Ecuadorian frogs of the genus Ecuadorian frogs of the genus Colostethus (Anura:Dendrobatidae) ecuadorianfrogso00colo Year: 1995 UNIV. KANSAS NAT. HIST. MUS. MISC. PUBL. NO. 87 Fig. 2. Dorsal color patterns of Colostethus. A. C. jacobuspetersi, QCAZ 1378. B. C. maquipucuna, KU 202882. C. C. machalilla, KU 132330. D. C. chocoensis, MNHG (GO 47). E. C. infraguttatus KU 142401. F. C. anthracinus, KU 120653. Lines equal 5 mm, except in A, in which it is 2 mm. developed in C. bocagei, C. elachyhistus, C. fuliginosus, C. talamancae, C. sauli, and C. shuar. In other species, it is weakly developed.
Ecuadorian frogs of the genus Ecuadorian frogs of the genus Colostethus (Anura:Dendrobatidae) ecuadorianfrogso00colo Year: 1995 UNIV. KANSAS NAT. HIST. MUS. MISC. PUBL. NO. 87 Fig. 2. Dorsal color patterns of Colostethus. A. C. jacobuspetersi, QCAZ 1378. B. C. maquipucuna, KU 202882. C. C. machalilla, KU 132330. D. C. chocoensis, MNHG (GO 47). E. C. infraguttatus KU 142401. F. C. anthracinus, KU 120653. Lines equal 5 mm, except in A, in which it is 2 mm. developed in C. bocagei, C. elachyhistus, C. fuliginosus, C. talamancae, C. sauli, and C. shuar. In other species, it is weakly developed. A sigmoid or straight inner tarsal fold is present in most spe- cies; it extends from the distal half or two thirds of the tarsus to the inner metatarsal tubercle. Webbing between fingers and toes.—Webbing is absent between the fingers in most Ecuadorian Colostethus; however, some species, such as C. chocoensis (Fig. 1) and possess a small webbing between Fingers II and III that is continu- ous with a lateral fringe. The amount of webbing between the fingers in C. chocoensis varies. The extent of webbing between toes varies from unwebbed to almost completely webbed. Also, in- traspecific variation in foot webbing exists among populations of C. infraguttatus and C. elachyhistus, and within populations of C. toachi. Dorsal color patterns.—Several Colostethus have a uniform brown dorsum; however, most spe- cies have dark marks or dark stripes on the dorsum (Fig. 2). Dark marks may be in an irregular or reticulate pattern as in C. maquipucuna, some speci- mens of C. pulchellus, and C. jacobuspetersi. Some populations of C. elachyhistus and C. shuar have irregularly distributed dark spots. The most com- mon pattern is that of a transverse mark between the eyes, followed posteriorly by a 'V'-shaped mark
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