- Author: Shimat V. Joseph
Lygus bug, Lygus hesperus feeding could cause economic damage to celery. Like any other true bug, lygus bug has a piercing and sucking mouth part which appears as a snout-like structure or beak on the head. Within the beak, four stylets are housed which come out while the bug feeds on the plant. In the process, stylets puncture the cells and leave a feeding sheath within the plant (Figure 1a and b). As time progresses, these injured tissues, depending on the severity, turn into sunken or elongated lesions or callus on the stem making the celery unmarketable (Figure 2).