Trigonopterus singaporensis
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus singaporensis Riedel, 2022 sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Material examined
Holotype (ANIC): ARC5227 (GenBank # OP078706), Singapore, Bukit Timah Nat. Res., 01°21'N, 103°47'E, 100 m, 20-XI-1988. Paratype (SMNK): ARC5172, same data as holotype.
Diagnostic description
Holotype, male (Fig. 9a). Length 3.20 mm. Color black except antennae light ferruginous, legs dark ferruginous. Body in dorsal aspect subovate, with constriction between pronotum and elytron; profile dorsally convex. Rostrum with median and pair of submedian ridges; intervening furrows with sparse rows of erect, clavate scales; epistome with transverse, angulate ridge; forehead in profile with subangulate knob. Pronotum with indistinct subapical constriction; disk densely coarsely punctate, interspaces reticulate, weakly microreticulate; each puncture containing small recumbent seta. Elytra with humeri swollen, drawn ventrad, in dorsal aspect hardly projecting, rounded; striae distinct, deeply impressed, each with row of small punctures and sparse row of suberect scales; stria 8 along humerus with five large punctures; intervals costate-carinate, microreticulate; sutural interval with denser punctures. Metafemur subapically with stridulatory patch. Dorsal edge of pro- and mesatibia subbasally dentate, metatibia with small denticle. Abdominal ventrites 1–2 forming common cavity, at middle flat, subglabrous, with sparse erect scales; laterally with distinct rim; lateral rim of abdominal ventrite 2 in profile projecting dentiform; abdominal ventrite 5 coarsely punctate, with sparse erect scales, in apical half concave. Penis (Fig. 9b) with body relatively small, sides membranous, appearing weakly concave; apex angulate; transfer apparatus flagelliform, ca. 5.5 × as long as body; apodemes 4.4 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 3.16–3.20 mm.
Distribution
Singapore (Bukit Timah). Elevation: 100 m.
Etymology
This epithet is a Latinized adjective based on the island of Singapore.
Notes
Trigonopterus singaporensis sp. nov. is coded as “Trigonopterus sp. 742”. This species belongs to the Trigonopterus trigonopterus group. It is related to Trigonopterus siamensis sp. nov., from which it can be distinguished by its costate-carinate elytral intervals never having rows of coarse punctures and 18.1% p-distance of its cox1 sequence.
Original Description
- Riedel, A; 2022: Nine new species of Trigonopterus Fauvel (Coleoptera, Curculionidae) from Sundaland ZooKeys, 1124: 109-130. doi
Images
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![Figure 10. Map of the new Trigonopterus species of the T. trigonopterus group across the Sundaland area. Prepared using GeoMapApp (www.geomapapp.org; ; Ryan et al. 2009[1]); azure = T. grimmi sp. nov., yellow = T. siamensis sp. nov., red = " T. singaporensis sp. nov., magenta = T. trigonopterus Riedel.](/wiki/File:Zookeys-1124-109_article-89318_-g010.jpg)
Other References
- ↑ Ryan W, Carbotte S, Coplan J, O’Hara S, Melkonian A, Arko R, Weissel R, Ferrini V, Goodwillie A, Nitsche F, Bonczkowski J, Zemsky R (2009) Global Multi-Resolution Topography (GMRT) synthesis data set. Geochemistry, Geophysics, Geosystems 10(3): Q03014. https://doi.org/10.1029/2008GC002332
