White-line snout moth (Schrankia taenialis)

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White-line snout moth
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White-line snout moth fact file

White-line snout moth description

KingdomAnimalia
PhylumArthropoda
ClassInsecta
OrderLepidoptera
FamilyNoctuidae
GenusSchrankia (1)

The White-line Snout is a small moth with brown forewings that feature two irregular black cross-lines (3). The caterpillar has not been observed in the wild (3).

Size
Wingspan: 1.8- 2.4 cm (1)
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White-line snout moth biology

A single-brooded moth, the adults are on the wing in July and early August. The caterpillars have not been observed in the wild in the UK, therefore little is known of their biology, however it seems very likely that the species spends the winter as a caterpillar (1). Thyme, cow parsley, hogweed and the flowers of heather have been suggested as the larval foodplant (2).

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White-line snout moth range

Before 1980, this moth was recorded in areas of England to the south of the Wash and south Wales. Since 1980 it has been found in just 30 of the former areas, but new sites have been discovered in Wales. This may be due to a decline in the species, or an artefact resulting from a lack of recording. Elsewhere the species is found in Israel, Korea, and central and western areas of Europe (2).

You can view distribution information for this species at the National Biodiversity Network Gateway.
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White-line snout moth habitat

Known from a number of habitat types; mainly damp deciduous woodlands but also open heathland (4).

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White-line snout moth status

Classified as Nationally Scarce (2).

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White-line snout moth threats

The causes of the poor status of the White-line Snout are not known (2).

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White-line snout moth conservation

This moth is a priority species under the UK Biodiversity Action Plan (UK BAP). The Species Action Plan aims to maintain the present range of the species and establish a monitoring programme (2).

The UK Biodiversity Action Plan for this species is available at UK BAP.
There may be further information about this species available via the National Biodiversity Network Gateway.
View information on this species at the UNEP World Conservation Monitoring Centre.
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Authentication

Information authenticated by Adrian Spalding.

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Glossary

Deciduous
Of a plant that sheds its leaves at the end of the growing season.
Larval
Of the stage in an animal's lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.
Single-brooded
(Also known as 'univoltine'). Insect life cycle that takes 12 months to be complete, and involves a single generation. The egg, larva, pupa or adult over winters as a dormant stage.
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References

  1. Skinner, B. (1984) Colour Identification Guide to Moths of the British Isles. Viking Press, London.
  2. UK BAP. Species Action Plan (December 2001): http://www.ukbap.org.uk
  3. South, R. (1961) The moths of the British Isles. Frederick Warne & Co. Ltd., London.
  4. Spalding, A. (2003) Pers. comm.
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Image credit

White-line snout moth  
White-line snout moth

© Ben Smart

Ben Smart
kathben@chorlton99.fsnet.co.uk

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