Bolton's Technomyrmex revision is now available from The American Entomological Institute.
Taxonomy of the dolichoderine ant genus Technomyrmex Mayr (Hymenoptera: Formicidae) based on the worker cast. Barry Bolton. 2007. 150 pp. Contributions of the American Entomological Institute Volume 35, No. 1. $30.00
Thanks to the anonymous commenter who pointed it out.