Trigonopterus volcanorum 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/CEECBD3C-1A0F-4F08-A7BD-89E65FA3B294

taxon LSID

lsid:zoobank.org:act:CEECBD3C-1A0F-4F08-A7BD-89E65FA3B294

treatment provided by

ZooKeys by Pensoft

scientific name

Trigonopterus volcanorum Riedel
status

sp. n.

101. Trigonopterus volcanorum Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 101a). Length 2.34 mm. Color of antennae and legs ferruginous; remainder black. Body subovate; in dorsal aspect with weak constriction between pronotum and elytron; in profile dorsally convex. Rostrum dorsally with median and pair of submedian ridges; intervening furrows with sparse rows of subrecumbent setae; epistome short, weakly swollen. Pronotum with disk densely punctate with coarse punctures except along impunctate median line; interspaces between punctures subglabrous, subequal to or smaller than punctures´ diameter; in subbasal 1/4 punctation sparse. Elytra with striae marked by small punctures; basal margin bordered by transverse row of deeper punctures; stria 8 along humerus with row of seven large punctures; sutural interval subbasally swollen, with shortened row of small punctures; intervals subglabrous. Femora edentate. Metafemur with dorsoposterior edge denticulate; subapically with stridulatory patch. Abdominal ventrite 1 cavernous, at middle subglabrous, lateral rims with sparse erect scales; ventrite 2 costate; ventrite 5 subglabrous, punctate, with shallow impression. Penis (Fig. 101b) with sides of body subparallel; apex weakly rounded, without setae; apodemes 2.2 × as long as body of penis; transfer apparatus complex; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 2.20-2.34 mm. Female rostrum slender, in basal 1/4 with median and pair of submedian ridges; anteriorly subglabrous with submedian row of punctures and sublateral pair of furrows; epistome simple.

Material examined.

Holotype (MZB): ARC2800 (GenBank # MK260273), N-Sulawesi Prov., Airmadidi, Gn. Klabat, 01°26.988'N 125°01.244'E, 1392 m, sifted, 17-V-2012. Paratypes (MZB, SMNK): N-Sulawesi Prov.: 1 ex, ARC2801 (GenBank # MK260274), same data as holotype; 1 ex, ARC2792 (GenBank # MK260272), Airmadidi, Gn. Klabat, 01°26.635'N 125°00.823'E, 1031 m, sifted, 16-V-2012; 1 ex, Airmadidi, Gn. Klabat, 01°26.754'N 125°01.014'E, 1145 m, sifted, 16-V-2012; 5 exx, Airmadidi, Gn. Klabat, 01°26.430'N 125°00.622'E, 889 m, sifted, 17-V-2012; 1 ex, ARC2757 (GenBank # MK260271), Tomohon, Rurukan, Gn. Mahawu, 01°21.409'N 124°51.535'E to 01°21.370'N 124°51.676'E, 1126-1231 m, 14-V-2012.

Distribution.

N-Sulawesi Prov. (Mt Klabat, Tomohon). Elevation 890-1400 m.

Biology.

In leaf litter of montane forest.

Etymology.

This epithet is a noun in genitive plural. It refers to the species´ occurrence on two active volcanoes.

Notes.

Trigonopterus volcanorum Riedel, sp. n. was coded as " Trigonopterus sp. 392".