Order Hemiptera (Homoptera), tsev neeg Cupids, nplai kab, mealybugs. Feem ntau yog plum mite, apple mite, txiv ntseej beetle, pteridophytoneum, thiab tsev cog khoom mealybug. Kev piav qhia ntawm kab tsuag. Cov no yog cov kab me me nrog lub cev sib txawv heev. Cov poj niam yeej ib txwm tsis muaj tis, loj dua cov txiv neej, nrog lub cev zoo li worm, feem ntau npog nrog cov waxy txheej. Raws li lawv cov tsos, midges tau muab faib ua peb tsev neeg: mealybugs (lub cev mos uas npog nrog lub ntsej muag, lub ntsej muag fluffy); khob-puab (lub cev convex, liab qab los yog npog nrog ib tug waxy txheej); scutes (them los ntawm daim ntaub thaiv npog tsis txuas rau lub cev).
Cov tsos mob
Qhov teeb meem ntawm kab yog nyob rau hauv qhov tseeb tias lawv nqus cov kua txiv los ntawm cov nroj tsuag thiab "kis" cov nroj tsuag nrog secretions uas ua rau kev loj hlob retardation, necrosis thiab tuag ntawm tua. Honeydew secreted los ntawm midges yog "khoom noj" zoo heev rau honeydew fungi, uas tiv thaiv cov nroj tsuag los ntawm kev zom. Nplooj thiab tua tau npog nrog txheej dub (soot).
Hwm cov nroj tsuag
Deciduous thiab coniferous ntoo thiab shrubs, txiv hmab txiv ntoo ntoo thiab shrubs, ornamental thiab potted nroj tsuag.
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