35.155 Altenia scriptella (Hübner, 1796)

Status and Distribution

Very local and restricted to southern England, from Somerset to East Anglia and in Herefordshire and Worcestershire - rarely noted on more than a few occasions each year. Formerly recorded (not since at least 1930) in Shropshire, Yorkshire and Cornwall. A record from north Cumbria requires confirmation and one from Perthshire is considered a misidentification of Carpatolechia alburnella.

The record displayed on the provisional distribution map for the Isles of Scilly is in error (St. Agnes, pre 1906) and relates to St. Agnes in Cornwall (SW75). This will be rectified in the next map refresh due in mid-2017.

National Status: 

Nationally Scarce A

Bradley & Fletcher no: 

766
Photo courtesy of UK Moths.
Photographer: O. Wadsworth

Provisional Map

Maps updated with all data received by February 2018.

    Imago

    Larva

    Altenia scriptella larva (Photo: O Wadsworth)

    Dissection Group

    Foodplant and Larval Feeding Signs

    Altenia scriptella on field maple (Photo: O Wadsworth)

    Acer campestre (field maple), see plant distribution. In Europe also recorded on Acer pseudoplatanus (sycamore) and Acer platanoides (norway maple).

    Spins the edge of a leaf upwards.

    Foodplant Map

    Habitat

    Associated with hedgerows in open country and edges of woodland.

    Finding the Moth

    Larva: folds a leaf flatly, upperside inmost, by means of bands of silk spun upon silk. Feeds on the upper epidermis and upper parts of the parenchyma without making any conspicuous blotches and readily changes to a new leaf. Shows a preference for the lower branches of saplings growing in hedgerows or at the margin of woods.

    Adult: rests on tree trunks and fences during the day and later comes to light.

    Similar Species

    The usual form with the forewings showing an obvious whitish apical quarter and variable ammounts of blackish brown across the inner three-quarters are unlikely to be confused with any other species except possibly some darker marked forms of Carpatolechia alburnella. In that species segment two of the labial palps is white, whereas the whole of the palps in A. scriptella are ringed greyish white and dark. In more grey coloured specimens, the presence of a series of raised scales in the centre of the forewing and a distinctive yellowish sub-costal streak (parallel to and just below the leading edge) are characteristic.

    Larval Occurrence

    Larval Occurrence

    Flight Period

    Flight Period

    Single brooded during June and July, occasionally into early August.

    Earliest: 22nd May 2015 (VC12)

    Latest: 17th August 1998 (VC13)