A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China Author Smith, Sarah M. Department of Entomology, Michigan State University, 288 Farm Lane, East Lansing, Michigan 48824, USA https://orcid.org/0000-0002-5173-3736 camptocerus@gmail.com Author Beaver, Roger A. 161 / 2 Mu 5, Soi Wat Pranon, T. Donkaew, A. Maerim, Chiangmai 50180, Thailand Author Cognato, Anthony I. Department of Entomology, Michigan State University, 288 Farm Lane, East Lansing, Michigan 48824, USA text ZooKeys 2020 983 1 442 http://dx.doi.org/10.3897/zookeys.983.52630 journal article http://dx.doi.org/10.3897/zookeys.983.52630 1313-2970-983-1 7DED4CE2934C4539945F758930C927F9 C890C7FD4B2D57A8B1A062305ED42D53
Microperus undulatus (Sampson, 1919) Fig. 70C, D, F
Xyleborus undulatus Sampson, 1919: 111.
Coptodryas undulata (Sampson): Wood 1989 : 171.
Microperus undulatus (Sampson): Saha and Maiti 1996 : 827.
Xyleborus leprosulus Schedl, 1936d: 27. Synonymy: Wood 1989 : 171.
Type material.
Holotype Xyleborus undulatus (NHMUK).
Diagnosis.
2.0-2.1 mm long (mean = 2.03 mm; n = 3); 2.5-2.86 x as long as wide. This species is distinguished by the elytral disc shallowly transversely impressed with a saddle-like depression; elytral interstriae flat with moderate interstrial tubercles posterior to the saddle; and declivity steep, slightly flattened.
Microperus undulatus closely resembles M. sagmatus but is distinguished by the discal impression shallower, antero-posteriorly broader, with gentler anterior and posterior slopes, strial punctures on impression without granules, interstrial tubercles on disc behind saddle moderately sized with rounded apices pointing dorsally, not backwardly hooked.
Similar species.
Microperus cruralis , M. nugax , M. sagmatus .
Distribution.
India (West Bengal), Indonesia (Java), West Malaysia, Nepal, Thailand.
Host plants.
Recorded only from two species of Shorea ( Dipterocarpaceae ) ( Beeson 1930 ; Browne 1961b ).