Species Fact Profile: Eastern Lubber Grasshopper (Romalea microptera)

Eastern Lubber Grasshopper

                                           Romalea microptera (Palisot de Beauvois, 1817)

Range: Southeastern and Central United States

Habitat: Open Woodlands, Fields

Diet: Herbs, Shrubs , and Grasses

Social Grouping: Large cohorts upon hatching, less social as they age

Reproduction: Breeds in the summer.  Females lays about up to three clutches of 50 eggs in a burrow in the soil, which overwinter and hatch in the spring.  Undergo five molt periods (instars), each about 20 days long before becoming adults

Lifespan: 1 Year

      Conservation Status: IUCN Not Evaluated

• Largest grasshoppers in the United States (alongside western lubber, Taeniopoda eques).  Adults generally 4-7 centimeters long, but can reach up to 9 centimeters.  Females are larger than males.  Wings are fairly small, about half the length of the abdomen, and cannot be used in flight
• Coloration and patterning varies across range, with some individuals yellow or orange, others primarily black; some are intermediate, yellow with black banding.  Bright red color on the back beneath the wings, which can be flared to become more prominent
• Bright coloration warns predators of unpleasant taste.  Can also emit a foul, foamy secretion to deter predators (which can be sprayed up to 15 centimeters), as well as make a loud hiss to frighten enemies.  One predator is the loggerhead shrike, which impales lubbers on thorns or fences and leaves them there for a day or two, allowing the toxin to degrade
• While adults are less social than nymphs, they will still often aggregate into groups in the evening, possibly as a form of protection from predators
• "Lubber" means a slow, clumsy, or lazy person, likely bestowed upon this species because of its slow movements (not especially good at hopping, usually seen walking - but can be decent climbers).  Species name from the Greek for "Small Wing"
• Pose some threat as an agricultural nuisance when present in sufficient numbers, will feed on a variety of crops.  Control often consists of manual removal, as these grasshoppers are resistant to many pesticides, both due to their large size and their ability to detoxify natural toxins