Hemlock Woolly Adelgid vs African Citrus Psyllid
Side-by-side species comparison
| Attribute | Hemlock Woolly Adelgid | African Citrus Psyllid |
|---|---|---|
| Scientific Name | Adelges tsugae | Trioza erytreae |
| Order | Hemiptera | Hemiptera |
| Family | Adelgidae | Triozidae |
| Size | 0.8-1.5 mm | 2-3 mm |
| Habitat | Forests | Orchards |
| Diet | Sap Feeders | Herbivores |
| Regions | Asia, North America | Sub-Saharan Africa, Madeira, Canary Islands, Iberian Peninsula (invasive) |
| Conservation | Not Evaluated | Least Concern |
Hemlock Woolly Adelgid
A devastating invasive pest of eastern hemlock in North America, originally from East Asia. It feeds at the base of needles, killing branches and eventually the tree.
Did You Know?
It has killed millions of hemlocks from Georgia to Maine since its detection in the 1950s.
African Citrus Psyllid
A small brownish psyllid that causes distinctive pit galls on citrus leaves. It vectors the African form of citrus greening disease and is expanding its range into Europe.
Did You Know?
Unlike the Asian citrus psyllid, this species prefers cooler climates and has been detected in Portugal and Spain, threatening Mediterranean citrus production.