Trigonopterus indigenus 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/AB740FCF-9088-4F59-A9B4-49C77605CBC0

taxon LSID

lsid:zoobank.org:act:AB740FCF-9088-4F59-A9B4-49C77605CBC0

treatment provided by

ZooKeys by Pensoft

scientific name

Trigonopterus indigenus Riedel
status

sp. n.

34. Trigonopterus indigenus Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 34a). Length 2.12 mm. Color of antennae and tarsi 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 becoming less distinct and replaced by coarse punctures anteriorly; epistome posteriorly with transverse ridge. Pronotum with disk densely punctate with coarse punctures; interspaces between punctures subglabrous, subequal to punctures´ diameter. Elytra with striae marked by small punctures; basal margin bordered by transverse row of deeper punctures joining stria 8; along humerus row of coarse punctures externally bordered by costa; in basal 1/2 suture bordered by row of small punctures; intervals subglabrous. Mesosternal receptacle ventrally with sparse golden scales. Anteroventral ridge of mesofemur and metafemur ending with blunt tooth. Metafemur with dorsoposterior edge denticulate; subapically with stridulatory patch. Abdominal ventrite 1 subglabrous, medially flat behind metacoxa convex; ventrite 2 costate; ventrite 5 flat, subglabrous. Penis (Fig. 34b) with sides of body subparallel; apex subtruncate with short median subacute extension; apodemes 2.8 × as long as body of penis; transfer apparatus complex, partly membranous; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 2.10-2.20 mm. Female rostrum slender, dorsally subglabrous, sublaterally punctate and with pair of indistinct furrows.

Material examined.

Holotype (MZB): ARC2767 (GenBank # MK260264), N-Sulawesi Prov., Tomohon, Rurukan, Gn. Mahawu, 01°21.697'N 124°51.885'E, 1176 m, sifted, 14-V-2012. Paratypes (ARC, MZB, SMNK, ZSM): N-Sulawesi Prov: 13 exx, ARC2768 (GenBank # MK260261), ARC2769 (GenBank # MK260263), same data as holotype; 2 exx, ARC6046 (GenBank # MK260267), ARC6047 (GenBank # MK260265), Tomohon, Rurukan, Gn. Mahawu, 01°21.409'N 124°51.535'E, 1166 m, 14-V-2012, sifted; 16 exx, Tomohon, Rurukan, Gn. Mahawu, 1200 m, 30-XI-1999, sifted; 7 exx, Tomohon, Rurukan, Gn. Mahawu, 01°21.409'N 124°51.535'E, 1126 m, 14-V-2012; 5 exx, Gn. Mahawu, Tomohon, 01°20.951'N 124°52.207'E, 1230 m, 14-V-2012, sifted; 13 exx, Gn. Mahawu, Tomohon, 01°20.791'N 124°52.268'E, 1230 m, sifted, 14-V-2012; 15 exx, Gn. Mahawu, Tomohon, 01°20.844'N 124°52.253'E, 1209 m, sifted, 15-V-2012; 12 exx, Gn. Mahawu, Tomohon, 01°20.819'N 124°52.194'E,1278 m, sifted, 15-V-2012; 4 exx, Gn. Mahawu, Tomohon, 01°20.751'N 124°52.129'E, 1305 m, sifted, 15-V-2012; 2 exx, ARC2919 (GenBank # MK260262), ARC2920 (GenBank # MK260266), Kotamobagu, Modoinding, Kakenturan, 00°47.053'N 124°30.413'E, 1228 m, sifted, 19-V-2012.

Distribution.

N-Sulawesi Prov. (Tomohon, Modoinding). Elevation 1170-1305 m.

Biology.

In leaf litter of montane forest.

Etymology.

This epithet is the Latin adjective indigenus, -a, -um (native).

Notes.

Trigonopterus indigenus Riedel, sp. n. was coded as " Trigonopterus sp. 389".