Reintroduction of the netted carpet moth Eustroma reticulatum to Derwentwater, The Lake District, Cumbria, England

  • Published source details Hooson J. & Haw K. (2008) Reintroduction of the netted carpet moth Eustroma reticulatum to Derwentwater, The Lake District, Cumbria, England. Conservation Evidence, 5, 80-82.


The netted carpet moth Eustroma reticulatum is one of the rarest moths in the UK where it now occurs only in a few sites in The Lake District of northwest England. In the late 1990's there was a decline in its larval foodplant, touch-me-not balsam Impatiens noli-tangere; a highly isolated netted carpet colony at Derwentwater almost certainly became locally extinct because of the extreme food shortages. Subsequently the balsam recovered and an attempt was made to reintroduce the moth to this locality by translocation of 30 larvae in September 2006. However, in September 2007 the site was surveyed for larvae, but none were found. The procedure was repeated (40 larvae translocated) in September 2007 but at an alternative site at this locality where the foodplant was more abundant and conditions were considered more favourable. In September 2008, surveys revealed four netted carpet moth larvae, considered progeny of the previous year's introduction; in order to bolster this initial success, a further 150 larvae were translocated. This movement of larger numbers of larvae was possible because of their unprecedented abundance found in the actively managed donor site. Monitoring is ongoing to ascertain the longer-term success of the translocations.


Output references
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 21

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape ProgrammeRed List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Mauritian Wildlife Supporting Conservation Leaders
Sustainability Dashboard National Biodiversity Network Frog Life The international journey of Conservation - Oryx Cool Farm Alliance UNEP AWFA Bat Conservation InternationalPeople trust for endangered species Vincet Wildlife Trust