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Holotype, male (Fig. 85a). Length 2.78 mm. Color of legs and head ferruginous, remainder black. Body elongate; in dorsal aspect with marked constriction between pronotum and elytron; with distinct constriction in profile. Rostrum with median ridge and pair of submedian ridges, intervening furrows punctate; punctures each with erect narrow scale; epistome with transverse, subangulate ridge. Pronotum anterolaterally angularly projecting; with distinct subapical constriction; disk scabrous, punctures each with one small erect scale; interspaces dull, greyish, markedly microreticulate; with irregular median ridge. Elytra with striae deeply impressed, each with row of narrow suberect scales; intervals irregularly costate-tuberculate, with minute recumbent scales; interval 5 subbasally swollen; interval 7 swollen subapically, laterally weakly projecting. Femora edentate, with crenulate anteroventral ridge. Metafemur subapically with stridulatory patch and transverse row of denticles. Abdominal ventrite 5 flat, densely punctate, setose. Penis (Fig. 85b) with body in profile moderately curved; in dorsal aspect sides subparallel, subapically slightly widened; apex with median, acute extension; transfer apparatus flagelliform, 1.5 × longer than body; apodemes 2.4 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.59–2.84 mm. Female rostrum dorsally subglabrous, with pair of lateral furrows, coarsely punctate; epistome simple.
Holotype (MZB): ARC2737 (EMBL # LM655993), East Sumatra, Lampung Prov., Gisting, Sidokaton, Mt. Tanggamus, sample 1, S05°25.475', E104°41.063', 1539 m, 03-V-2012. Paratypes (MZB, SMNK, ZSM): E-Sumatra, Lampung Prov., Gisting, Sidokaton, Mt. Tanggamus: 2 exx, ARC2741 (EMBL # LM655997), ARC2742 (EMBL # LM655998), sample 2, S05°25.491', E104°41.006', 1636 m, 03-V-2012; 4 exx, ARC2744 (EMBL # LM656000), sample 3, S05°25.508', E104°40.882', 1759 m, 03-V-2012; 3 exx, sample 4, S05°25.484', E104°41.027', 1623 m, sifted.
Lampung Prov. (Mt. Tanggamus). Elevation: 1539–1759 m.
This epithet is based on the Latin adjective squalidus (rough, dirty) and refers to the rough integument often covered with dirt incrustations.
Trigonopterus squalidus Riedel, sp. n. was coded as “Trigonopterus sp. 371”.
- 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