Protonym: Elainia vilissima Ibis p.122 pl.4 fig.1
Category: Passeriformes / Tyrannidae / Zimmerius
Taxonomy Code: paltyr2
Type Locality: Central America; two specimens from Coban, Guatemala, claimed as ''type'' by Sclater, 1888, Cat. Birds Brit. Mus., 14, p. 132.
Author: Sclater & Salvin
Publish Year: 1859
IUCN Status: Least Concern
(Tyrannidae; Ϯ Golden-faced Tyrannulet Z. chrysops) Dr John Todd Zimmer (1889-1957) US ornithologist, taxonomist; "Despite the superficial similarity, I believe the group of Tyranniscus species with the unique wing pattern, syrinx and aberrant nasal septum, should be separated generically from the typical group of species. Surprisingly, there is no name available, so I propose: Zimmerius gen. nov., type Tyrannulus chrysops Sclater, 1858. Diagnosis. Superficially most like Tyranniscus Cabanis and Heine, 1859, but differs as follows: has a unique wing pattern in which the median and greater coverts, the secondaries and four or five subexternal primaries are edged with yellow, while the outermost and four or five internal primaries are blackish, producing a black wedge when the wing is spread; tail proportionately longer, greater than 80 per cent of wing length instead of less than 80 per cent, and bill proportionately longer, greater than 18 per cent of wing length: tarsus basically exaspidean with a few scutes on the proximal half of the plantar surface, compared to taxaspidean/pycnaspidean in Tyranniscus; syrinx unlike any other in the Elaeniiinae, lacking intrinsic muscles ... The species included in Zimmerius, all formerly in Tyranniscus, are bolivianus, vilissimus, cinereicapillus, gracilipes and viridiflavus (including chrysops). The genus is named for the late John Todd Zimmer in belated recognition of his enormous contributions to the systematics of Neotropical birds and his recognition of the unique wing pattern in this new genus." (Traylor 1977); "Zimmerius Traylor, 1977, Bull. Mus. Comp. Zool., 148, p. 147. Type, by original designation, Tyrannulus chrysops Sclater." (Traylor in Peters, 1979, VIII, p. 8).
vilissima / vilissimus
L. vilissimus worthless < super. vilis cheap, worth little.
UPPERCASE: current genus
Uppercase first letter: generic synonym
● and ● See: generic homonyms
lowercase: species and subspecies
●: early names, variants, mispellings
†: type species
Gr.: ancient Greek
<: derived from
syn: synonym of
/: separates historical and modern geographic names
ex: based on
TL: type locality
OD: original diagnosis (genus) or original description (species)