Proposal (#55) to South American Classification
Committee
Recognize (restore)
monotypic genus Chlorestes for Chlorostilbon notatus
PROPOSAL: To continue to recognize the genus Chlorestes
rather than subsuming it into Chlorostilbon, as suggested in HBW.
Universally recognized by previous authors including Hellmayr and Zimmer, Chlorestes
was lumped by Schuchmann (1999) citing unspecified "morphological and
acoustic" characters. Chlorestes differs from all forms of Chlorostilbon
in its rounded rather than forked tail; females lack the distinctive facial
pattern of all Chlorostilbon (including russatus, contra Hilty
& Brown 1986) of a white postocular stripe over dusky auriculars and have
the underparts basically dull green, scaled or mottled with greyish instead of
basically grey with variable green speckling laterally (heaviest in C. m.
napensis). No Chlorostilbon has a more-or-less distinct blue throat
patch, although this is not wholly consistent in Chlorestes, according
to Zimmer. When blue is present on the underparts in Chlorostilbon, it
is most intense on the breast, or over the entire breast and throat, not
limited to the throat. These differences are not especially great, but they do
separate C. notatus from all species of Chlorostilbon clearly.
Until substantive evidence is published to the contrary (and in particular, a
genetic analysis would be illuminating), I recommend continuing to recognize Chlorestes.
Gary Stiles, August
2003
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Comments from Remsen: I vote YES on this
proposal, for reasons Gary outlines here. The published evidence is insufficient
to determine whether Chlorestes is even the sister genus to Chlorostilbon.
Comments from Silva: "Yes. I agree
with Gary's comments."
Comments from Nores: "[YES] Si estoy
de acuerdo de reconocer el género Chlorestes. Las razones dadas por Stiles
son convincentes, aunque con hummingbirds la cosa no es tan sencilla debido a
la variabilidad dentro de los géneros y a su vez la semejanza entre
géneros."