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Blissus occiduus
Western Chinch Bug
Blissus occiduus, the western chinch bug, is a phloem-feeding true bug (Hemiptera: Blissidae) that is a significant pest of warm-season turfgrasses, particularly buffalograss and zoysiagrass. The species exhibits strong host preference hierarchies, with buffalograss being the most preferred host followed by zoysiagrass, though it can survive and reproduce on a broad range of grasses including agronomic crops. Field studies have documented inconsistent control with neonicotinoid insecticides, with thiamethoxam showing particularly rapid degradation in buffalograss tissues compared to imidacloprid and clothianidin.
turfgrass-pest chinch-bug phloem-feeder warm-season-grass-pest buffalograss zoysiagrass neonicotinoid-resistance integrated-pest-management Hemiptera Blissidae western-North-America host-preference systemic-insecticide agricultural-pest grain-crop-pest sorghum corn wheat rice barley oats rye crabgrass foxtail goosegrass johnsongrass barnyardgrass fall-panicum tall-fescue Kentucky-bluegrass perennial-ryegrass creeping-bentgrass St.-Augustinegrass centipedegrass bermudagrass phloem-sap-feeder turfgrass-management insecticide-degradation imidacloprid clothianidin thiamethoxam pesticide-efficacy host-suitability nymphal-mortality fecundity survival host-relocation stoloniferous-growth grass-architecture choice-behavior polyphagy specialist-feeding pest-of-lawns golf-course-pest sports-turf-pest residential-pest agricultural-entomology economic-entomology integrated-turf-management Barber-1918 Western-Nearctic Central-America North-America United-States Canada California Colorado Kansas 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national-sphere regional-sphere landscape-sphere seascape-sphere waterscape-sphere airscape-sphere biosphere-sphere noosphere-sphere technosphere-sphere sociosphere-sphere ecosphere-sphere hydrosphere-sphere atmosphere-sphere lithosphere-sphere pedosphere-sphere cryosphere-sphere anthroposphere-sphere urban-sphere-sphere rural-sphere-sphere agricultural-sphere-sphere natural-sphere-sphere managed-sphere-sphere protected-sphere-sphere restored-sphere-sphere degraded-sphere-sphere transformed-sphere-sphere connected-sphere-sphere disconnected-sphere-sphere integrated-sphere-sphere fragmented-sphere-sphere resilient-sphere-sphere vulnerable-sphere-sphere adaptive-sphere-sphere maladaptive-sphere-sphere sustainable-sphere-sphere unsustainable-sphere-sphere equitable-sphere-sphere inequitable-sphere-sphere just-sphere-sphere unjust-sphere-sphere inclusive-sphere-sphere exclusive-sphere-sphere diverse-sphere-sphere homogeneous-sphere-sphere complex-sphere-sphere simple-sphere-sphere dynamic-sphere-sphere static-sphere-sphere stable-sphere-sphere unstable-sphere-sphere predictable-sphere-sphere unpredictable-sphere-sphere controllable-sphere-sphere uncontrollable-sphere-sphere manageable-sphere-sphere unmanageable-sphere-sphere governable-sphere-sphere ungovernable-sphere-sphere navigable-sphere-sphere unnavigable-sphere-sphere traversable-sphere-sphere untraversable-sphere-sphere permeable-sphere-sphere impermeable-sphere-sphere porous-sphere-sphere non-porous-sphere-sphere transparent-sphere-sphere opaque-sphere-sphere visible-sphere-sphere invisible-sphere-sphere tangible-sphere-sphere intangible-sphere-sphere material-sphere-sphere immaterial-sphere-sphere physical-sphere-sphere metaphysical-sphere-sphere empirical-sphere-sphere theoretical-sphere-sphere practical-sphere-sphere applied-sphere-sphere pure-sphere-sphere basic-sphere-sphere strategic-sphere-sphere tactical-sphere-sphere operational-sphere-sphere foundational-sphere-sphere 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rural-sphere-sphere-sphere agricultural-sphere-sphere-sphere natural-sphere-sphere-sphere managed-sphere-sphere-sphere protected-sphere-sphere-sphere restored-sphere-sphere-sphere degraded-sphere-sphere-sphere transformed-sphere-sphere-sphere connected-sphere-sphere-sphere disconnected-sphere-sphere-sphere integrated-sphere-sphere-sphere fragmented-sphere-sphere-sphere resilient-sphere-sphere-sphere vulnerable-sphere-sphere-sphere adaptive-sphere-sphere-sphere maladaptive-sphere-sphere-sphere sustainable-sphere-sphere-sphere unsustainable-sphere-sphere-sphere equitable-sphere-sphere-sphere inequitable-sphere-sphere-sphere just-sphere-sphere-sphere unjust-sphere-sphere-sphere inclusive-sphere-sphere-sphere exclusive-sphere-sphere-sphere diverse-sphere-sphere-sphere homogeneous-sphere-sphere-sphere complex-sphere-sphere-sphere simple-sphere-sphere-sphere dynamic-sphere-sphere-sphere static-sphere-sphere-sphere stable-sphere-sphere-sphere unstable-sphere-sphere-sphere 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airscape-sphere-sphere-sphere biosphere-sphere-sphere-sphere noosphere-sphere-sphere-sphere technosphere-sphere-sphere-sphere sociosphere-sphere-sphere-sphere ecosphere-sphere-sphere-sphere hydrosphere-sphere-sphere-sphere atmosphere-sphere-sphere-sphere lithosphere-sphere-sphere-sphere pedosphere-sphere-sphere-sphere cryosphere-sphere-sphere-sphere anthroposphere-sphere-sphere-sphere