Appearance
It is a large grasshopper, reaching lengths of 4 to 7 centimeters. It is mostly brown and gray spotted or patched in cryptic coloration. This species is known as a pest on ornamental plants and many types of crop plants.
Distribution
It is a troublesome invasive species in Hawaii. A particularly destructive swarming event occurred on the Hawaiian island of Nihoa in 2004, wiping out some 90% of the vegetation on the island. Despite reaching high population densities, this particular species does not swarm as locusts, which is a distinct behavior accompanied by a gregarious phase change. Rather, the grasshoppers reached swarm proportions despite in solitary form, as a result of being an invasive species in an extremely favorable environment. It was probably introduced to Hawaii several decades ago and then spread through the archipelago by flying; it has the ability to fly at least 300 miles across ocean.
Behavior
The grasshopper becomes sexually mature at 3 to 4 months of age. Any stage of its life cycle can be seen at any time of the year, but the adult is less active during the winter and fall. Mating usually occurs on warm nights in summer, and often around bright lights.
Habitat
It lives in many habitats including desert, woodland, and lower elevation mountainous areas.References:
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