Hyloxalus elachyhistus

Hyloxalus elachyhistus is a species of frog in the family Dendrobatidae. It is found in southern Ecuador (both versants of the Andes) and northern Peru, in the Huancabamba Depression and south to Cajabamba Province.[2][3]

Hyloxalus elachyhistus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Dendrobatidae
Genus: Hyloxalus
Species:
H. elachyhistus
Binomial name
Hyloxalus elachyhistus
(Edwards, 1971)
Synonyms

Colostethus elachyhistus Edwards, 1971

Description

Hyloxalus elachyhistus shows considerable intraspecies variability, and it might represent more than one species.[4][5] Ecuadorian males measure 18–24 mm (0.71–0.94 in) and females 21.5–28 mm (0.85–1.10 in) in snout–vent length.[4] Peruvian specimens are smaller: males measure 17–20 mm (0.67–0.79 in) and females 19–23 mm (0.75–0.91 in) SVL.[5] Dorsum varies in colour between populations, from pale olive to brown. There is a pale yellow to tan oblique lateral stripe, usually narrowly bordered by dark brown or black.[5]

Males may protect the egg clutch.[4] Both males and females may transport the tadpoles. Back-riding tadpoles vary in size, from about 10 to 17 mm (0.39 to 0.67 in) in total length. Largest free-swimming tadpoles are 38 mm (1.5 in) in total length.[5]

Habitat and conservation

Its natural habitats are dry and humid lowland and premontane forests. It occurs near streams, especially in dry forests. It is threatened by habitat loss. Declines at high elevations have taken place even in suitable habitat and could be due to chytridiomycosis.[1]

References
  1. IUCN SSC Amphibian Specialist Group (2019). "Hyloxalus elachyhistus". The IUCN Red List of Threatened Species. IUCN. 2019: e.T55075A3023687.
  2. Frost, Darrel R. (2014). "Hyloxalus elachyhistus (Edwards, 1971)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 24 March 2015.
  3. Coloma, LA; Ortiz, DA & Frenkel, C. (2013). "Hyloxalus elachyhistus". Ron, S. R., Guayasamin, J. M., Yanez-Muñoz, M. H., Merino-Viteri, A., Ortiz, D. A. y Nicolalde, D. A. 2014. AmphibiaWebEcuador. Version 2014.0. Museo de Zoología, Pontificia Universidad Católica del Ecuador (QCAZ). Retrieved 25 March 2015.
  4. Coloma, L. A. (1995). "Ecuadorian frogs of the genus Colostethus (Anura: Dendrobatidae)". Miscellaneous Publication, Museum of Natural History, University of Kansas. 87: 1–72.
  5. Duellman, W. E. (2004). "Frogs of the genus Colostethus (Anura: Dendrobatidae) in the Andes of northern Peru". Scientific Papers. Natural History Museum, University of Kansas. 35: 1–49. doi:10.5962/bhl.title.8467.
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