35.137 Caryocolum tricolorella (Haworth, 1812)

Status and Distribution

Local over much of England and Wales, occasionally locally common. Extends up to the border with Scotland on the eastern side of England but is apparently absent from Cumbria and Scotland. Rare in Ireland and absent from the Isle of Man and the Channel Islands.

National Status: 

Local

Bradley & Fletcher no: 

834
Photo courtesy of UK Moths.
Photographer: John Murray
Location: Marshalls Heath, Wheathampstead, Hertfordshire

Provisional Map

Maps updated with all data received by February 2018.

    Imago

    Caryocolum tricolorella (Photo: J Clifton)  Caryocolum tricolorella (Photo: J Girdley)  Caryocolum tricolorella bred Greater Stitchwort 2014 (Photo: P Clement)  Caryocolum tricolorella bred Lancs 2016 (Photo: B Smart)   Caryocolum tricolorella Lancs 2016 (Photo: B Smart)

    Larva

    Caryocolum tricolorella larva (Photo: R J Heckford)  Caryocolum tricolorella larva 2014 (Photo: P Clement)  Caryocolum tricolorella larva (Photo: B Smart)

     

    Set Specimens

    Caryocolum tricolorella, Cumbria 2016 (Photo: S M Palmer)

    Dissection Group

    Foodplant and Larval Feeding Signs

    Caryocolum tricolorella feeding sign (Photo: Ben Smart)

    Stellaria holostea (greater stitchwort), see plant distribution map.

    In Europe also recorded on Stellaria alsine = uliginosa (bog stitchwort) and Cerastium arvense (field mouse-ear).

    Starts with a gallery-like leaf mine, later inside buds or spinning shoots together.

    Foodplant Map

    Habitat

    Deciduous woodland edges, open woodland, hedgerows and sheltered, shaded banks.

    In Europe said to have a particular association with oak woodland. 

    Finding the Moth

    Larva: initially makes gallery-like mines in the leaves during the winter (December and January) later feeding in the buds or spun terminal shoots well into May in some years. Can be common when searched for as a larva in the right habitat.

    Adult: attracted to light and to sugar.

    Similar Species

    Its larger size and the large rounded triangular black block on the costa of the forewings, contrasting with the light orange-brown base and dorsum make this one of the more readily identifiable members of this genus. Scrobipalpa costella does have a similarly shaped marking on the forewing but lacks the orange ochreous dorsal area.

    Larval Occurrence

    Larval Occurrence

    Flight Period

    Flight Period

    Single brooded from mid-/late July to early September.

    Earliest: 3rd June 1996 (VC67) which is exceptionally early.

    Latest: 13th September 1991 (VC66)