. Bulletin. Science; Natural history; Natural history. 108 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 1. Eleutherodactylus rayo, male paratype (CRE 3980) from Quebrada Fortuna at Carreterra Interamericana, Provincia de San Jose, Costa Rica, 1750 m. DeWeese photograph. Within this cluster of slightly webbed forms it may be distinguished further by differences in posterior thigh coloration which is uniform reddish brown (tala- mancae), brown with discrete small light spots (fitzingeri) or dark chocolate with very large light spots {audi). The posterior thigh surfaces of rayo are essentially a
. Bulletin. Science; Natural history; Natural history. 108 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 1. Eleutherodactylus rayo, male paratype (CRE 3980) from Quebrada Fortuna at Carreterra Interamericana, Provincia de San Jose, Costa Rica, 1750 m. DeWeese photograph. Within this cluster of slightly webbed forms it may be distinguished further by differences in posterior thigh coloration which is uniform reddish brown (tala- mancae), brown with discrete small light spots (fitzingeri) or dark chocolate with very large light spots {audi). The posterior thigh surfaces of rayo are essentially a uniform dark purple in life and preservative. El. rayo is distinguished from members of the rugulosus group in having a well- developed calcar and in having greatly enlarged emarginate disks on fingers III— IV, while the disks are rounded, not greatly enlarged and never emarginate in the latter group. The dark purplish coloration of the hindlimb surfaces uniquely dis- tinguishes El. rayo from all other known members of the fitzingeri and rugulosus groups in Central America. Summary of characteristics.—General: Head about as wide as long. Nostril closer to tip of snout than to eye. Loreal outline slightly sloping. Snout profile, and canthus rostralis round. Dorsal outline of snout subelliptical. Choanae ovoid; vomerine teeth located between but behind level of choanae in two transverse series separated at the midline. Vocal slits and internal vocal sacs in males. Tympanum approximately Vi height of orbit; internal, indistinct; round in males oval in females. Skin of head and dorsum smooth; upper eyelid with a single tubercle. Finger II longer than I. Finger disks on I—II rounded and expanded, on III—IV emarginate; about 2 times as wide as finger on III-IV. All fingers have well developed lateral fringes. Whitish nuptial pads on thumbs of male. Subar- ticular tubercles flattened, round to ovoid in outline, globular; no supernumerary tubercles; thenar tubercle large, elon
Size: 1986px × 1259px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectnaturalhistory, booksubjectscience
