Genus Herrera Distant, 1905b

Herrera Distant 1905b: 486 .

Type species. Cicada marginella Walker 1858a: 21 ( Orizaba, Vera Cruz, Mexico) .

Diagnosis. Distant (1905b) distinguished Herrera by a head about as wide as the mesonotum, a vertex longer than the frons, a pronotum about as long as the mesonotum, an abdomen about as long as the distance from the apex of the head to the posterior cruciform elevation, small male opercula, strongly spined fore femora, and a fore wing width being slightly more than half the fore wing length but the fore wing width can be as little as one third in some species. The relative length of the pronotum to the mesonotum, the fore wing width ratio and the size of the male opercula have become more variable as a greater number of species has been described. The pygofer basal lobe appendage is diagnostic for each species of the genus.