Morley’s Final Catalogue: Local in England, on Carex in marshes. Lowestoft (Bd); Beccles (Winter of Aldeby); Brandon (Barrett), Lakenheath Warren marshes, swept on 25 July 1937 (Mly).
Recent Status: A scarce species in Suffolk.
Life Style: A single brooded species that flies from May till August. The larvae mine leaves of Carex species, particularly C.acutiformis, C. paniculata and C. vesicaria. They pupate on the foodplant supported by a silken girdle.
Identification: This species is one of four Elachista species, E. scirpi, E. eleochariella, E. utonella and E. albidella that unless a near perfect specimen is available cannot reliably be identified without genitalia dissection. More Info They all have an elongate dark spot at around two fifths above the dorsum on a pale wing marked with ochre. More Info The larva of E. utonella is green with a dark brown head and paler prothoracic plate. They create a short mine occupying half the width of a leaf which is commonly around mid-length in the leaf.
Determination by Genitalia Examination (gen. det.) Required
Recorded in 7 (12%) of 58 10k Squares. First Recorded in 1937. Last Recorded in 2020. Additional Stats