Gray Wall Jumper
Scientific Name: Menemerus bivittatus
Order & Family: Araneae: Salticidae
Size: Approximately 7 to 10 millimeters in length, with females being slightly larger than males.

Natural Habitat
Commonly found on the exterior and interior walls of buildings and around window sills in tropical and subtropical regions.
Diet & Feeding
Carnivorous predator; feeds primarily on small insects such as flies, gnats, and mosquitoes that land on vertical surfaces.
Behavior Patterns
Active diurnal hunters with excellent vision. They do not build webs to catch prey but instead stalk and pounce on it. They are known for their 'dancing' courtship displays and use silk as a safety tether when jumping.
Risks & Benefits
Generally harmless to humans and not aggressive; their bite is rare and usually less severe than a bee sting. They are highly beneficial for pest control as they consume common household nuisance insects.
Identified on: 4/15/2026