Eumastacoidea

thumb|Unidentified wingless species of Thericleidae, showing characteristic "horse-head" and stubby antennae

Mastacideidae is a family of grasshoppers in the order Orthoptera. There are at least two genera and about eight described species in Mastacideidae, found in South Asia.

Episactidae is a family of grasshoppers in the order Orthoptera. There are about 19 genera and more than 60 described species in the family Episactidae, and are found in Central and South America, China, and Madagascar.

Euschmidtiidae is a family of grasshoppers in the order Orthoptera. There are at least 60 genera and more than 240 described species in Euschmidtiidae, found in Sub-Saharan Africa and surrounding islands.

Morabidae is a family of grasshoppers in the order Orthoptera. There are more than 40 genera and 120 described species in Morabidae, found in Australasia. thumb|Callitala major

Eumastacoidea is a superfamily within the order Orthoptera, suborder Caelifera. The family has a mainly tropical distribution and has sometimes been called "monkey grasshoppers".