Elachistidae
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Photo © Raymond A Watson,  Hollesley, Suffolk. Gen Det

Similar Suffolk Species
Elachista scirpi
Saltern Dwarf
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Elachista utonella
Bog Dwarf

(Frey, 1856)629 / 38.045
=Biselachista utonella

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 6 (10%) of 58 10k Squares.
First Recorded in 1937.
Last Recorded in 2019.
Additional Stats

Elachista scirpi  |  Elachista albidella >

Determination
Hollesley Suffolk. - Raymond A Watson
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
23/07/2019125TM24 - Woodbridge/Martlesham
28/07/2018125TM59 - Lowestoft
17/06/2017+25TM34 - Hollesley/Rendlesham Forest
16/07/2016126TL96 - Thurston/Elmswell
31/07/2013125TM24 - Woodbridge/Martlesham
Show Details | 1990 to 2019 | 2000 to 2019 |
Express Record Elachista utonella
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Copyright © Jim Wheeler 2020
   

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Wingspan: 8-9mm
Flight: May - July.
Foodplant:   Various sedges.
Nat Status: Nationally Scarce B
Verification Grade:  Adult: 4
 Immature Adult
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Underlying maps using Digital Map Data © Norfolk Online Lepidoptera Archive - NOLA™ - Suffolk 2020. © James Wheeler - Norfolk Moths 2007 - 2020. Data © NOLA™ - Suffolk 2020
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