Species Account

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Summary Data

Season (Adult / Immature):

National Status: Nb

Local Status: Scarce and thinly distributed resident.

Local Record: Grade 3   See here for explanation

Flight time: Oct-Nov, overwinters to Spring.

Forewing: 14-16mm.

Foodplant: Various deciduous trees including apple, Oak and Sallow.

IMPORTANT - Please note that the maps and accounts are provisional, subject to change and further update.  The whole dataset still needs to go through the final verification process and it is likely that a very small number of records will not satisfy the present requirements and there are other records that have not been formally submitted.  The information is for guidance only.

Record breakdown:

Year first recorded188319851883
Year last recorded201120072011
Number of records31219662
Number of individuals45721956
Unique positions835176
Unique locations694146
Adult records31019658
Immature records000

For the region, we have a total of 662 records from 146 sites. Earliest record on file is in 1883.


2260 Dotted Chestnut 06
© Julian Francis
2260 Dotted Chestnut 05
© Will Bown
2260 Dotted Chestnut 04
© Les Hill
2260 Dotted Chestnut 03
© Vince Giavarini, 23 Feb 2012
2260 Dotted Chestnut 02
© Phyl England 28 Mar 2010
2260 Dotted Chestnut 01
© Tom Morris

Species Account

For further information refer UK Moths.

Davey, P., 2009: A local species confined mainly to southern England, the larval foodplant is unknown but abroad the caterpillar has been found on apple (Malus spp.), blackthorn (Prunus spp.), sallow (Salix), oak (Quercus spp.) and hawthorn (Crataegus monogyna). In Dorset, the moth is at low density across a range of biotypes and soil types. It is most often trapped on clay soil and least on chalky soil (see graphic). One locality favoured by the moth and a potential 'hot-spot' is Furzebrook, where more than one hundred were trapped between 1972 and 1976. This locality is surrounded by damp deciduous woodland, and is situated on clay soils sandwiched between open heathland to the south of Wareham and calcareous grassland on the Purbeck Ridge. The moth was found to be a frequent visitor to ivy blossom at Corfe Castle a few kilometers from Furzebrook and on similar geology; thirty-three moths were observed here between 1891 and 1895. A far more open-habitat locality where the moth is seen fairly regularly (forty-three moths in fourteen out of seventeen years) is West Bexington, a coastal grassland habitat containing an abundance of blackthorn scrub. The records indicate a nine-fold increase in numbers during the spring on average, suggesting perhaps that a large percentage of the population have a post-winter emergence.

There are indications that the moth may be an occasional immigrant to the county. The following examples trapped at light were observed in coastal localities during notable immigration events; the 2000 date is a remarkably late one for this species: Walditch, on 15 March 2002 (M Parsons), Portland, on 21 June 2000, 11 February 2004 (M Cade), Durlston, on 4 April 1999 (S Nash). The moth occurs locally throughout Europe but is absent from southern Iberia.

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