Eumastacidae
Guides
Eumorsea
Ball's monkey grasshopper, Pinaleno monkey grasshopper
Eumorsea is a genus of monkey grasshoppers in the family Eumastacidae, established by Hebard in 1935. The genus contains at least three described species, including Eumorsea balli, Eumorsea pinaleno, and Eumorsea truncaticeps. These grasshoppers are found in the southwestern United States and northwestern Mexico. Members of Eumastacidae are characterized by their slender bodies and elongated hind legs adapted for jumping.
Eumorsea pinaleno
Pinaleno monkey grasshopper
Eumorsea pinaleno is a wingless grasshopper endemic to the Pinaleno Mountains of Arizona. It belongs to the family Eumastacidae, commonly known as monkey grasshoppers. The species is known from very few observations, and its biology remains poorly documented.
Morsea
monkey grasshopper
Morsea is a genus of monkey grasshoppers in the family Eumastacidae, comprising approximately seven described species. These insects are endemic to the southwestern United States, with species distributed across California, Arizona, Nevada, and Utah. The genus was established by Scudder in 1898. Species within Morsea are typically associated with arid and semi-arid habitats including chaparral, pinyon-juniper woodland, and sand dune environments.
Morsea californica
Chaparral Monkey Grasshopper
Morsea californica, commonly known as the chaparral monkey grasshopper, is a species of monkey grasshopper in the family Eumastacidae. It is endemic to California and associated with chaparral habitats. The species was described by Scudder in 1898. As a member of the Eumastacidae, it belongs to a family of grasshoppers known for their slender bodies and preference for woody vegetation.
Morsea catalinae
Catalina monkey grasshopper
Morsea catalinae, described by Rentz and Weissman in 1981, is a species of monkey grasshopper endemic to the family Eumastacidae. The common name "Catalina monkey grasshopper" references its association with Santa Catalina Island, California. Like other eumastacids, it possesses a distinctive body plan with elongated hind legs adapted for jumping and a pronotum that extends backward over the abdomen. The species has been documented from California and is considered present in North America, though specific habitat details and ecological data remain limited in published literature.
Morsea dumicola
yavapai monkey grasshopper
Morsea dumicola, commonly known as the yavapai monkey grasshopper, is a species of monkey grasshopper in the family Eumastacidae. The species was described by Rehn and Hebard in 1918. It is found in North America, with confirmed records from Arizona. Monkey grasshoppers (family Eumastacidae) are a distinctive group of orthopterans characterized by their aposematic coloration and diurnal habits.
Morsea kaibabensis
kaibab monkey grasshopper
Morsea kaibabensis is a species of monkey grasshopper in the family Eumastacidae, endemic to the Kaibab Plateau region of northern Arizona. The species was described by Rehn and Grant in 1958 and is one of few documented members of its genus. Monkey grasshoppers in this family are characterized by their distinctive body proportions and reduced wing development compared to typical grasshoppers.
Morsea tamalpaisensis
tamalpais monkey grasshopper
Morsea tamalpaisensis, described by Rehn & Hebard in 1909, is a species of monkey grasshopper endemic to the family Eumastacidae. The common name references Mount Tamalpais in California, indicating a restricted geographic distribution. Like other eumastacids, this species exhibits the characteristic morphology of monkey grasshoppers, including a compact body form and specialized hind legs adapted for jumping. The species has been documented through limited observations, with 20 records in iNaturalist suggesting it is not frequently encountered.
Psychomastax
monkey grasshoppers
Psychomastax is a genus of monkey grasshoppers in the family Eumastacidae, first described by Rehn and Hebard in 1918. The genus contains at least four described species distributed in arid regions of the western United States, primarily California and Nevada. These grasshoppers are characterized by their distinctive morphology typical of Eumastacidae, which are known for their jumping ability and often colorful appearance. The genus name reflects their placement within the Psychomastacini tribe.
Psychomastax inyo
White Mountain Grasshopper
Psychomastax inyo, commonly known as the White Mountain Grasshopper, is a species of monkey grasshopper in the family Eumastacidae. It was described by Rehn and Grant in 1959. The species is found in North America, with distribution records from California. As a member of Eumastacidae, it belongs to a group commonly referred to as monkey grasshoppers, characterized by their distinctive morphology and behavior. Available information on this species is limited, with only three observations recorded in iNaturalist.
Psychomastax psylla
San Jacinto monkey grasshopper
Psychomastax psylla, commonly known as the San Jacinto monkey grasshopper, is a species of monkey grasshopper in the family Eumastacidae. It was described by Rehn and Hebard in 1918. The species is endemic to North America, with records from California. Monkey grasshoppers are a distinct group within Orthoptera characterized by their small size and unusual morphology compared to typical grasshoppers.