Trigonopterus costipennis Riedel

Riedel, Alexander, Taenzler, Rene, Balke, Michael, Rahmadi, Cahyo & Suhardjono, Yayuk R., 2014, Ninety-eight new species of Trigonopterus weevils from Sundaland and the Lesser Sunda Islands, ZooKeys 467, pp. 1-162 : 19

Taxon classification Animalia Coleoptera Curculionidae

18. Trigonopterus costipennis Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 18a). Length 2.32 mm. Color of tarsi and antennae ferruginous; remainder black. Body elongate subovate; in dorsal aspect and in profile with distinct constriction between pronotum and elytron. Rostrum with median ridge and pair of submedian ridges, anteriorly behind epistome scabrous; with sparse rows of suberect setae; epistome with transverse, angulate ridge. Pronotum with subapical constriction; disk coarsely punctate, scabrous; each puncture containing suberect, weakly clavate scale inserting at posterior rim. Elytra with striae marked by deep punctures; in front of each puncture with piliform, erect scale; intervals costate, subglabrous, weakly microreticulate; sutural interval and interval 7 swollen subapically, projecting from outline. Femora edentate. Metafemur subapically without stridulatory patch. Dorsal edge of meso- and metatibia denticulate. Abdominal ventrite 5 flat, microreticulate, almost nude, with few short setae. Penis (Fig. 18b) with apex asymmetrical, tip slightly upcurved and extended to the left; apical extension long; basal orifice ventrally simple; apodemes short, 0.5 × as long as body; ductus ejaculatorius with bulbus. Intraspecific variation. Length 2.04-2.51 mm. Female rostrum dorsally in apical half subglabrous, densely punctate; epistome simple.

Material examined.

Holotype (MZB): ARC2470 (EMBL # LM655807), E-Java, Mt. Semeru, road Senduro - Ranupani, sample 4, S08°01.801', E112°59.931', 1430 m, 13-XI-2011. Paratypes (MZB, SMNK, ZSM): E-Java Prov.: 2 exx, ARC2469 (EMBL # LM655806), ARC2472 (EMBL # LM655809), same data as holotype; 2 exx, ARC2471 (EMBL # LM655808), Mt. Semeru, road Senduro - Ranupani, sample 3, S08°02.052', E112°59.356', 1572 m, 13-XI-2011; 6 exx, Mt. Semeru, road Senduro - Ranupani, sample 4, S08°01.801', E112°59.931', 1430 m, 13-XI-2011; 1 ex, Mt. Semeru, road Senduro - Ranupani, sample 5, S08°01.952', E113°00.379', 1345 m, 13-XI-2011; 18 exx, ARC2480 (EMBL # LM655817), ARC2481 (EMBL # LM655818), Kediri, Besuki, Mt. Wilis, sample 1, S07°51.785', E111°50.188', 1379 m, 21-XI-2011; 12 exx, Kediri, Besuki, Mt. Wilis, sample 4, S07°51.852', E111°50.185', 1388 m, 22-XI-2011; 4 exx, ARC2489 (EMBL # LM655826), ARC2490 (EMBL # LM655827), Kediri, Besuki, Mt. Wilis, sample 5, S07°51.650', E111°50.174', 1485 m, 22-XI-2011; 10 exx, Kediri, Besuki, Mt. Wilis, sample 6, S07°51.709', E111°50.100', 1409 m, 22-XI-2011; 15 exx, Kediri, Besuki, Mt. Wilis, sample 7, S07°51.638', E111°50.010', 1432 m, 22-XI-2011.

Distribution.

E-Java Prov. (Mt. Semeru, Mt. Wilis). Elevation: 1345-1572 m.

Etymology.

This epithet is a combination of the Latin nouns costa (rib, ridge) and penna (elytron) refers to its elytral sculpture.

Notes.

Trigonopterus costipennis Riedel, sp. n. was coded as " Trigonopterus sp. 358".