Helcystogramma thesmiopa is a moth in the Gelechiidae family. It was described by Meyrick in 1922. It is found in Brazil (Para). The wingspan is about 12 mm. The forewings are violet-grey with a transverse-oval blackish blotch, finely edged with white, resting on the middle of the dorsum and reaching three-fourth across the wing, the anterior edge prominent in the middle, and with the lower part of the blotch occupied (except for the margins) by a light grey irregular spot. There is a large black finely white-edged dot in disc at three-fifth and a fine slightly curved line of whitish irroration from a wedge-shaped white mark on the costa at four-fifth to the dorsum before the tornus. There is a marginal series of white dots edged with blackish terminally around the posterior part of the co