Tuberolachnus salignus
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Author(s): Mariusz Sobieski
Source: IPM Images
Tuberolachnus salignus (J.F. Gmelin, 1790) - (giant willow aphid)
This aphid is a pest of certain types of willows and has an almost cosmopolitan distribution where willows are grown. It appears to be native to Europe and Asia but has colonised various other regions. For example, it has been recorded from North America since the 1870s and from Australia and New Zealand since 2013/14.
T. salignus lives mainly on different species of willows, rarely on poplars, sucking the branches and stems. It reproduces only by parthenogenesis and an average generation lasts only 2-3 weeks. The colonies can become large, affecting the growth of roots and shoots (Collins et al., 2001). The colonies are tended by ants and visited by other insects which collect the abundant honeydew produced by the aphids.
| Vernacular names | |
|---|---|
| • Deutsch: | große Weidenrindenlaus |
| • English: | giant willow aphid |
| • Français: | puceron géant du saule |
The adults are among the largest aphids with a length of 5-6 mm. They are dark brown and the antennae are relatively short. The abdomen has several rows of black patches and the whole body is covered with fine hair giving them often a greyish appearance.
- Other images of Tuberolachnus salignus (IPM Images - click to enlarge)
adults on Salix
adults on Salix
