Cyclorhipidion armiger (Schedl, 1953) Smith & Beaver & Cognato, 2020

Smith, Sarah M., Beaver, Roger A. & Cognato, Anthony I., 2020, A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China, ZooKeys 983, pp. 1-442 : 1

Cyclorhipidion armiger (Schedl, 1953) comb. nov. Fig. 40E, F, K

Xyleborus armiger Schedl, 1953c: 28.

Type material.

Lectotype (NHMW).

New records.

China: Jiangxi, Longnan County, Jiulianshan, 24.541347; 114.460357, 613 m, 03.vii.2018, Lv-Jia & SC Lai, ex Anacardiaceae (LYLC, 1). S. Yunnan, Xishuangbanna, 23 km NW Jinghong, vic. Na Ban village (NNNR), 22°10'N, 100°39'E, 700-1000 m, Div. Fallen, v.-vii.2009, L. Meng (NKME, 1; RABC, 1); as previous except: 28 km NW Jinghong, vic. An Ma Xi Zhan (NNNR), 22°12'N, 100°38'E, 700 m, forest, EKL, 28.vi.2008, A. Weigel (MSUC, 1). Taiwan: Ilan Co., Yunshan, Fushan Res. Center-TFRI, 2.iii.2015, LJ Wang, ex log (RABC, 1). Thailand: Chiangmai, Fang, 12-19.iv.1958, T.C. Maa (BPBM, 1). Vietnam: Ha Tay, Ba Vi N.P. (lake lodge), 196 m, 3-4.vii.2008, J.B. Heppner (FSCA, 1). Thua Thien-Hue, Bach Ma N.P., 16.19831, 107.85639, 1386 m, 17-18.ii.2017, VN70, A.I. Cognato, T.A. Hoang, ex 3 cm branch (MSUC, 1). Vinh Phuc, Tam Dao, 985 m, 1-7.v.2012, J.B. Heppner (FSCA, 1).

Diagnosis.

2.6-3.3 mm long (mean = 2.89 mm; n = 9); 2.5-2.71 × as long as wide.

This species is distinguished by the elytral disc with a median shallow saddle-like impression; declivital interstriae 2 granulate; declivity very steep, posterolateral margin feebly costate; elytral apex bearing four denticles, one on each interstriae 1 and 2; declivital face bearing four equally sized and spaced tubercles along interstriae 1; and striae slightly impressed.

Similar species.

Cyclorhipidion miyazakiense , C. obesulum , C. xyloteroides .

Distribution.

China (Fujian, Jiangxi*, Sichuan, Yunnan), Thailand*, Taiwan*, Vietnam*.

Host plants.

Recorded only from an unknown genus of Anacardiaceae .

Remarks.

The holotype of was examined and is here transferred to Cyclorhipidion because of the following characters: most of body covered with dense pubescence and discal strial and interstrial punctures strongly confused, pronotum and elytra rounded, with no conspicuous edges or carinas, semi-circular with evenly rounded outer edge, antennal club type 3, visible scutellum and lack of mycangial tufts.

Figures

Figure 40. Dorsal, lateral and declivital view of Cyclorhipidion amasoides holotype, 4.2 mm (A, B, I), C. amputatum holotype, 5.0 mm (C, D, J), C. armiger lectotype, 2.6 - 3.3 mm (E, F, K), and C. bodoanum, 1.9 - 2.2 mm (G, H, L).