What's That Bug? does not endorse extermination

Help please
After the last hard rain 10 days ago, these bugs have been coming out every night, they look black, are about 1/4 inch long and jump around from out of the grass onto my porch. They seem to be attracted to light, because each morning I find hundreds of their little dead copper colored bodies all over my front and back porch. In the 2 years I’ve lived here, I’ve never seen them before. What are they?
Thanks very much from San Dimas, CA
Janet Boydell

Hi Janet,
You are being plagued by Lawn Shrimp, a colorful name for a type of terrestrial Amphipod. Terrestrial amphipods live on the surface (top 1/2 inch) of mulch and moist ground. After rains, large numbers of amphipods can migrate into garages or under the doors of houses. There they soon die their color changing from brown, green or black to red upon death. They migrate out of rain-soaked soil to drier areas where they usually end up dying. Most species are active at night. Here is a site with additional information.

Thank you very much!
Hi and thanks so much for getting back to me. By the way, your website is wonderful…my son thinks it’s so cool that you posted our question and then answered us. Very helpful and useful! I’ll pass it on.
Best to you,

What's That Bug? does not endorse extermination

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