Trigonopterus dacrycarpi 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: 21-22

publication ID

http://dx.doi.org/10.3897/zookeys.467.8206

publication LSID

lsid:zoobank.org:pub:319040F0-1D0F-4950-92BF-A2FF705517AF

persistent identifier

http://treatment.plazi.org/id/7BAF7B57-28A9-69BF-C0ED-74844204409B

treatment provided by

ZooKeys by Pensoft

scientific name

Trigonopterus dacrycarpi Riedel
status

sp. n.

Taxon classification Animalia Coleoptera Curculionidae

21. Trigonopterus dacrycarpi Riedel  sp. n.

Diagnostic description.

Holotype, male (Fig. 21a). Length 2.88 mm. Color ferruginous; dorsal surface of head and pronotum dark ferruginous, center of elytron black with bronze lustre. Body in dorsal aspect with marked constriction between pronotum and elytron; in profile dorsally convex. Rostrum in apical third coarsely punctate; in basal half with median and pair of submedian ridges; intervening furrows punctate, each with sparse row of suberect setae; epistome posteriorly with transverse, angulate ridge forming distinct median denticle. Pronotum with sides subparallel, anteriorly abruptly rounded to subapical constriction; disk coarsely punctate, reticulate; each puncture containing inconspicuous seta; sublaterally each with two sparse clusters of recumbent, elongate, cream-colored scales; with distinct median ridge. Elytra with humeri swollen, laterally projecting; interval 5 in front of middle swollen, dorsally projecting; interval 6 simple; striae indistinct; intervals flat, punctate; subbasally coarsely punctate, with recumbent, yellowish, almond-shaped scales; center less densely punctate with punctures containing minute setae, interspaces polished. Anteroventral ridge of femora distinct, in meso- and metafemur forming large blunt tooth. Metafemur subapically with stridulatory patch. Dorsal edge of tibiae subbasally with angulation. Abdominal ventrite 5 flat, coarsely punctate, basally with rows of upcurved piliform scales. Penis (Fig. 21b) with sides of body subparallel; apex subangulate; transfer apparatus compact; apodemes 1.8 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.36-3.06 mm. Color of legs and elytral base ferruginous or dark ferruginous, almost black. Female body more slender. Female rostrum dorsally punctate-rugose, with median and pair of submedian subglabrous costae; epistome simple. Female elytra subovate, without swellings, lateral contour convex, humeri simple; scales near base indistinct.

Material examined.

Holotype (MZB): ARC1527 (EMBL # LM655625), West Nusa Tenggara Prov., Sumbawa, Batu Dulang, Mt. Batu Pasak, sample 3, S08°37.524', E117°15.423', 1385 m, 18-IV-2010. Paratypes (MZB, SMNK, ZSM): 2 exx, ARC1525 (EMBL # LM655623), ARC1526 (EMBL # LM655624), same data as holotype; 1 ex, Batu Dulang, Mt. Batu Pasak, sample 5, S08°37.005', E117°15.790', 1350 m, 18-IV-2010; 1 ex, ARC1532 (EMBL # LM655630), Sumbawa, Tepal, Pc. Nengas, sample 7, S08°35.176', E117°08.295', 1490 m, 16-IV-2010; 13 exx, ARC2200 (EMBL # LM655656), ARC2201 (EMBL # LM655657), ARC2202 (EMBL # LM655658), ARC2203 (EMBL # LM655659), Flores, Mt. Ranaka, sample 8, S08°37.781', E120°31.184', 1730 m, 10-III-2011; 1 ex, ARC2194 (EMBL # LM655650), Flores, Lake Ranamese, sample 3, S08°37.024', E120°33.400', 1270 m, 08-III-2011.

Distribution.

West Nusa Tenggara Prov., Sumbawa (Batu Dulang, Tepal), East Nusa Tenggara Prov., Flores (Mt. Ranaka, L. Ranamese). Elevation: 1270-1730 m.

Etymology.

This epithet is based on the name of Dacrycarpus  trees under which this weevil was usually sifted - it may however feed on other plants occurring in the same habitat.

Notes.

Trigonopterus dacrycarpi  Riedel, sp. n. was coded as " Trigonopterus  sp. 329". Cox1 sequences of the populations from Sumbawa and Flores differ 7.5-9.7% p-distance, but morphologically no differences could be found.