Ips borealis borealis
Ips borealis thomasi
Ips borealis swainei
Ips bonanseai
Ips avulsus
Ips apache
For the present the treatment of this species follows Lanier et. al (1991) and treats all Central Mexican and Central American records as I. apache Lanier, even though no attempt has been made to identify specimens based on the characters given in that publication.
Read More