North American species of Trichopsenius currently cannot be confidently identified. Reasons being the biased use of sexual characters of females and the unknown degree of unidentified species diversity. All species, including those in the Old World, are symbionts with Reticulitermes. A closely related genus, Xenistusa may be found sympatrically within a single termite nest. Local, and unless you know of a reliable site, difficult to collect.
Microdonia nitidiventris Brues, 1904
Zyras obliqqus Casey, 1893
Zyras rudis LeConte, 1866
Here is the holotype image from Harvard's MCZ Type Database.