Western yellow bat

The western yellow bat (Dasypterus xanthinus) is a species of vesper bat found in Mexico and the southwestern United States. This species roosts in trees such as Populus fremontii, Platanus wrightii, and Quercus arizonica.[2] If available, the western yellow bat will use the dead fronds that encircle palm trees as a roosting site.[3]

This article is about the bat species found in North America. For the species with the same name found in Madagascar, see Malagasy yellow bat.

Western yellow bat
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Vespertilionidae
Genus: Dasypterus
Species:
D. xanthinus
Binomial name
Dasypterus xanthinus
Thomas, 1897
Geographic range of the western yellow bat
Synonyms
  • Dasypterus ega xanthinus Thomas, 1897
  • Lasiurus xanthinus Thomas, 1897

Taxonomy and etymology

It was described as a new subspecies of bat in 1897 by British zoologist Oldfield Thomas. He listed it as a subspecies of the southern yellow bat, with a trinomen of Dasypterus ega xanthinus.[4] In 2015, Baird et al. argued that this species and other yellow bats should be in the genus Dasypterus,[5] though others have since argued that Dasypterus should remain a subgenus of Lasiurus.[6] In 1988, Baker et al. argued that it should be considered a full species based on its genetics.[7] In a 2017 follow-up to their 2015 study, Baird et al. again expressed that Aeorestes, Dasypterus, and Lasiurus should be separate genera comprising the tribe Lasiurini. They stated that the genetic distance of the three genera was much greater than observed between other bat genera, on average. In contrast to the average of 12.0% inter-generic divergence reported from another study on bats, Aeorestes and Dasypterus varied 18.79%; Aeorestes and Lasiurus varied 19.05%; and Dasypterus and Lasiurus varied 19.79%.[8] Its species name "xanthinus" is from Ancient Greek xanthos, meaning "pertaining to yellow."[9]

Description
The cranial anatomy of the western yellow bat.

The western yellow bat is a small species, though it is larger than the southern yellow bat. Its fur is bright yellow. Individuals weigh approximately 16 g (0.56 oz). Its forearm length is 42–47 mm (1.7–1.9 in). Its dental formula is 1.1.2.33.1.2.3 for a total of 32 teeth.[10]

Range and habitat

Its range includes the Southwestern United States of Arizona, California, and New Mexico, in addition to parts of Mexico. It is found in West and Central Mexico, as well as Baja California.[1]

Conservation

As of 2017, it is evaluated as a least-concern species by the IUCN.[1]

References
  1. Arroyo-Cabrales, J.; Álvarez-Castañeda, S.T. (2017). "Lasiurus xanthinus". IUCN Red List of Threatened Species. 2017: e.T41532A22004260. doi:10.2305/IUCN.UK.2017-2.RLTS.T41532A22004260.en. Retrieved 19 June 2022.
  2. "Lasiurus xanthinus - Western Yellow Bat". InfoNatura. NatureServe. Retrieved 2009-07-04.
  3. Hoffmeister, Donald F. (1986). Mammals of Arizona. Arizona Game and Fish Department. pp. 100–101. ISBN 978-0-8165-0873-0.
  4. Thomas, O. (1901). "LXVI.—Descriptions of new bats and rodents from America". The Annals and Magazine of Natural History; Zoology, Botany, and Geology. 6. 20 (120): 544. doi:10.1080/00222939709487398.
  5. Baird, Amy B; Braun, Janet K; Mares, Michael A; Morales, Juan Carlos; Patton, John C; Tran, Christina Q; Bickham, John W (2015). "Molecular systematic revision of tree bats (Lasiurini): Doubling the native mammals of the Hawaiian Islands". Journal of Mammalogy. 96 (6): 1255–1274. doi:10.1093/jmammal/gyv135.
  6. Novaes, Roberto Leonan M; Garbino, Guilherme S. T; Cláudio, Vinícius C; Moratelli, Ricardo (2018). "Separation of monophyletic groups into distinct genera should consider phenotypic discontinuities: The case of Lasiurini (Chiroptera: Vespertilionidae)". Zootaxa. 4379 (3): 439–440. doi:10.11646/zootaxa.4379.3.8. PMID 29689956.
  7. Baker, R. J.; Patton, J. C.; Genoways, H. H.; Bickham, J. W. (1988). "Genic studies of Lasiurus (Chiroptera: Vespertilionidae)". Occasional Papers, the Museum, Texas Tech University (117).
  8. Baird, Amy B.; Braun, Janet K.; Engstrom, Mark D.; Holbert, Ashlyn C.; Huerta, Maritza G.; Lim, Burton K.; Mares, Michael A.; Patton, John C.; Bickham, John W. (2017). "Nuclear and mtDNA phylogenetic analyses clarify the evolutionary history of two species of native Hawaiian bats and the taxonomy of Lasiurini (Mammalia: Chiroptera)". PLOS ONE. 12 (10): e0186085. Bibcode:2017PLoSO..1286085B. doi:10.1371/journal.pone.0186085. PMC 5636129. PMID 29020097.
  9. Stangl, F. B.; Christiansen, P. G.; Galbraith, E. J. (1993). "Abbreviated guide to pronunciation and etymology of scientific names for North American land mammals north of Mexico" (PDF). Occasional Papers, the Museum, Texas Tech University (154): 1–28.
  10. Aguilar, S.; Leon P., Livia; Morales, J.C. (2014). Ceballos, G. (ed.). Mammals of Mexico. JHU Press. pp. 822–824. ISBN 978-1421408439.
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