Demotispa pulchella is a species of beetle of the family Chrysomelidae. It is found in Brazil (Amazonas) and Peru.
Adults reach a length of about 3.5-4.2 mm. The have a black head. The pronotal disc is dark brown to black, while the margin of the pronotum is yellowish-brown. The scutellum is yellowish-brown, as is most of the elytral disc. The antennae are brown to black.
No host plant has been documented for this species.