Picus insularis Gould, 1863 = Dendrocopos leucotos insularis. Taiwan.
Date between 1850 and 1883
Source John Gould, 1804-1881; Richard Bowdler Sharpe, 1847-1909: Birds of Asia., Volume 6, London,
Author John Gould (1804–1881) & Henry Constantine Richter (1821–1902)
Source: https://commons.wikimedia.org/wiki/File%3AAnnotationes_zoologicae_japonenses_-_Nihon_d%FF%FFbutsugaku_ih%FF%FF_%281903%29_%2818235133258%29.jpg

The white-backed woodpecker (Dendrocopos leucotos) is a Eurasian woodpecker belonging to the genus Dendrocopos in the family Picidae. Dendrocopos leucotos is the largest of the spotted woodpeckers in the western Palearctic. It occurs in central and northern Europe, in the Balkans and Turkey, and in the region eastwards as far as Korea and Japan. It is a scarce bird, requiring large tracts of mature deciduous forests with high amounts of standing and laying dead wood.

Dendrocopos leucotos insularis (Ogawa, 1905) occurs in Taiwan.

Order: Piciformes
Family: Picidae
Genus: Dendrocopos
Species: Dendrocopos leucotos (Bechstein, 1802)