Lophocampa brunnea was described from Guatemala and was associated with Lophocampa propinqua in a catalogue published in 1986 however it is totally different.
Lophocampa caryae form montana was described from Guatemala. In the catalogue of Allan Watson and David T. Goodger, published in 1986, this form was associated with Lophocampa propinqua. However, the habitus of montana is totally different from Lophocampa caryae, Lophocampa propinqua and in fact all Lophocampa species. 
