Elachistidae
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Photo © Neil Sherman,  Purdis Farm, Ipswich. September 2020. Gen.det.

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Elachista consortella
Field Dwarf

Stainton, 1851632 / 38.048

Morley’s Final Catalogue: Not listed.

Recent Status: Recorded in Suffolk.

Life Style: The moth has two or three broods in a year. The larval food is given as Poa annua. They pupate in a dense cocoon..

Identification: There are three Elachista species of the once Cosmiotes genus that can be identified by a combination of Genitalia dissection and head colour. E. consortella male lacks a hook on the valve and the female has a short antrum narrowing abruptly. E. freyerella and E. stabilella both have a white frons but in E. stabilella the vertex becomes speckled fuscous grey. Differences in the genitalia of these species is slight and MBGBI should be referred to. The forewings are dark with white markings. There is a small spot on the base of the dorsum, a fascia at one third, opposed tornal and costal spots separated by a narrow dark bar and a narrow band at the termen. Females are darker than males. Marking may be obscure.
The larvae of these species mine a variety of grasses except that E. consortella is stated to be specific to Poa annua. The larvae are stated as having different head and prothoracic plate colour. Yellowish for E. consortella, black for E. freyerella and pale brown for E. stabilella.

Determination by Genitalia Examination (gen. det.) Required

Recorded in 3 (5%) of 58 10k Squares.
First Recorded in 2004.
Last Recorded in 2020.
Additional Stats

Elachista freyerella  |  Elachista stabilella >

Determination
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
19/09/2020125TM24 - Woodbridge/Martlesham
28/08/2008125TM17 - Eye/Hoxne
25/08/2004125TM46 - Minsmere/Leiston
Show Details | 1990 to 2020 | 2000 to 2020 | Graph Key
Express Record Elachista consortella
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Copyright © Jim Wheeler 2021
   

Wingspan: 8mm
Foodplant:   Annual Meadow-grass
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 2021. © James Wheeler - Norfolk Moths 2007 - 2021. Data © NOLA™ - Suffolk 2021
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