Asparagus beetles. Later there will be grey slug like lumps on the fronds which are the larvae. The beetles scuttle and try to fly away but not too hard to catch and destroy. Same for lumpy larvae. If too tedious, I sometimes cut off the frond they are on.
After the fronds die in the fall-winter, be sure to cut to the ground and remove because they over winter in the dead stalk.
Birds, spiders, baby praying mantises, and other predators sometimes help to control the larvae.
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