Cycloramphus boraceiensis Heyer 1983

Diagnosis A large species of Cycloramphus (males 35-55 mm, females 52-59 mm snout-vent length) with toes moderately webbed and distinct black and/or white dorsal tubercles; without thumb spines, tubercles are borne on low relief warts;without thigh spots.

Serra do Mar in the southeastern part of the State of Rio de Janeiro and the northern half of the State of São Paulo; the offshore islands of Ilha Grande and São Sebastião, Brazil.

óleo essencial (cineol, pineno, lineol), princípio amargo

Description of holotype Snout weakly semicircular from above, rounded with a flared lip in profile; canthus rostralis indistinct; loreal very slightly concave; tympanum hidden; vomerine teeth in transverse almost contiguous series posterior to and between choanae; elongate vocal slits present; first finger just shorter than second; inner and outer metacarpal tubercles large, ovate, outer with anterior process, inner metacarpal tubercle separated from thumb subarticular tubercle by somewhat less than diameter of subarticular tubercle; thumb lacking asperities; dorsal texture of uniform low warts with shagreen, many warts bearing a single white tubercle; distinct fold from posterior corner of eye to shoulder; inguinal disk ovoid, over 1/2 diameter of eye; venter granular; toe tips slightly swollen; toes webbed; inner metatarsal tubercle elongate, much larger than outer rounded metatarsal tubercle; tarsal and metatarsal folds not visible; posterior tarsus and sole of foot smooth. Measurements (in mm): snout-vent length 51.3, head length 19.6, head width 21.2, eye-nostril distance 3.8, eye-eye distance 9.7, femur 22.3, tibia 22.9, foot 23.5mm. Coloration: Dorsurn almost uniform brown with lighter central spot and interorbital bar; loreal and upper lip region uniform brown; upper limbs slightly barred; chin uniform light brown, darker than uniformly tan belly; posterior surface of thigh uniformly brown. Adult Specimen Definition Based on 11 specimens. Thumbs lacking asperities; snout rounded, vertically sloping or upper lip flared in profile; dorsal pattern uniform or with large dark coalesced blotches; posterior surface of thigh uniform, mottled, or rarely with small distinct light spots; no distinctive colors in life; dorsal texture of more or less uniform low profile granular warts bearing shagreen and a single white tubercle, warts rarely aligned into short irregular series; foot webbed. Male snout-vent length 44.9 ± 7.1, maximum 54.7 mm, female 55.4, maximum 58.1 mm; male head length/snout-vent length ratio 0.39 ± .01, female 0.40; male head width/snout-vent length ratio 0.42 ± .01, female 0.42; male eye-nostril distance/snout-vent length ratio 0.08 ± .01, female 0.08; male eye-eye distance/snout-vent length 0.18 ± .01, female 0.19; male femur/snout-vent length ratio 0.46 ± 0.02, female 0.47; male tibia/snout-vent length ratio 0.46 ± .02, female 0.46; male foot/snout-vent length ratio 0.47 ± .02, female 0.48. Larval morphology Larva elongate, depressed; belly flattened with shelf extending past body;< neither spiracle nor anus visible ; eye large, 1 8 % head-body length; oral disk broad, 39% head-body length; oral disk entire, anterior papilla gap broad, almost width of disk, oral papillae in single row, continuous posteriorly; tooth row formula 2/3 beak with chisel-like central cusp; head-body length 23% total length; total length 27.2 mm, stage 42; body rather uniformly patterned, tail with dorsal series of light continuous spots.

ÁFRICA, ÁSIA TEMPERADA, EUROPA

LC. Least Concern.

Cycloramphus boraceiensis is a species of frog in the family Cycloramphidae. It is endemic to Brazil. Its natural habitats are subtropical or tropical moist lowland forest and rivers. It is threatened by habitat loss.