Microperus corporaali (Eggers, 1923)

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

Microperus corporaali (Eggers, 1923) Fig. 66E, F, K

Xyleborus corporaali Eggers, 1923: 210.

Coptodryas corporaali (Eggers): Wood and Bright 1992: 823.

Microperus corporaali (Eggers): Hulcr 2010: 111.

Type material.

Lectotype (NMNH).

New records.

China: Guangxi, Shangsi, 25.iii.2018, Y. Li, ex Quercus (UFFE, 3). Yunnan, Xishuangbanna, 20 km NW Jinghong, vic. Man Dian (NNNR), 22°07.80'N, 100°40.0'E, 730 m, forest, EK, 6.iv.2009, L. Meng (RABC, 1). Vietnam: Cao Bang, 22°34.5'N, 105°52.4'E, ~ 1080 m, 14.iv.2014, VN31, Cognato, Smith, Pham, ex emerging from bark of standing dead tree (MSUC, 7). Ninh Binh, Cuc Phuong N.P., 20.25000, 105.71495, 7.iii.2018, 158 m, A.I. Cognato, S.M. Smith, VN 150, ex 4 cm diameter living branch (MSUC, 12).

Diagnosis.

2.55-2.9 mm long (mean = 2.72 mm; n = 5); 2.5-2.9 × as long as wide. This species is distinguished by the elytral disc flat; declivity long, gradual; large size; declivital interstriae 2 lacking granules on declivital face; declivital face strongly shagreened, weakly impressed along striae 2 and interstriae 2; declivital strial punctures small, indistinct; posterolateral costa granulate; interstriae densely covered with long erect hair-like setae, setae longer than two interstrial widths; striae setose, setae short, semi-recumbent, as long as strial width.

This species strongly resembles M. chrysophylli and is distinguished by the more strongly sulcate declivity, declivital strial punctures small, indistinct.

Similar species.

Microperus chrysophylli , M. fulvulus .

Distribution.

China* (Guangxi*, Yunnan*), Indonesia (Java, Sumatra), East & West Malaysia, New Guinea, Solomon Islands, Thailand, Vietnam*.

Host plants.

Recorded from five different families of trees, and probably polyphagous ( Beaver et al. 2014).

Figures

Figure 66. Dorsal, lateral and declivital view of Microperus alpha, 1.7 - 1.8 mm (A, B, I), M. chrysophylli paratype, 2.6 - 2.7 mm (C, D, J), M. corporaali, 2.55 - 2.9 mm (E, F, K), and M. cruralis holotype, 3.0 - 3.1 mm (G, H, L).