Bolitoglossa xibalba Campbell, Smith, Streicher, Acevedo & Brodie, 2010
|Species Description: Campbell JA, Smith EN, Streicher J, Acevedo ME, Brodie Jr ED 2010 New salamanders (Caudata: Plethodontidae) from Guatemala, with miscellaneous notes on known species. Misc Publ Mus Zoology Univ Mich 200: 1-66.|
© 2017 Wouter Beukema (1 of 10)
Their webbed feet are wider than most, but less webbed than B. hartwegi, which it is most similar to. Bolitoglossa xibalba also has longer limbs than B. hartwegi. The amount of webbing is similar in B. mexicana, B. rufescens, and B. occidentalis, but B. xibalba is smaller and less brightly patterned than B. mexicana and slightly larger than B. rufescens and B. occidentalis. Bolitoglossa xibalba’s protruding third toe also helps to set them apart, and though B. stuarti also has a protruding third toe, B. xibalba has a smaller snout-vent length. Bolitoglossa xibalba also has less uniform patterning than B. stuarti or B. hartwegi (Campbell et al. 2010).
There is a wide variety of patterns, but B. xibalba tend to have a dark gray or brown dorsum and paler white, pink, or lavender flanks. Their venters are also pale, and often have spots or smudges of darker colors. Black speckled markings are common on the dorsum, and small black or brown dots can usually be found on the flanks as well. They often have dark markings that reach from the snout, past the eye, to the neck, either as a single canthal line, or a more Y-shaped mark (Campbell et al. 2010).
Distribution and Habitat
Life History, Abundance, Activity, and Special Behaviors
Although it is unclear whether this species is nocturnal or diurnal, collected specimens have been observed above the surface during the evening and night. This species does not possess any migration behavior (IUCN 2020).
Bolitoglossa xibalba is presumed to lay eggs in moist environments on terrestrial or arboreal substrates and to undergo direct development (Johnson et al. 2015).
Trends and Threats
Bolitoglossa xibalba is listed as “Endangered” by the IUCN Red List. The species was common in the 1990’s, but has been less abundant in recent years, possibly due to low survey efforts (IUCN 2020). Habitat loss is the major threat to this species, specifically loss of habitat to logging and coffee plantations. Another potential threat is chytrid fungal disease that are tied to the pet trade, and potentially climate change as well (Glime et al. 2017, IUCN 2022, Norris 2007).
Relation to Humans
Possible reasons for amphibian decline
General habitat alteration and loss
Bolitoglossa xilbalba was named for Xibalba, the mythical Mayan underworld. As the species inhabits montane forests at high elevations, the name also pays tribute to those who have perished in said highlands in the Guatemalan civil war, which lasted from 1960 to 1996 (Campbell et al. 2010).
Campbell, J. A., Smith, E. N., Streicher, J., Acevedo, M. E., Brodie, E. D. Jr. (2010). "New salamanders (Caudata: Plethodontidae) from Guatemala, with miscellaneous notes on known species." Miscellaneous Publications Museum of Zoology University of Michigan, 200, 1-66. [link]
Glime, J. M., Boelema, W. J. (2017). "Salamander Mossy Habitats." Brophyte Ecology. Glime, J. M., eds., Michigan Technological University and the International Association of Bryologists, Michigan. [link]
IUCN SSC Amphibian Specialist Group. (2020). "Bolitoglossa xibalba." The IUCN Red List of Threatened Species 2020: e.T194325A2312661. https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T194325A2312661.en. Accessed on 24 February 2022.
Johnson, J.D., Mata-Silva, V., Wilson, L.D. (2015). “A conservation reassessment of the Central American herpetofauna based on the EVS measure.” Amphibian and Reptile Conservation, 9(2), 1-94. [link]
Norris, S. (2007). “Ghosts in our midst: Coming to terms with amphibian extinctions.” BioScience, 57(4), 311–316. [link]
Originally submitted by: Zea Roth-Sisley, Ryan Nguyen, Jenny Park (2022-05-18)
Description by: Zea Roth-Sisley, Ryan Nguyen, Jenny Park (updated 2022-05-18)
Distribution by: Zea Roth-Sisley, Ryan Nguyen, Jenny Park (updated 2022-05-18)
Life history by: Zea Roth-Sisley, Ryan Nguyen, Jenny Park (updated 2022-05-18)
Trends and threats by: Zea Roth-Sisley, Ryan Nguyen, Jenny Park (updated 2022-05-18)
Relation to humans by: Zea Roth-Sisley, Ryan Nguyen, Jenny Park (updated 2022-05-18)
Comments by: Zea Roth-Sisley, Ryan Nguyen, Jenny Park (updated 2022-05-18)
Edited by: Ann T. Chang (2022-05-18)
Species Account Citation: AmphibiaWeb 2022 Bolitoglossa xibalba <https://amphibiaweb.org/species/7571> University of California, Berkeley, CA, USA. Accessed Sep 29, 2023.
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Citation: AmphibiaWeb. 2023. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 29 Sep 2023.
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