Plocamaphis flocculosa
(Weed, 1891)
Large Waxy Willow Aphid
Plocamaphis flocculosa is a large known for its conspicuous waxy covering. It is specialized on willows (Salix species) and produces dense flocculent wax secretions that give it a distinctive woolly appearance. The species is native to North America and has been introduced to parts of Europe, where it has established . Its directly references the characteristic waxy filaments that coat the body.
Pronunciation
How to pronounce Plocamaphis flocculosa: /ploʊˈkæməfɪs flɒˈkluːləsə/
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Identification
Large body size relative to most aphids; dense white flocculent wax covering the entire body, forming long filamentous strands; found on willow branches and twigs. Distinguished from other waxy aphids by the combination of large size, specific association with Salix, and the particular texture of wax filaments.
Habitat
Associated with willow trees (Salix ), particularly on branches and twigs; found in riparian areas, wetlands, and other where willows grow.
Distribution
Native to North America; introduced and established in parts of Europe including Belgium, Norway, and Sweden.
Host Associations
- Salix - primary Specialized on willow ; specific range within Salix not fully documented
- Salix alba - Observed in Europe
Behavior
Produces copious amounts of flocculent wax secretions that cover the colony; wax likely serves protective function against and environmental conditions.
Similar Taxa
- Prociphilus tessellatusAnother woolly aphid on willows; P. flocculosa distinguished by larger size and more extensive, denser wax filaments
- Tuberolachnus salignusLarge willow without waxy covering; P. flocculosa immediately recognizable by dense white wax