Eucolaspis is a genus of leaf beetles in the subfamily Eumolpinae.

It is native to New Zealand, where it is a serious pest of apple trees and other fruit crops.

[3] Fifteen species were described from New Zealand by Fabricius (1781), White (1846) and Broun (1880, 1893, 1909).

[3] However, in 2019, Spanish entomologist Jesús Gómez-Zurita analysed the diversity and distribution of the genus, and his observations generally agreed with the conclusions of Shaw's 1957 revision, identifying at least five species of Eucolaspis in New Zealand.

In addition, he described a new species, Eucolaspis kotatou, from Te Paki, near Cape Reinga.