Detailed description and observations of the tadpole of Amnirana albolabris (Anura: Ranidae) from southeastern Gabon

Abstract

We provide an expanded description of the tadpole of Amnirana albolabris (Ranidae) that includes external linear morphometrics and colouration across a developmental series ranging from Gosner stages 26–42. This description is based on material collected in Batéké Plateau National Park in south-eastern Gabon. The diurnal tadpoles are strikingly bright orange in life, a colouration that provides effective crypsis for the tannic waters in which they live. We also provide a comparative table for all of the described Amnirana tadpoles. The tadpole of A. albolabris can be identified in life by its unique colouration or in preservative by the seven prominent skin glands, assumed to contain defensive toxins.