Xyleborus limatus Schedl, 1936 h
Euwallacea limatus (Schedl): Wood and Bright, 1992 Xyleborus subemarginatus Eggers, 1940 syn. n.
Euwallacea subemarginatus (Eggers): Beaver, 1998 syn. n. Xyleborus subparallelus Eggers, 1940 syn. n.
Euwallacea subparallelus (Eggers): Wood and Bright, 1992 syn. n.
Specimens examined. P. limatus: Philippines, Luzon, Mt. Makiling (holotype, NHMW, plus 1 other individual); Malaysia, Sabah, Danum Valley (52,Hulcr det., MSUC); New Guinea, Madang Prov. (1, Hulcr det., MSUC). E. subemarginatus: Java, Batoerraden (Lectotype, USNM); Indonesia, Java, Batoerraden (3 paratypes, NHMW); Indonesia, Java, Bandjar (2, Hulcr det., NHMW). E. subparallelus: Indonesia, Java, Batoerrad (lectotype and 1 non-type, USNM); Malaysia, Sarawak, Mt. Dulit (1, Hulcr det., NHMW).
Comments. P. limatus was placed in Planiculus in both morphological and molecular phylogenies (100 % posterior probability, Cognato et al., 2011). It is similar to P. b i c o l o r (sharing small tubercles on interstriae 1 and 3), but its declivital apex is emarginate. Lectotype of E. subemarginatus differs from P. limatus by its smaller granules on declivital surface, larger granules on the end of interstriae 1, and less prominent posterolateral declivital costa. These features are extremely variable in Planiculus, also vary among the lectotype and paratypes of E. subemarginatus. Types of E. subemarginatus and E. subparallelus are virtually identical.