Tuesday 18 June
White spot moth (Hadena albimacula)
White spot moth fact file
- Description
- Biology
- Range
- Habitat
- Status
- Threats
- Conservation
- Find out more
- Glossary
- References
- Print factsheet
White spot moth description
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Class | Insecta |
| Order | Lepidoptera |
| Family | Noctuidae |
| Genus | Hadena (1) |
This species is easily recognised by the large white spots on the forewings, referred to by both the common and scientific names (albimacula derives from the Latin 'albico'- to be white and 'macula'- spot). The hindwings are brown in colour, becoming darker towards the edge (3).
- Size
- Wingspan: 30 - 39 mm (1)
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White spot moth biology
This species is usually single-brooded; the adults are active between mid-May and July, but there is some evidence of a second brood (4). The caterpillars feed on the seed capsules of the Nottingham catchfly (2) between July and August and the overwintering stage is the pupa (1). The foodplant has sticky stems, hence the common name 'catchfly' (5), and once grew in abundance on the walls of Nottingham Castle and the surrounding castle rock (5). It was first given its present name in 1770 (5), and is currently widespread but local and grows on shingle or rocky cliffs with sparse soil (6).
TopWhite spot moth range
Populations of the white spot moth are currently known in Dungeness in Kent, near Gosport in Hampshire, and on the south coast of Devon. Over the last 25 years, the range of the species in Devon has declined to a great extent. Although it could be described as 'abundant' in Dungeness (4), all current populations are vulnerable. The species is known from most European countries (2).
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Species with a similar range
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You can view distribution information for this species at the National Biodiversity Network Gateway. |
White spot moth habitat
Inhabits shingle beaches and calcareous cliffs where the foodplant of the caterpillars, Nottingham catchfly (Silene nutans) is present (2).
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Species found in a similar habitat
White spot moth status
Classified as Vulnerable in Great Britain (2).
TopWhite spot moth threats
The white spot moth is limited by the availability of its foodplant, Nottingham catchfly, which is scarce. Recreation by humans, coastal development, coastal defence work and commercial-scale extraction of shingle, gravel and sand have all put this species under pressure (2).
TopWhite spot moth conservation
The white spot moth is a UK BAP (Biodiversity Action Plan) priority species. The plan aims to maintain the present populations by considering the species with habitat action plans for coastal vegetated shingle and maritime cliffs and slopes. A regular monitoring programme has been proposed, furthermore Dungeness is a candidate SAC (Special Area of Conservation) (2).
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The UK Biodiversity Action Plan for this species is available at UK BAP. |
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View information on this species at the UNEP World Conservation Monitoring Centre. |
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There may be further information about this species available via the National Biodiversity Network Gateway. |
Authentication
Information authenticated by David Walker.
TopGlossary
- Calcareous
- Containing free calcium carbonate, chalky.
- Pupa
- Stage in an insect's development when huge changes occur, which reorganise the larval form into the adult form. In butterflies the pupa is also called a chrysalis.
- Single-brooded
- Also known as ‘univoltine’. Referring to an organism which has just one brood each year.
References
- Skinner, B. (1984) Colour Identification Guide to Moths of the British Isles. Viking Press, London.
- UK BAP (January, 2002)
http://www.ukbap.org.uk/ukplans.aspx?ID=346 - Walker, D. (2002) Pers. comm.
- Walker, D. (1998) A species profile- White Spot Hadena albimacula. Atropos, 5: 35 - 36.
- Brown, C. (1896) History of Nottinghamshire. Elliot Stock, London. Available at:
http://www.nottshistory.org.uk/Brown1896/flora2.htm - Natural England – The Plant Press (September, 2008)
http://www.plantpress.com/wildlife/o708-nottinghamcatchfly.php
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Image credit
White Spot
© Chris Manley
Chris Manley
Apple Loft
The Row
Trigon
Wareham
Dorset
BH20 7PF
United Kingdom
Tel: +44 (0) 1929 553 933
chris@manle.freeserve.co.uk
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