Abstract
A new endemic characid fish from the wet rainforest region of Southeastern Costa Rica is described from extensive material. Roeboides ilseae is distinctive in Central America for its large black humeral spot and exceptionally high lateral line scale count. The species replaces the wide ranging Roeboides guatemalensis in southern Costa Rica and is apparently nowhere sympatric with lt. It is probable that the new form is a sister species of Roeboides occidentalis of central and eastern Panama which also replaces Roeboides guatemalensis in that country.
References
Bussing, W.A. 1974. Pterobrycon myrnae, a remarkable new glandulocaudine characid fish from Costa Rica. Rev. Biol. Trop., 22: 135-159.
Roberts, T. R. 1970. Scale-eating American characoid fishes, with special reference to Probolodus heterostomus. Proc. Calif. Acad. Sci., 4th Ser., 38: 383-390.
Comments
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Copyright (c) 1985 Revista de Biología Tropical