Recent studies in the Larentiinae revealed two new occurrences for North America, one apparently indigenous and the other introduced. A third species discussed below has stood in the American lists for over fifty years on the basis of a misdetermination, and should be removed.

Lygris populata L.

The early literature contains many references to this species in North America but it is almost certain that all such records can be attributed to the superficially similar Nearctic species, Lygris propulsata Wlk. During current investigations in the genus Dysstroma, I encountered Alaskan specimens that proved to be genuine Lygris populata. These specimens, in the collections of three different museums where they were misdetermined as, or mixed in with, material of Dysstroma glacialis Hlst., are as follows: