improbus, Taxa Only, Exact Match: 2 Treatments

Xyleborus improbus			Bright, Donald E., 2014, A Catalog of Scolytidae and Platypodidae (Coleoptera), Supplement 3 (2000 - 2010), with notes on subfamily and tribal reclassifications, Insecta Mundi 2014 (356), pp. 1-336 : 200	200
Anisandrus improbus			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	1