识别与危害Identification & damage
甘蔗粉蚧常躲在叶鞘下面，茎节处尤其值得检查。虫体粉红，薄蜡粉覆在表面，不是厚厚的白色棉团。
Pink sugarcane mealybugs often hide beneath sheaths around nodes. Their pink bodies show through thin wax, rather than thick cottony coats.
来源与传播Origins & spread
带虫种茎能把虫带入新田，外表干净也要查叶鞘。小若虫会爬行转移，隐蔽虫群容易被日常巡视漏掉。
Infested planting cane can introduce colonies; inspect beneath the sheath. Small crawlers move to new sites; concealed colonies are easily missed.
生活史与微观过程Life cycle & microscopic processes
雌虫体内的卵发育较久，产出后孵化很快。因此常见雌虫旁已有小若虫，别硬画成长时间裸露的卵堆。初孵若虫粉红而半透明，找到位置后开始刺吸。本片跟踪雌虫发育线，雌虫不经过蛾类那样的蛹期。口针吸取汁液，蜜露可伴随煤污和蚂蚁活动。蚂蚁出现是检查线索，并不等于已经确定粉蚧危害。
Eggs develop within the female and hatch soon after being laid. Young crawlers often accompany females; do not assume long-lived exposed egg piles. New crawlers are pink and translucent; they settle and begin feeding. Female development has no moth-like pupal stage. Sap feeding produces honeydew, sometimes accompanied by sooty mould and ants. Ant activity is a clue, not proof of mealybug damage.
田间检查与确认Inspection & confirmation
轻掀松动叶鞘，比较茎节、基部和邻近健康蔗株。记录活虫、蜜露和长势，难以定种时留样送检。
Lift loose sheaths gently and compare nodes, bases and nearby healthy canes. Record live insects, honeydew and growth; submit uncertain specimens.
预防、治理与复查Prevention, management & follow-up
使用检查合格的种茎，避免把带虫材料运往新田。田间排水和氮肥要合理，清理叶鞘按当地栽培要求。虫群藏在叶鞘下，随手喷一遍不等于已经接触到害虫。需要药剂时按登记标签执行，并复查隐蔽处的活虫。
Use inspected planting cane and keep infested material out of new fields. Manage drainage and nitrogen; follow local guidance on sheath removal. A casual spray may never reach colonies hidden beneath sheaths. Follow locally registered labels when needed, then recheck concealed live insects.