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How to identify it
- Adult females are oval, wingless and clearly segmented, up to 4 mm long. They are pale yellow just after molting, then turn brownish orange and gradually become coated in white, powdery wax.[1]
- Older females have a bare strip down the middle of the back, and 18 pairs of short wax filaments ring the body, with the two at the rear longer than the rest.[1]
- Tiny yellow eggs sit in a cottony egg sac that sticks out partly from under the rear of the female.[1]
- Adult males are pink, about 1 mm long, with one pair of wings and two tail filaments. They are delicate, short-lived and easy to overlook.[1]
Look-alikes
| Look-alike | How to tell them apart |
|---|---|
| Citrus mealybug (Planococcus citri) | Practically identical in looks, hosts and distribution, so the two are often misidentified. Specialists separate adult females with a scoring system based on six diagnostic features or, faster and more reliably, with DNA tests. The two species were once treated as one.[1][2][3] |
Where it lives
It is native to Asia and is now widespread in tropical and subtropical regions, including at least 21 countries and territories in the Caribbean and Central and South America. In the United States it is known from Hawaii and southern Florida; pheromone traps have caught males at every south Florida location studied, though in low numbers.[1][2][3]
Biology and life cycle
In warm climates it stays active and breeds all year. In laboratory studies, females developed from egg to adult in as little as 27 days at 29 °C (84 °F) and laid 206 to 270 eggs, and females made up 60 to 73 percent of populations.[1]
Females pass through three nymphal stages before adulthood. Males go through two nymphal stages and then a prepupa and pupa inside a waxy cocoon before emerging as winged adults.[1]
Its reported hosts span nearly 80 plant families and include banana, citrus, cocoa, coffee, corn, grape, mango, potato and soybean, though it appears to prefer cocoa and many listed hosts are probably secondary. It has also been reported as a cotton pest in Brazil.[1][2]
Ants feed on its honeydew and can change how many mealybugs build up. In Papua New Guinea, attendance by an aggressive ant reduced how often the mealybugs were parasitized.[1][2]
Damage and signs
- Feeding can reduce yield, lower plant and fruit quality, stunt growth, and cause discoloration and leaf drop. It can also spread plant viruses that kill plants, and when it does it can be an economic pest even in low numbers.[1]
- It produces large amounts of honeydew. Sooty mold growing on it can cover enough leaf surface to interfere with photosynthesis and leaves cosmetic blemishes that hurt the sale of fruit and plants.[1]
- It has not been reported to cause serious damage in the Caribbean or Central and South America, probably because of its natural enemies there, and UF reported no damaging populations in Florida in the years after its discovery.[1]
Health risk
The sources treat it only as a plant pest; none mentions bites or any risk to people or pets.[1][2]
Control
Prevention
Traps baited with its sex pheromone attract only this species and can detect even small populations. In south Florida, males turned up in traps at every site studied, while inspectors checked more than 14,000 shoots, fruit and flowers over six months before finding the first adult female.[1][3]
Biological control
Natural enemies are the first choice. Lady beetles, a minute pirate bug, a hover fly and the predatory midge Diadiplosis coccidarum feed on it, and two small parasitic wasps, Leptomastix dactylopii and Coccidoxenoides perminutus, attack it. Both wasps are sold in the United States for citrus mealybug, and UF recommends releasing these natural enemies first if damaging populations turn up.[1]
Pesticides
Sprays often fail because the mealybugs hide in cracks, crevices and under bark. Systemic insecticides that move through the whole plant work best, and UF lists the neonicotinoids acetamiprid, clothianidin, dinotefuran, imidacloprid and thiamethoxam as examples. Chemical control is still used in greenhouses and nurseries, which have zero tolerance for mealybugs.[1]
Common questions
- Can I tell passionvine mealybug from citrus mealybug by looking at it?
- Not reliably. They look nearly the same and are often misidentified; specialists score six diagnostic features of adult females or use DNA tests.[1][3]
- What plants does passionvine mealybug attack?
- More than 250 plants have been reported, including citrus, grape, mango, banana, coffee, potato and soybean, but it appears to prefer cocoa wherever that crop grows.[1][3]
- Is passionvine mealybug causing damage in Florida?
- It was first found there in 2010, and UF's 2012 fact sheet reported no damaging populations since, likely because existing natural enemies are keeping it in check.[1]
Sources
- University of Florida IFAS Extension (EDIS), “Passionvine Mealybug, Planococcus minor (Maskell) (Hemiptera: Pseudococcidae) (ENY-920).” journals.flvc.org/edis/article/view/119515 (accessed 2026-11-09)
- ScaleNet (scale insect database begun at the USDA ARS Systematic Entomology Laboratory), “ScaleNet catalogue: Planococcus minor (Maskell).” scalenet.info/catalogue/Planococcus%20minor/ (accessed 2026-11-09)
- Entomological Society of America (Journal of Economic Entomology), “Developing detection and monitoring strategies for Planococcus minor (Hemiptera: Pseudococcidae) (Roda et al. 2012, Journal of Economic Entomology 105:2052-2061).” doi.org/10.1603/ec12097 (accessed 2026-11-09)
- iNaturalist, “Planococcus minor taxon page (order and family).” www.inaturalist.org/taxa/684065 (accessed 2026-11-09)