Gonaepa heliarcha is a moth in the family Gelechiidae. It was described by Edward Meyrick in 1886. It is found on New Guinea.[1]
The wingspan is about 13 mm. The forewings are bright orange, with purplish black markings and a large basal patch, extending on the costa to two-thirds and on the inner margin to two-fifths, the outer edge is irregular, tolerably straight, with a small transverse spot in the middle of the disc. There is a hind marginal patch, bounded by a sinuate line from four-fifths of the costa to the anal angle. The hindwings are bright orange, with purplish-black markings. There is a short line along the costa beyond the middle, a crescentic inwards-curved spot in the disc beyond the middle and a narrow hind marginal band, somewhat dilated at the apex, with a small irregular prominence at three-fourths.[2]