Xyleborus perbrevis Schedl, 1951: 59. Synonymy: Wood 1989.
Xyleborus schultzei Schedl, 1951: 68. Synonymy: Beaver 1991; Wood, 1989: 173.
Xyleborus tapatapaoensis Schedl, 1951: 152. Synonymy: Wood 1989.
The syntypes of E. fornicatus from the Hamburg Museum collected in Sri Lanka were lost during World War II (Wood and Bright 1992). Based on the origin of the missing holotype, we refer to the TSHBa clade as E. fornicatus (Eichhoff 1868). Specimens within this clade have elytral length of 1.45–1.57 mm and a pronotum length of 1.05–1.11 mm, with 7 to 10 socketed denticles on the edge of protibia. Pronotum width in this clade is 1.04–1.1 mm and elytra width is 0.5–0.54 mm. Distribution: Asia (American Samoa, China, Indonesia, Papua New Guinea, Samoa, Sri Lanka, Taiwan, Thailand), Australia, and introduced in United States (Florida and Hawaii).