Hylodes amnicola Pombal, Feio & Haddad 2002

Hylodes amnicola is a member of the Hylodes lateristrigatus group (sensu Heyer 1982) . Dorsum pale brown to dark gray with interocular bar and dorsal blotches with variable shapes and contrast, sometimes not visible. One to three transverse bars on the thigh of variable widths. Coccygeal region blackish to gray and venter cream colored to white, also white with cream colored dots. More than one gray bar may be present on thigh. Usually a gray triangular blotch on head with its apex touching the interorbital bar. Head is longer than wide, males 25.3-28.1 mm SVL. Canthus rostralis distinct, slightly straight, loreal region concave. Tympanum visible beneath the skin, with a diameter half that of eye. Weak supratympanic fold present. Lateral fold extends from supratympanic fold to groin. Vocal sacs laterally placed. Relative lengths of fingers 2

Known only from the type locality at the Parque Estadual do Ibitipoca near 1400 m altitude. The habitat at this locality was that of rocky mountain fields called "campo rupestre" with small bushes and grasses on a sandy soil and quartzite. Rich acides from the soil give the water a dark color; rocky bottom present in streams.

Pombal, Jr. et al. (2002) provide the following information on vocalization (at 18 celcius): advertisement calls given sporadically, call duration is 2.82-3.75 sec, 48-65 notes/call, rate of 16.96-18.63/sec, notes given at intervals of .026-.040 sec (final interval may be of approximately .05 sec), note duration is .015-.034 sec. Each note is a rising frequency-modulated whistle with a dominant frequency range of 5.1-6.2 kHz. Territorial calls have 6-8 notes, formed by 6-8 whistles or 5-7 whistles plus a squeaky note. Calls of just whistles had durations ranging .45-.74 sec. Calls with whistles and squeaky notes had a duration of .74-.92 sec. Whistle notes of territorial calls ranged from .02-.04 sec. Squaky notes had a range from .22-.25. Males were seen calling throughout the year during the day including dusk, calling from the ground, along rocks, edges of rivulents, inside forests, and open areas.

Hylodes amnicola is a species of frogs in the family Hylodidae.

It is endemic to Brazil. Its natural habitats are subtropical or tropical moist lowland forest and rivers.