Accurate Classification of the Species Formerly Combined in Teuchophanes Meyrick with the Description of New Species of Helcystogramma Zeller and Dichomeris Hübner (Lepidoptera: Gelechiidae: Dichomeridinae)

I provide the correct generic combinations for the four species that at one time were combined with Teuchophanes Meyrick, now considered to be a junior subjective synonym of Helcystogramma Zeller: Teuchophanes leucopleura Meyrick, Dichomeris luminosa Busck, Dichomeris perceptella Busck, and Dichomeris cornuta Busck. I remove Teuchophanes leucopleura Meyrick revised status from synonomy with Dichomeris luminosa Busck. All species are accurately placed in Helcystogramma except Dichomeris cornuta Busck revised status, which should be moved back to Dichomeris Hübner. I provide a brief review of the history of the specimens involved with the classification and interpretation of the Teuchophanes combinations including designating lectotypes for D. luminosa Busck and D. cornuta Busck. During the course of reviewing similar specimens, I discovered three species: H. robinsoni new species, H. salonenae new species, and D. adamskii new species. I provide illustrations and detailed descriptions to differentiate the species, along with a key to the included species of Helcystogramma. I include new records for the named species and biology where known for the new species including a number of host plant records.