) and noun penna (wing, elytron), with the second declension adjectival ending -is.

Notes.

Trigonopterus castaneipennis Riedel, sp. n. was coded as " Trigonopterus sp. 419".