The Moths of Suffolk
629 Biselachista utonella, (Frey, 1856)

National Status : Nationally Scarce B

Local Status : Resident (SMP Status 3)

Distribution and abundance : Rare

Habitats : Wet bogs and acid heaths

Flight Period : Single-brooded, May to mid-July

Larval foodplants : Various sedges (Carex), especially Lesser Pond-sedge (Carex acutiformis), Greater Tussock-sedge (Carex paniculata) and Bladder Sedge (Carex disticha). On the continent also reported from Brown Sedge (Carex disticha) and Glaucous Sedge (Carex flacca). Mining the leaves

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).

Wingspan details : Wingspan 8-9mm

Identification

Confusion species
    AdultElachista maculicerusella
Biselachista eleochariella
Biselachista utonella
Biselachista albidella
    Leaf-mineElachista biatomellaElachista kilmunella
Elachista alpinellaElachista nobilella
Elachista humilisElachista bisulcella
Biselachista cinereopunctellaBiselachista serricornis
Biselachista eleochariellaBiselachista utonella
Biselachista albidella

Compare confusion species
    Adult
    Leaf-mine

Flight chart
JFMAMJJASOND
100

Life history chart
JFMAMJJASOND
larva larva larvapupaimago pupaimago imago no datano datano datano datano data

Further Photographs

Click to view full size image
Confirmed by dissection by Jon Clifton - Ipswich, Suffolk (31.vii.2013) © Neil Sherman