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Stigmella obliquella
Willow Pigmy (Heinemann, 1862)
Nepticulidae: Nepticulinae
70 / 4.038
Photo © Raymond A Watson,  Hollesley, Suffolk. Gen Det 13 Aug 2013

Similar Suffolk Species
Sallow Pigmy
Stigmella salicis
Black-spot Sallow Pigmy
Ectoedemia intimella
Wingspan: 4-5mm.
Flight: Two Generations. May and Aug.
Foodplant:   Smooth-leaved willows.
Nat Status: Local
Verification Grade:  Adult: 4  Mine: A

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

Recent Status: Well distributed but not common across Suffolk.

Life Style: A double brooded species flying during April, May, July and August. The larvae mine leaves of Salix fragilis, S, alba, S, viminalis, S. babylonica, S. purpurea and S. pentandra. They pupate in a dark brown cocoon on a leaf or on the ground.

Identification: A coarse scaled moth with dark fuscous scales with a yellow base sometimes showing through, darker with a slight purple sheen near the tip. The scape, oblique fascia and cilia are yellowish white. The head tuft is orange with a paler face. The moth can be identified by breeding out from a mine or by genitalia dissection.
The larva creates a gallery that ends in a small blotch. The larva is amber with a brown head. More Info

Determination by Genitalia Examination (gen. det.) Required

Recorded in 29 (50%) of 58 10k Squares.
First Recorded in 2000.
Last Recorded in 2020.

Latest 5 Records
Date#VC10k Area
25/10/2020+26TL85 - Brockley/Alpheton
17/10/2020+26TL77 - Mildenhall
12/09/2020+25TM58 - Carlton Colville/Kessingland
05/08/2020125TM34 - Hollesley/Rendlesham Forest
15/11/2019125TM59 - Lowestoft
Further info: Stigmella obliquella
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