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Holotype, male (Fig. 4a). Length 2.60 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 coarsely rugose-punctate, with median ridge and pair of irregular submedian ridges; epistome with indistinct, transverse, subangulate ridge. Pronotum anterolaterally angularly projecting; with distinct subapical constriction; disk scabrous, punctures each with one erect seta; interspaces microreticulate; with median ridge. Elytra with striae deeply impressed, each with row of suberect bristles; intervals irregularly costate, almost tuberculate, nude, weakly microreticulate; interval 7 swollen subapically, laterally weakly projecting. Femora edentate. Metafemur subapically with stridulatory patch and transverse ridge. Abdominal ventrite 5 flat, densely punctate, setose. Penis (Fig. 4b) in profile markedly curved; in dorsal aspect body slender, sides subparallel; apex with median, subtriangular extension; transfer apparatus flagelliform, 1.2 × as long as body; apodemes 2.2 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.23–2.75 mm. Color of sutural interval rarely ferruginous, usually black. Female rostrum dorsally with pairs of lateral and submedian furrows; epistome simple. Elytral apex with interval 7 and sutural interval more or less distinctly projecting. Penis with flagelliform transfer apparatus 1.2–1.5 × longer than body.
Holotype (MZB): ARC2680 (EMBL # LM655938), 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.: 2 exx, ARC3583 (EMBL # LM656016), ARC3584 (EMBL # LM656017), Ciwidey, Mt. Tikukur, sample 2, S07°07.816', E107°24.298', 1784 m, 01-XII-2011; 4 exx, ARC2512 (EMBL # LM655849), ARC2513 (EMBL # LM655850), Ciwidey, Mt. Tikukur, sample 3, S07°07.723', E107°23.898', 1929 m, 01-XII-2011; 2 exx, ARC2516 (EMBL # LM655853), Bandung, Lembang, Pangli, Mt. Bukittinggul, sample 1, S06°48.810', E107°44.216', 1753 m, 03-XII-2011; 2 exx, ARC2517 (EMBL # LM655854), ARC3585 (EMBL # LM656018), Bandung, Lembang, Pangli, Mt. Bukittinggul, sample 2, S06°48.845', E107°44.074', 1898 m, 03-XII-2011; 3 exx, ARC2724 (EMBL # LM655980), Garut, Wanaraja, Talagabodas, sample 1, S07°12.511', E108°03.554', 1741 m, 27-IV-2012; 7 exx, ARC2717 (EMBL # LM655973), ARC2718 (EMBL # LM655974), ARC2719 (EMBL # LM655975), ARC3595 (EMBL # LM656026), ARC3596 (EMBL # LM656027), ARC3597, Garut, Wanaraja, Talagabodas, sample 2, S07°11.966', E108°03.984', 1719 m, 27-IV-2012; 8 exx, ARC2715 (EMBL # LM655971), ARC2716 (EMBL # LM655972), Garut, Cikajang, Mt. Payung, sample 3, S07°25.320', E107°48.259', 1560 m, 26-IV-2012; 3 exx, ARC0186 (EMBL # LM655411), ARC0158, Garut, Cilawu, Mt. Cikuray, sample 2, S07°18.840', E107°52.512', 1800 m, 24-IX-2005; 4 exx, Garut, Cilawu, Mt. Cikuray, sample 4, S07°18.927', E107°52.460', 1930 m, 24-IX-2005; 2 exx, Garut, Cilawu, Mt. Cikuray, sample 3, S07°19.075', E107°52.338', 2050 m, 24-IX-2005; 13 exx, ARC2679 (EMBL # LM655937), same data as holotype; 4 exx, Mt. Sawal, Panjalu, Tembong, sample 3, S07°11.102', E108°16.310', 1569 m, 29-XI-2011; 9 exx, ARC2509 (EMBL # LM655846), ARC2510 (EMBL # LM655847), ARC2511 (EMBL # LM655848), Mt. Sawal, Panjalu, Tembong, sample 4, S07°11.275', E108°16.280', 1723 m, 29-XI-2011.
W-Java Prov. (Mt. Bukittinggul, Mt. Cakrabuana, Mt. Cikuray, Mt. Payung, Mt. Sawal, Talagabodas, Mt. Tikukur). Elevation: 1560–2050 m.
This epithet is based on the Greek allos (other) and the Latin patria (homeland) and refers to its fragmented distribution.
Trigonopterus allopatricus Riedel, sp. n. was coded as “Trigonopterus sp. 305”.
- 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