Description
Member of the Hyla pinorum group according to Duellman (1970) . Campbell and Brodie (1992) had previously assigned this species as being Hyla melanomma, now elevated to species level in Campbell and Duellman (2000) . This is a small treefrog with dark brown spots on limbs, body and head. Pale brown in groin areas with cream color and brown spots on the flanks. Snout acuminate when viewed dorsally and the diameter of the tympanum is less than 50% of the diameter of the eye. Head is as wide as body and slightly wider than it is long. Head width is 35.2% SVL, head length is 34.5% SVL. the loreal region (between anterior of eye and posterior of nostril) is slightly concave. Lips thin and not flared. Nostrils are protuberant and directed anterolaterally. Diameter of tympanum is 36.4% diameter of eye. Weak transverse fold on wrist, axillary membrane extending approximately 1/3 of upper arm. Cloacal opening is directed posteroventrally at upper level of thighs. Single, median, subgular vocal sac is present in males. Vocal slits extend from the midlateral base of the tongue to the angle of the jaws.

In life, the dorsum is a dull bronze-brown with black flecks on body and dark brown to black irregular marks on limbs. Brownish black canthal (corner of eye), sypratympanic, and lateral stripes. Venter is cream colored and the iris is a pale copper with black flecks.

Tadpoles of this species are unknown.

Distribution and Habitat

Country distribution from AmphibiaWeb's database: Mexico

View distribution map in BerkeleyMapper.

Only known from the vicinity of its type locality along the Rio Aloapan in the Sierra Mazateca of Oaxaca, Mexico, at an elevation of 405 m in lower montane rainforest (cloud forests).

Life History, Abundance, Activity, and Special Behaviors
The three males which have been collected were found while the general weather conditions consisted of being overcast, it had not rained in several days.

Possible reasons for amphibian decline

General habitat alteration and loss
Habitat modification from deforestation, or logging related activities

References

Campbell, J. A., and Brodie, E.D., Jr. (1992). ''A new species of treefrog (Hylidae) from the Sierra de los Cuchumatanes of Guatemala.'' Journal of Herpetology, 26, 187-190.

Campbell, J. A., and Duellman, W.E. (2000). ''New species of stream-breeding hylid frogs from the northern versant of the highlands of Oaxaca, Mexico.'' Scientific Papers of the Natural History Museum of the University of Kansas, 16, 1-28.

Duellman, W.E. (1970). The Hylid Frogs of Middle America. Monograph of the Museum of Natural History, University of Kansas.

Species Account Citation: AmphibiaWeb 2004 Exerodonta abdivita <https://amphibiaweb.org/species/6269> University of California, Berkeley, CA, USA. Accessed Dec 23, 2024.

Citation: AmphibiaWeb. 2024. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 23 Dec 2024.

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