Type Specimens Of Birds In The American Museum Of Natural History Part 11. Passeriformes: Parulidae, Drepanididae, Vireonidae, Icteridae, Fringillinae, Carduelinae, Estrildidae, And Viduinae Author LeCroy, Mary text Bulletin of the American Museum of Natural History 2013 2013-09-26 2013 381 1 155 http://www.bioone.org/doi/abs/10.1206/832.1 journal article 7647 10.1206/832.1 85bd2c66-f9f0-4172-8d82-2e8841cd354a 0003-0090 4611863 Spinus obscurus C.L. Brehm Spinus obscurus C.L. Brehm, 1855: 108 (Aeusserst selten in Deutschland ). Now considered an aberrant specimen of Carduelis spinus (Linnaeus, 1758) . See Hartert 1903: 71 ; and Hartert, 1918: 10 . HOLOTYPE : AMNH 456881 , female, collected in the Thüringer Wald , Germany , on 6 April 1819 . From the Brehm Collection via the Rothschild Collection. COMMENTS: Brehm described only the female and said that it was very rare in Germany . He probably had a single specimen, which is apparently lacking all yellow pigment in the plumage.