Three new species of Leptohyphes Eaton (Ephemeroptera: Leptohyphidae) from Colombia

Three new species of Leptohyphes Eaton, 1882 (Ephemerotera: Leptohyphidae) are described, diagnosed and illustrated from nymphs collected in Colombia. Geographical ranges and ecological notes relating important environmental variables are given for each species. Leptohyphes andina sp. nov. is characterized by: forefemur length/maximum width 1.8-1.9, fore and hind margin of middle and hind femora with strong spine-like setae on elevated sockets, femoral surface covered by small pale spots, apex of femora with anterior margin roundly projected distally, tarsal claw only with 3-4 marginal denticles, pronotum with triangular lateral projection, hind wing pads present in female, gill formula 3/5/5/5/2, gill V with ventral extension on dorsal lamella. Leptohyphes quimbaya sp. nov. presents the following characters: body covered by hair-like setae, with paired short and blunt tubercles on abdominal terga V-IX, femora wide (forefemur length/maximum width 1.6), fore and hind margin of femora with tiny spine-like setae, tarsal claws with 2-3 marginal denticles, pronotum with triangular (but apically blunt) lateral projection, hind wing pads present in females, gill formula 3/7/7/5/2, gill V without ventral extension on dorsal lamella. Leptohyphes calarca sp. nov. is distinguished by: pilose body, slender femora (forefemur length/maximum width 2.3), foremargin of middle and hind femora without setae, tarsal claws with 5 marginal denticles and 1 submarginal subapical denticle, pronotum strongly projected laterally, fore wingbuds blackish, hind wing pads present in females, gill formula 3/4/4/3/1, gill V with ventral extension on dorsal lamella.