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Stripe-tailed Hummingbird Eupherusa eximia

  • Order: Caprimulgiformes
  • Family: Trochilidae
  • Polytypic: 3 subspecies
  • Authors: Marîa del Coro Arizmendi, Claudia I. Rodríguez-Flores, Carlos A. Soberanes-González, and Thomas S. Schulenberg
Sections

Systematics

Geographic Variation

Three subspecies currently recognized:

nelsoni, described as Eupherusa eximia nelsoni Ridgway 1910; type locality Motzorongo, Vera Cruz, Mexico

Occurs in southern Mexico in Veracruz and Oaxaca.

Similar to nominate eximia, but "larger, especially the bill; adult male with green of under parts more yellowish green, and black tip to inner web of two lateral rectrices (on each side) with line of demarcation against white of basal portion decidedly oblique and much less sharply defined" (Ridgway 1911: 396).

eximia, described as Ornismya eximia (DeLattre 1843); type locality Cobán, Guatemala

Occurs from southern Mexico (Chiapas) south to Nicaragua.

See Detailed Description.

egregia, described as Eupherusa egregia Sclater and Salvin 1868; type locality Castello and Calovevora, Panama

Occurs in Costa Rica and Panama.

Similar to nominate eximia, but "larger; adult male with outer webs of two outer rectrices (on each side) white (except terminally), edged with dusky; adult female with outermost rectrix wholly white, or with merely a dusky edging for terminal portion of outer web" (Ridgway 1911: 396).

Related Species

Some authors (e.g. Peters 1945, Eisenmann 1955) classified Eupherusa poliocerca (White-tailed Hummingbird) as a subspecies of Eupherusa eximia.

Phylogenetic analysis of DNA sequence data reveals that hummingbirds (Trochilidae) constitute nine major clades, comprising the hermits, mangos, Patagona, topazes, coquettes, brilliants, mountain-gems, bees, and emeralds (McGuire et al. 2007, 2009). Eupherusa is a member of the emerald clade; other genera in this radiation include Chlorostilbon, Klais, Orthorhynchus, Campylopterus, Chalybura, Thalurania, Elvira, Microchera, Aphantochroa, Taphrospilus, Amazilia, Chrysuronia, Hylocharis, Lepidopyga, and Damophila (McGuire et al. 2007, 2009). Within the emerald clade, Eupherusa is sister to Elvira and to Microchera (McGuire et al. 2007, 2009). Interestingly, the outer rectrices are mostly white in all three of these genera.

Recommended Citation

Arizmendi, M. d. C., C. I. Rodríguez-Flores, C. A. Soberanes-González, and T. S. Schulenberg (2013). Stripe-tailed Hummingbird (Eupherusa eximia), version 1.0. In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/nb.stthum1.01