He did not address the species described by Hans Georg Amsel from respectively Malta and Iraq a few decades earlier.

[1] In 2011 it was classified as one of two genera in the family Pterolonchidae in the superfamily Gelechioidea by van Nieukerken et al..[3] In 2014 a cladistics analysis performed by Heikkilä et al.. expanded the family to seven genera.

[1] P. inspersa caterpillars feed on Centaurea species, a herbaceous, thistle-like plant.

In spring, a silken tube is made above the soil surface in which pupation takes place.

[7] P. inspersa was released as a biological control agent for knapweed, Centaurea diffusa, in Colorado, Montana, and Oregon in the mid to late 1980s, although there was no known establishment of the species in the United States initially, it has since spread to Idaho and British Columbia.