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Phyllobates terribilis (Golden Poison Frog)

AmphibiaWeb - Phyllobates terribilis &copy 2008 Devin Edmonds (1 of is a small frog (though large for a dendrobatid), with adult females having a maximum snout-vent length of 47 mm, and adult males reaching 45 mm in snout-vent length. Males mature at 37 mm while females mature at 40-41 mm. The snout is sloping and rounded in lateral profile, and bluntly rounded to truncate in dorsal view. The canthus rostralis is rounded, and the loreal region is both vertical and slightly concave. The tympanum is concealed posterodorsally. Hands and feet lack webbing and fringe. Fingers and toes terminate in moderately expanded discs; the disc of the third finger is expanded to the same degree in both males and females. If measured while appressed, the third finger is longest with the fourth, first, and second following in decreasing or approximately equal length; if measured from the base, the third finger is longest and the first finger is next while fingers 2 and 4 are roughly equal. Hands have a large, low, rounded tubercle on the palm. An inner metacarpal tubercle is present on the base of the first finger, with one subarticular tubercle on each of fingers 1 and 2, and two subarticular tubercles on fingers 3 and 4. On the feet, the relative length of the toes is 4>3>5>2>1. The distal third of the tarsus is ridged, with the ridge continuous from the inner metarsal tubercle to the tarsal tubercle. Toes 1 and 2 each bear one subarticular tubercle, toes 3 and 5 have two subarticular tubercles, and toe 4 bears three subarticular tubercles.

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