Arixyleborus phiaoacensis Smith, Beaver & Cognato 2020 (in Smith et al. 2020b): 124.
2.2 mm long (n = 1); 2.75 times as long as wide. This species is distinguished by its moderate size; protibia posterior face inflated and granulate; antennal club as broad as tall; pronotum lateral margin oblique; pronotum anterior margin without serrations; and posterolateral carina acute, granulate.
Arixyleborus crassior, A. mediosectus, and A. silvanus
unknown (Smith et al. 2020b)
specimens not available for sequencing