Dorymolpus is a genus of leaf beetles in the subfamily Spilopyrinae. It contains only one species, Dorymolpus elizabethae. It is found only in Chile, in the Valdivian temperate rain forest of the Valdivia and Chiloe provinces.
The generic name is derived from the Greek Dory "spear" and molpus, short for "Eumolpinae". The species is dedicated to Dr. Elizabeth arias, an entomologist at the University of California, Berkeley, who collected specimens of the species.
Adults and larvae were found on trees in the genus Nothofagus.