wood peckers
picinae

In avian fauna are included several species of herons, teals, doves, cuckoos, bee eaters, wood peckers, larks, shrikes, bulbuls, finches and wagtails are widely dispersed in gardens, cultivated fields, streams and hill slopes.

The true woodpeckers, subfamily Picinae, are distributed across the entire range of the woodpeckers.

However, its similarity seems to be due to convergent evolution, as it does not even seem to belong to the same tribe of Picinae as Celeus does.

Moore, William S.; Weibel, Amy C. & Agius, Andrea (2006): Mitochondrial DNA phylogeny of the woodpecker genus Veniliornis (Picidae, Picinae) and related genera implies convergent evolution of plumage patterns.

While the similar plumage may be due to sheer chance - perhaps as an atavism of plesiomorphic patterns - the facts that such cases are commonplace in the Picinae and that the species involved are usually sympatric suggests that there may well be some as yet undiscovered benefit to either or all of the taxa involved.