Eggs Ackley 1 Sep 15, 2021 06:11 PM Worm ID They are Caterpillars/Pupae not worms. Leaves fall decompose slowly, caterpillars expedite and enhance the process. Provide Free manure/ fertilizer. Nature cycling, bet the N content is 5% or better. Less leaf area =less respiration during the hottest driest most stressful time of year. Probably a net positive overall . http://ipm.ucanr.edu/PMG/PESTNOTES/pn7422.html Oak Titmouse, Bushtit, and Bewick Wren are predators.