Microperus recidens (Sampson, 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 recidens (Sampson, 1923) Fig. 69G, H, L

Xyleborus recidens Sampson, 1923: 287.

Coptodryas recidens (Sampson): Wood 1989: 171.

Microperus recidens (Sampson): Beaver et al. 2014: 56.

Xyleborus minusculus Eggers, 1923: 212. Synonymy: Eggers 1925: 154.

Xyleborus minutissimus Eggers, 1930: 204. Synonymy: Wood 1989: 171.

Xyleborus crassitarsus Schedl, 1936d: 28. Synonymy: Browne 1955: 364.

Xyleborus artegraphus Schedl, 1942c: 44. Synonymy: Hulcr and Cognato 2013: 111.

Xyleborus extensus Schedl, 1955a: 301. Synonymy: Hulcr and Cognato 2013: 111.

Xyleborus tuberculosus Browne, 1981b: 602. Synonymy: Beaver 1995a: 198.

Type material.

Lectotype Xyleborus minusculus (NMNH). Syntypes Xyleborus recidens (NHMUK). Holotype, paratype Xyleborus tuberculosus (NHMUK).

New records.

China: Jiangxi, Xunwu, Xingshan, 6.ix.2018, Y. Li, ex Fagaceae log (UFFE, 1). S Yunnan, Xishuangbanna, 23 km NW Jinghong, vic. Na Ban village (NNNR), 22°10'N, 100°39'E, 700-1000 m, v-vii. 2009, L. Meng (RABC, 1). Vietnam: Dong Nai, Cat Tien N.P., 11.42232, 107.42834, 128 m, 19.ii.2017, VN74, A.I. Cognato, T.A. Hoang, ex porch light (MSUC, 1).

Diagnosis.

1.9-2.0 mm long (mean = 1.97 mm; n = 5); 2.71-2.86 × as long as wide. This species is distinguished by the elytral disc flat with short, steep declivity; posterolateral margin of elytra carinate; declivity with sparse minor denticles, much less abundant than strial punctures; and a pair of slightly larger denticles on interstriae 3.

Similar species.

Microperus alpha .

Distribution.

Bangladesh, ‘Borneo’, Brunei, China* (Jiangxi, Yunnan), India (Andaman Is, West Bengal), Indonesia (Engano I., Java, Maluku), East & West Malaysia, Myanmar, New Guinea, Philippines, Thailand, Vietnam*.

Host plants.

Polyphagous ( Beeson 1961).

Figures

Figure 69. Dorsal, lateral and declivital view of Microperus perparvus, 1.5 - 1.9 mm (A, B, I), M. pometianus, 1.2 - 1.7 mm (C, D, J), M. quercicola, 1.8 - 2.0 mm (E, F, K), and M. recidens, 1.9 - 2.0 mm (G, H, L).