35.135 Caryocolum proxima (Haworth, 1828)

Status and Distribution

Rare and apparently declining, with all recent records (post 1989) from central, eastern and south eastern England and only reported from three sites since 2000. Historically it appeared to be more widespread with reports from parts of south-west, western and northern England. However, the accuracy of some of these records is in doubt due to potential confusion with other species.

National Status: 

pRDB 3

Bradley & Fletcher no: 

831

Provisional Map

Maps updated with all data received by February 2018.

    Imago

    Set Specimens

    Caryocolum proxima (Photo: R J Heckford)

    Dissection Group

    Foodplant and Larval Feeding Signs

    Cerastium fontanum (common mouse-ear), see plant distribution map, and Stellaria media (common chickweed).

    Within lightly spun shoots and seed heads.

    Foodplant Map

    Habitat

    Open grassland bordering hedgerows, weedy banks, parkland and gardens.

    Finding the Moth

    Larva: from late April to early July in an inconspicuous spinning in a shoot or within a seed capsule spun to the lower leaf with a little silk - difficult to spot.

    Adult: may be found resting on tree trunks, occasionally flies in late afternoon, flies at night and comes to light.

    Similar Species

    Can be confused with C. junctella, C. alsinella, C. viscariella and C. blandulella but is best recognised by the usually pinkish (sometimes whitish) scales on the tibia of the forelegs and especially of the mid-legs. This feature is otherwise only shared with C. junctella which usually has many white-tipped scales along the dorsum (trailing edge) of the forewing and the black costal block is less prominent. Retention of a voucher specimen is recommended should this species be suspected. The male genitalia are similar to C. blandella and the female genitalia to C. blandulella.

    Larval Occurrence

    Larval Occurrence

    Flight Period

    Flight Period

    Single brooded from mid-July to the end of August.

    Earliest: 6th July 1964 (VC25) - a few earlier records require confirmation or may refer to bred specimens.

    Latest: 2nd September 1963 (VC20)