| Latin Name | Scirpophaga incertulas |
| Common Name | Yellow stem borer |
| Biology | Chilo suppressalis is highly host-specific, damaging only rice stems. Larvae rapidly bore into stems, leaving only small water-soaked holes externally (inaccessible to conventional sprays). Generations per year vary significantly by climate (5-8 in tropics, 3-4 in temperate zones), with females laying 80-200 eggs per clutch—eggs are well-hidden in leaf sheath interiors or rice clump bases—and overlapping generations are common. Adults are sensitive to white light, flying <1m above ground (dispersal radius: 50-100m), using cis-11-hexadecenol (Z11-16:OH) for intraspecific communication, and exhibit strong phototaxis and low-altitude aggregation. Field distribution is concentrated yet cryptic (larvae remain inside stems, with only small external holes), requiring precise monitoring and targeted control to block stem-boring damage. |
| Damage | This pest primarily damages rice plants, but also affects water bamboo, corn, and other Poaceae plants. |
| Distribution Regions | Rice-growing regions of Southeast Asia |
| Monitoring | Pheromone lures mimic natural sex pheromones to attract male insects into specialized traps for population monitoring and suppression. As a core IPM component, monitoring enables early risk detection and targeted control. Mass trapping reduces mating opportunities to curb offspring populations. Protocols: ●Use only with matched traps. ●15-45 traps/hectare,replace/replenish every 4-6 weeks. ●Wear gloves or wash hands with detergent when switching lure types. ●Refer to trap-specific hanging instructions. |
| Recommended Traps | Delta Trap, Wing Trap |
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