Beltheca phosphoropa is a moth of the family Gelechiidae. It was described by Edward Meyrick in 1922. It is found in Peru and Pará, Brazil.[1]
The wingspan is 7–9 mm. The forewings are glossy dark grey, on the posterior half dark fuscous and with an oblique iridescent violet-metallic strigula from the costa at three-fifths and similar bright iridescent violet-metallic scattered scales in the disc posteriorly, as well as a dot on the dorsum before the tornus. The hindwings are dark fuscous, in males with a slender expansible dark grey hair-pencil from the costa near the base, and a large dense pencil of blackish hairscales from the base lying along the dorsum.[2]