Melanoplus sanguinipes (Migratory Grasshopper)

Melanoplus sanguinipes (Migratory Grasshopper)

This is a spurthroated grasshopper (Melanoplinae), so called because of a small, but readily visible when in hand, spine between the front legs on the ventral surface. It is a member of the genus Melanoplus, which is represented by over 50 species in North America, of which at least 14 occur in our region. These are very similar species, colored variably by brown, gray, tan, and black blotches, with unpigmented hindwings. 

Melanoplus sanguinipes has wings which extend beyond the abdomen, with a central row of dark dots on the forewings, and dark, oblique bands on the hind femora. They can only be positively identified by examining genitalia of males. The most easily accessed trait is the supra-anal plate, which is visible in hand with a hand lens, and is located on the dorsal posterior of the abdomen.

Supra-anal plate of Melanoplus sanguinipes, showing the distinctive short, spreading furcula.

Migratory Grasshoppers can be serious agricultural pests, with concentrations of up to 300 insects per square yard. They eat almost anything green, though they seem to prefer forbs over grasses. On warm days they will migrate with the wind, and can cover 30 miles per day. The eggs overwinter in soil and hatch in the spring. Some members of Chloropidae (frit flies) consume the eggs, especially Goniopsita oophaga. And, besides being susceptible to a variety of pathogens and parasites, almost every insectivorous fish, herp, bird, and small mammal preys heavily upon them. Still, the swarms can be massive, and economic impact for farmers can be extensive. 

Migratory Grasshopper

Migratory Grasshopper | Grasshoppers | Entomology | University of Wyoming

Species Melanoplus sanguinipes – Migratory Grasshopper – BugGuide.Net


Size- Males 19-24mm; females 18-32mm

Habitat- May be found anywhere

Range- Region wide 

Eats- all low growing vegetation

Flight Season- Adults are found from mid-summer until first frosts. 

Melanoplus sanguinipes (Migratory Grasshopper)

2 thoughts on “Melanoplus sanguinipes (Migratory Grasshopper)”

Leave a Reply

Your email address will not be published. Required fields are marked *