The first report of Blissus occiduus Barber causing significant injury to zoysiagrass, Zoysia japonica Steudel, occurred in southeast Nebraska during the summer of 2000. Subsequent investigations documented the extensive host range of B. occiduus, and revealed its potential to damage numerous turfgrass, crop and weed species. No-choice studies determined the susceptibility of buffalograss, zoysiagrass and bermudagrass cultivars to B. occiduus feeding. Among the moderately resistant grasses were the buffalograsses: “184”, “196” and “PX 3-5-1” the zoysiagrasses: Emerald, “8516”, and El Toro, and the bermudagrass Mini Verde. Moderately susceptible grasses included the buffalograss zoysiagrass: Myers, and the bermudagrass Tifway 419. This presentation will report on a series of choice, fecundity, and nymphal development studies that documented the modalities of chinch bug resistance to these warm-season turfgrass cultivars.