Microperus sagmatus Smith, Beaver & Cognato 2020 (in Smith et al. 2020b): 300.
1.75−1.95 mm long (mean = 1.83 mm; n = 5); 2.69−2.79 times as long as wide. This species is distinguished by the elytral disc shallowly transversely impressed with a saddle-like depression; elytral interstriae costate with strong interstrial spines posterior to the saddle; and elytral declivity steep, slightly flattened.
It closely resembles M. undulatus but is distinguished by the discal impression deeper, antero-posteriorly narrower, with steeper anterior and posterior slopes, strial punctures on impression with rounded granules, interstrial spines on disc behind saddle stronger, and backwardly hooked, not pointing dorsally.
Microperus cruralis, M. nugax, and M. undulatus
West Malaysia, Thailand
recorded from Durio zibethinus (durian) (Malvaceae), and an undetermined tree, ‘krachid’ (Smith et al. 2020b)
The specimens from Thailand were included under M. undulatus (Sampson) by Beaver et al. (2014).
Sequences available for COI and CAD.