Pulvinaria floccifera

Distinguished from other Pulvinaria species by the pure white, fluffy ovisac that resembles flocking or cotton, often described as decorative or snow-like. The ovisac is typically longer than the female body. Separated from cottony cushion scale (Icerya purchasi) by host preference and ovisac structure; from other soft scales by the distinctive white flocculent wax rather than smooth or colored wax coverings.

Associated with woody landscape plants and shrubs; found on leaves and stems of broadleaf evergreens. In natural and cultivated settings including tea orchards, ornamental nurseries, and residential plantings.

Widespread globally: recorded from Europe (United Kingdom, France, Germany, Italy, Netherlands, Poland, Portugal, Spain, Sweden, Switzerland, Czech Republic, Denmark, Latvia, Romania, Russia, Ukraine, Yugoslavia, Malta, Madeira, Canary Islands, Sardinia, Montenegro, Georgia, Hungary, Greece, Turkey), Asia (China, Japan, India, Iran, Vietnam, Saudi Arabia, Turkmenistan), Africa (Egypt, South Africa), North America (United States, Canada, Mexico, Bermuda), Central America and Caribbean (Trinidad and Tobago, Jamaica), South America (Argentina), and Oceania (Australia, New Zealand, Seychelles, Faial).

In temperate regions, egg laying occurs in spring and early summer. Nymphs are present from late spring through fall and winter, completing development by the following spring. Adults emerge in spring to mate and produce ovisacs. In tea-growing regions of Iran, population monitoring occurs throughout the growing season (2008-2010 study: weekly sampling March-November).

Phloem feeder: inserts stylets into vascular tissue of host plants to extract sap.

• Camellia sinensis - hostmajor pest in tea orchards of northern Iran
• Camellia japonica - hostprimary host, common name reference
• Ilex spp. - hostholly species, significant ornamental host
• Taxus spp. - hostyew, alternative common name reference
• Callicarpa spp. - hostbeautyberry
• Jasminum spp. - hostjasmine
• Hydrangea spp. - hosthydrangea
• Euonymus spp. - hosteuonymus

Eggs are laid within the white cottony ovisac. Nymphs hatch and are initially mobile (crawler stage), dispersing across leaf surfaces before settling to feed. Nymphs pass through three instars, remaining sessile and feeding throughout summer, fall, and winter. Development completes in spring when adults emerge. Males develop wings, emerge from beneath their coverings, and fly to locate wingless females. After mating, females produce new ovisacs.

Nymphs exhibit limited dispersal as crawlers before becoming permanently sessile. Females remain fixed in place throughout adult life. Males are the only mobile adult stage, with brief flight period for mating. Aggregated spatial distribution pattern for early instars; uniform distribution for later instars and adults in tea orchard studies.

Herbivore: reduces plant vigor through sap extraction. Honeydew excretion supports growth of sooty mold fungi (Capnodium spp.), which reduces photosynthesis and aesthetic value of host plants. Serves as host for parasitoid wasps in families Encyrtidae and Aphelinidae.

Significant ornamental pest: reduces aesthetic value of hollies, camellias, and other landscape plants through presence of white ovisacs and black sooty mold. Economic pest of tea (Camellia sinensis) in northern Iran, where spatial distribution studies support integrated pest management programs. Biological control agents have been investigated and utilized.

• Pulvinaria aurantiiSimilar ovisac structure; distinguished by host preference and geographic distribution
• Pulvinaria polygoniCongeneric soft scale with cottony ovisac; requires microscopic examination for definitive separation
• Icerya purchasiCottony cushion scale produces similar white ovisac but has different body shape, host range, and produces mobile crawlers in distinct pattern; I. purchasi has more lobed body and different wax filament arrangement
• Planococcus citriCitrus mealybug produces white waxy secretions but lacks the organized ovisac structure and has filamentous body margins rather than flat oval form

The white 'flocking' on hollies is sometimes mistaken for artificial snow decoration or fungal growth; it is actually the insect's protective ovisac. The black sooty mold that often accompanies infestations is frequently blamed as the primary problem, when it is secondary to scale honeydew production.

• scale insect
• soft scale
• pest
• ornamental
• tea pest
• Coccidae
• Sternorrhyncha
• honeydew
• sooty mold
• biological control host

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Encyrtid Holdings | Entomology Research Museum
• Flocked hollies - Cottony camellia scale, Pulvinaria floccifera — Bug of the Week
• Spatial distribution of the cottony camellia scale, Pulvinaria floccifera (Westwood) (Hemiptera: Coccidae) in the tea orchards