Subspecies-dimorphism
Guides
Aeoloplides turnbulli
thistle grasshopper, Russian thistle grasshopper, saltbush grasshopper
Aeoloplides turnbulli is a medium-sized, robust spur-throated grasshopper in the family Acrididae, commonly known as the thistle grasshopper or Russian thistle grasshopper. The species exhibits two recognized subspecies: A. t. turnbulli in the north and A. t. bruneri in the south, distinguished primarily by wing length. It is an early-hatching species with a prolonged nymphal development period of 50–60 days. The species has demonstrated outbreak potential, with historical population irruptions documented in western Kansas during the 1930s and in the Big Horn Basin, Wyoming, in 1993.
Syneta extorris
Syneta extorris is a leaf beetle species in the family Chrysomelidae, described by Brown in 1940. The species is endemic to eastern North America and comprises two recognized subspecies with distinct geographic distributions and host associations. The nominate subspecies occurs in the southern Appalachian Mountains, while S. e. borealis ranges from Newfoundland to Ontario and New York.