Acleris gloverana
Author(s): Todd M. Gilligan and Marc E. Epstein, CSU
Source: IPM Images
Acleris gloverana (Walsingham, 1897) - (western blackheaded budworm)
This tortrix moth is found in north-western parts of North America, where it can cause outbreaks on conifer trees, mainly on western hemlock (Tsuga heterophylla). Outbreaks have been recorded only occasionally, but they can be destructive and result in defoliation and widespread tree mortality. The species is of quarantine concern in other regions growing hemlock trees.
The overwintering eggs hatch in spring and the larvae infest the young shoots. They feed on the needles and later instars tie the needles with webbing. Pupation usually takes place at the feeding site. The adult moth has a wingspan of 15-20 mm. The name A. variana has been previously synomized with A. gloverana. However, both are separate and closely related species, with A. variana occurring in eastern parts of North America (eastern blackheaded budworm).
| Vernacular names | |
|---|---|
| • English: | western blackheaded budworm western blackheaded budworm |
| • Français: | tordeuse à tête noire de l'ouest |
Publications covering Acleris gloverana
The Canadian Entomologist (2010) 142, 458-465
V.G. Nealis, P. Silk, R. Turnquist and J. Wu (2010)
Baited pheromone traps track changes in populations of western blackheaded budworm (Lepidoptera: Tortricidae)
Environmental Entomology (2001) 30, 883-891
Roy F. Shepherd and Tom G. Gray (2001)
Comparative rates of density change in declining populations of the blackheaded budworm Acleris gloverana (Lepidoptera: Tortricidae) among different sites on Vancouver Island
- Other images of Acleris gloverana (IPM Images - click to enlarge)
genitalia
genitalia
defoliation of hemlock
