Bark and Ambrosia Beetles of the World

Xyleborus intrusus is found from British Columbia to Gautemala, but is isolated from eastern populations of the same species by a large area in central Canada and the Lake states of the U.S. This species is very similar to X. pubescens Zimmermann from eastern North America, differing in minute differences in the denticles of the elytral declivity. Bright (2019:298) formally proposed the synonymy but this may be premature. In the meantime I believe that all records and names from eastern North America should be treated as pubescens.

Listed in Wood & Bright (1992) but not in Wood (1982). Type Guatemala.

This species were removed from synonymy with X. ferrugineus by Rabaglia (2006). Some records of identified here from eastern North America as Xyleborus ferrugineus (identifications made prior to 2005) probably refer to this species.