Microperus chrysophylli (Eggers, 1930)

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 chrysophylli (Eggers, 1930) Fig. 66C, D, J

Xyleborus chrysophylli Eggers, 1930: 205.

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

Microperus chrysophylli (Eggers): Saha and Maiti 1996: 824.

Type material.

Holotype (FRI), paratype (NMNH, 1).

New records.

China: Yunnan, Xishuangbanna, Jinghong City, Jinghong Farm, 21.785N, 100.790E, 677 m, 18.vii.2018, Lai, S-C, Zhang, L., ex Hevea brasiliensis (RABC, 1).

Diagnosis.

2.6-2.7 mm long (mean = 2.68 mm; n = 5); 2.6-2.7 × 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; and striae setose, setae short, semi-recumbent, as long as strial width.

This species strongly resembles M. corporaali and is distinguished by the less strongly sulcate declivity, declivital strial punctures very large, distinct.

Similar species.

Microperus corporaali , M. fulvulus .

Distribution.

Bangladesh, China* (Yunnan), India (West Bengal).

Host plants.

Recorded from Cinnamomum ( Lauraceae ), Chrysophyllum ( Sapotaceae ), ( Maiti and Saha 2004), and Hevea brasiliensis ( Euphorbiaceae ).

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).