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Stigmella hemargyrella
Beech Pigmy (Kollar, 1832)
Nepticulidae: Nepticulinae
81 / 4.055
Photo © James Emerson,  27/10/2019 - Minsmere woods

Similar Suffolk Species
Small Beech Pigmy
Stigmella tityrella
Wingspan: 5-6 mm.
Flight: April and May, and later in July and August.
Foodplant:   Beech.
Nat Status: Common
Verification Grade:  Adult: 4  Mine: L

Morley’s Final Catalogue: Not listed. The Nepticulids were not extensively studied and only 21 are listed.

Recent Status: Found in Suffolk but not common.

Life Style: A double brooded species found during April, May, July and August. The larvae mine leaves of Fagus. They pupate on the ground.

Identification: A bronze fuscous forewing becoming darker and purple tinged towards the tip especially beyond the silvery or golden irregular fascia. The thorax and collar are also dark but the head tuft and scape are light ochre. Genitalia dissection is required for identification. More Info
The mine is similar to that of S. tityrella but the ovum is laid on either side of the leaf and is not placed against the main vein in the angle with a side vein.

Determination by Genitalia Examination (gen. det.) Required

Mine: Either the leaf or a good photograph required

Recorded in 20 (34%) of 58 10k Squares.
First Recorded in 1996.
Last Recorded in 2021.

Latest 5 Records
Date#VC10k Area
21/09/2021+26TL78 - Brandon/Lakenheath
12/11/20201025TM24 - Woodbridge/Martlesham
17/10/2020+26TL87 - Barnham/West Stow
10/10/2020+25TM46 - Minsmere/Leiston
04/10/2020+26TM04 - Hadleigh
Further info: Stigmella hemargyrella
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