Trigonopterus cahyoi
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus cahyoi Riedel sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype, male (Fig. 17a). Length 3.03 mm. Color of legs and head ferruginous, remainder black. Body elongate; in dorsal aspect with marked constriction between pronotum and elytron; in profile dorsally with indistinct constriction. Rostrum with median carina terminating on forehead; with pair of submedian ridges; intervening furrows each with row of erect, piliform scales; anteriorly behind epistome ridges shortened; epistome with transverse, angulate ridge forming distinct median denticle. Pronotum anterolaterally subangularly projecting; with indistinct subapical constriction; disk coarsely rugose-punctate; each puncture containing suberect piliform scale; with median ridge. Elytra with striae deeply impressed; each with row of suberect piliform scales; intervals costate, ridges transversely rugose; costa of interval 2 shortened at base; interval 7 swollen subapically, laterally weakly projecting; apex extended ventrad, beak-shaped. Meso- and metafemur with anteroventral ridge forming indistinct blunt tooth. Metafemur subapically with stridulatory patch and transverse row of denticles. Abdominal ventrite 5 subapically with shallow pit. Penis (Fig. 17b) with body in profile moderately curved ventrad; in dorsal aspect sides subparallel in basal half, anteriorly gently diverging; apex medially with small rounded extension; apodemes 2.0 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.05–3.19 mm. Color of elytra completely black or base and sutural interval ferruginous. Body of females slender; males slightly wider, especially between humeri. Female rostrum dorsally with pair of lateral furrows, pair of submedian furrows continued apicad by coarse punctures; epistome simple. Female abdominal ventrite 5 flat.
Material examined
Holotype (MZB): ARC2678 (EMBL # LM655936), West Java, Prov., Sumedang, Sukajadi, Mt. Cakrabuana, sample 6, S07°01.943', E108°08.029', 1593 m, 20-IV-2012. Paratypes (MZB, SMNK, ZSM): W-Java Prov.: 9 exx, Sumedang, Sukajadi, Mt. Cakrabuana, sample 4, S07°01.734', E108°08.059', 1530 m, 19-IV-2012; 8 exx, same data as holotype; 59 exx, ARC0155, ARC0172, ARC0193 (EMBL # LM655417), ARC0194 (EMBL # LM655418), ARC0195 (EMBL # LM655419), Ciamis, Mt. Sawal, Batu Cakra, sample 1, S07°14.920', E108°15.762', 990 m, 01-X-2005 (MZB); 13 exx, sample 3, S07°14.900', E108°15.893', 940 m, 01-X-2005; 11 exx, Ciamis, Mt. Sawal, Blok Cireong, sample 2, S07°14.127', E108°15.568', 1120 m, 01-X-2005; 3 exx, ARC2504 (EMBL # LM655841), Ciamis, Mt. Sawal, Panjalu, Tembong, sample 1, S07°10.528', E108°16.423', 1314 m, 29-XI-2011; 8 exx, ARC2508 (EMBL # LM655845), Ciamis, Mt. Sawal, Panjalu, Tembong, sample 3, S07°11.102', E108°16.310', 1569 m, 29-XI-2011.
Distribution
W-Java Prov. (Mt. Cakrabuana, Mt. Sawal). Elevation: 990–1593 m.
Etymology
The species is named for arachnologist Cahyo Rahmadi, who collected the first specimens of this species. The epithet is a noun in the genitive case.
Notes
Trigonopterus cahyoi Riedel, sp. n. was coded as “Trigonopterus sp. 320” by Tänzler et al. (2014)[1].
Original Description
- Riedel, A; Tänzler, R; Balke, M; Rahmadi, C; Suhardjono, Y; 2014: Ninety-eight new species of Trigonopterus weevils from Sundaland and the Lesser Sunda Islands ZooKeys, (467): 1-162. doi
Images
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Other References
- ↑ Tänzler R, Toussaint E, Suhardjono Y, Balke M, Riedel A (2014) Multiple transgressions of Wallace’s Line explain diversity of flightless Trigonopterus weevils on Bali. Proceedings of the Royal Society B: Biological Sciences 281: 20132528. doi: 10.1098/rspb.2013.2528
