How to Manage Pests
UC Pest Management Guidelines
This plant bug may be abundant on bermudagrass florets and leaves. Trigonotylus tenuis is a small, light green, narrow, stilt-legged seed bug. Adults and immatures may be found in bermudagrass at any time from spring through fall.
Trigonotylus tenuis is of greatest concern during spring and fall seed-production seasons from regrowth through bloom. Its feeding can reduce plant vigor, stunting growth and delaying the development of florets. Adult feeding on developing seeds also reduces seed yields.
Monitor seed fields with a sweep net for Trigonotylus tenuis from regrowth through bloom. Treat if Trigonotylus tenuis counts reach 100 per sweep. When fields are developing seed, monitor for adult bugs only, as nymphal mouthparts do not appear to be large enough to attack developing seed. One adult mirid per 90° sweep 2 weeks before summer harvest can reduce uncleaned seed yields by almost 20 pounds per acre.
UC IPM Pest Management Guidelines: Bermudagrass Seed Production