Barred tooth-striped moth (Trichopteryx polycommata)

Barred Tooth-striped caterpillar
Barred Tooth-striped caterpillar

Barred tooth-striped moth fact file

Barred tooth-striped moth description

KingdomAnimalia
PhylumArthropoda
ClassInsecta
OrderLepidoptera
FamilyGeometridae
GenusTrichopteryx (1)

The Barred Tooth-striped is a greyish coloured moth. The caterpillars are green with two white lines and a dark central line passing along the back. There is also a white line along the sides (4).

Size
Wingspan: 3.3- 3.6 cm (2)
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Barred tooth-striped moth biology

Adults are on the wing from mid-March to mid-April and fly at night. Further north, the adults emerge slightly later on in the year. The caterpillars hatch from the eggs laid by the adults, and are active between May and June; the pupal stage then develops, and overwinters (2). The adults emerge the following spring, starting the cycle once again. This type of life-cycle takes a year to be completed, and is known as 'single-brooded' or 'univoltine', as a single generation or brood is produced during that time.

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Barred tooth-striped moth range

Although this scarce moth has a wide distribution in the UK, it occurs only locally. Good populations are known in south Cumbria, Breckland and the Hampshire/ Wiltshire border (3). A handful of populations occur elsewhere in southern England (3), and the range reaches through central Europe to Russia (4).

You can view distribution information for this species at the National Biodiversity Network Gateway.

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Barred tooth-striped moth habitat

Found in clearings and rides in woodlands with calcareous or clay soils and in calcareous downland. In all habitats there must be a supply of the larval foodplants, wild privet (Ligustrum vulgare) or ash (Fraxinus excelsior) (3).

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Barred tooth-striped moth status

Classified as Nationally Scarce in Great Britain (3).

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Barred tooth-striped moth threats

On downland, the species has suffered as a result of habitat loss and scrub invasion due to inappropriate management. New methods of woodland management have caused problems by removing the foodplant during timber extraction. Woodland clearings and rides can become overgrown and the foodplant shaded out following abandonment or neglect (3).

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Barred tooth-striped moth conservation

The Barred Tooth-striped moth is a priority species under the UK Biodiversity Action Plan (UK BAP), and the Species Action Plan produced aims to maintain all known populations, with enhancement of these populations by the year 2010 (3). A number of colonies occur within existing Sites of Special Scientific Interest (SSSIs) and nature reserves (3). Suggested measures to help the species include appropriate habitat management, surveying, monitoring and ecological research (3).

View information on this species at the UNEP World Conservation Monitoring Centre.

There may be further information about this species available via the National Biodiversity Network Gateway.

The UK Biodiversity Action Plan for this species is available at UK BAP.

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Find out more

Further reading on moths:
Leverton, R. (2001) Enjoying Moths. Poyser, London.
Skinner, B. (1984) Moths of the British Isles. Penguin Books, Harmondsworth

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Authentication

Information authenticated by Adrian Spalding.

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Glossary

Calcareous
Containing free calcium carbonate, chalky.
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.
Pupal stage
Stage in an insect's development, when huge changes occur that reorganise the larval form into the adult form. In butterflies the pupa is also called a chrysalis.
Rides
The footpaths and access tracks which run through and divide blocks of trees in woodland. Many rides contain a mixture of rich flora and structure, and provide different habitat conditions for a range of wildlife.
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. National Biodiversity Network Species Dictionary ( January 2003) http://www.nhm.ac.uk/nbn/
  2. Skinner, B. (1884) Moths of the British Isles. Penguin Books, Harmondsworth.
  3. UK BAP Species Action Plan (December 2001): http://www.ukbap.org.uk
  4. South, R. (1961) Moths of the British Isles. Frederick Warne and Co. Ltd, London.

More »Related species

Chalk carpet moth (Scotopteryx bipunctaria cretata)Straw belle moth (Aspitates gilvaria gilvaria)Netted carpet moth (Eustroma reticulatum)Dingy mocha moth (Cyclophora pendularia)Essex emerald moth (Thetidia smaragdaria maritima)Bright wave moth (Idaea ochrata cantiata)Waved carpet moth (Hydrelia sylvata)Sussex emerald moth (Thalera fimbrialis)

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Image credit

Barred Tooth-striped caterpillar  
Barred Tooth-striped caterpillar

© David Green / British Butterfly Conservation Society Ltd

Butterfly Conservation
Manor Yard
East Lulworth
Wareham
Dorset
BH20 5QP
United Kingdom
Tel: +44 (0) 1929 400 209
info@butterfly-conservation.org
http://www.butterfly-conservation.org/

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