Description
Illustration showing Heterorhynchus hanapepe Which is now a synonym of the KAUA'I NUKUPU'U (Hemignathus lucidus hanapepe) From Avifauna of Laysan By Lionel Walter Rothschild, 2nd Baron Rothschild (1868–1937) By John Gerrard Keulemans (1842-1912) (Dutch bird illustrator), which was issued from 1893-1900.
Date 1893-1900
Source http://www.sil.si.edu/digitalcollections/nhrarebooks/rothschild/cf/description-search-results-all.cfm
Author John Gerrard Keulemans (1842–1912)
Source: https://commons.wikimedia.org/wiki/File:Hemignathus_lucidus_hanapepe.jpg

The Kauaʻi nukupuʻu (Hemignathus hanapepe) is a species of nukupu'u once found throughout parts of the Hawaiian island of Kauaʻi. It is an insect eater that picks out its tiny prey from tree bark. The males are yellowish with brown wings, while the females are grayish brown with a yellow throat streak. Order: Passeriformes, Family: Fringillidae, Subfamily: Carduelinae, Species: Hemignathus hanapepe (S. B. Wilson, 1889), Synonyms: Hemignathus lucidus hanapepe.