Fig. 1.

Photographs of túngara frogs (Engystomops pustulosus) and frog-biting midges (Corethrella spp). (a) Calling male túngara frog preyed upon by frog-biting midges; (b) female (bottom) in amplexus with a male (top) covered with biting midges; (c) female (bottom) with a biting midge on her nostril that was passed from the male during amplexus. Túngara frogs are about 30 mm long while the frog-biting midges are only about 1.5 mm. Photos taken by Alexander Baugh (a) and Ximena E Bernal (b,c).