This picture was posted on my local gardening swap group. He says there are tons of them. Anyone know what they are? I've never seen anything this unusual here in Alameda.
Have you seen red and black colored insects crawling all over your grass and up the sides of your house? Do you have a Goldenrain tree or Chinaberry tree in your yard or close by? Then most likely the insect you are seeing is the harmless Jadera haematoloma. This is a seed-eating insect and it won’t harm your plants.