Morley’s Final Catalogue: Suffolk is the north-east limit of this Carex-feeder's range. Found near Thetford (Revd. H. Williams of Croxton).
Recent Status: A rare species in Suffolk.
Life Style: A single brooded species flying from June till September. The larvae mine leaves of Carex species. They hibernate and pupate on a leaf or stem of the foodplant supported by a silken girdle.
Identification: The species is sexually dimorphic with the females having yellowish white scales present on the head and ringed antennae. The males have a dark head and antennae. The markings on the female are bolder but both have variable markings. There is a white fascia at one third and a white tornal and preapical costal spot. Owing to the variability and likely confusion with a number of similar species genitalia dissection is essential for identification. More Info The larvae mine downwards in a narrow gallery. The mine of the fully grown larvae ends up low down amongst the leaves. The pale larvae have a pale brown head.
Determination by Genitalia Examination (gen. det.) Required
Recorded in 5 (9%) of 58 10k Squares. First Recorded in 1987. Last Recorded in 2023. Additional Stats
