2021 is the year I discovered 35 new species of moth in our back garden

UPDATE: The Sprawler turned up in early November, bringing the total up to 36 new for the garden in 2021. No December moth yet, at the time of writing, sadly.

These Lepidoptera were all new for my back garden in Cottenham drawn to a 40 Watt ultraviolet “actinic” lamp on the night noted. Any of dubious ID I had confirmed from a photo by Sean Foote better known on Twitter as @MothIDUK to whom I am very grateful for the assistance and have put a tip in his tip jar.

The 35 species new for the garden in 2021 are as follows

7/3/21 – The Satellite
20/4/21 – Agonopterix purpurea* (To Myo lure)
10/5/21 – Esperia sulphurella
31/5/21 – Mottled Pug
2/6/21 – Brown Silver-line
4/6/21 – Hypena rostralis
4/6/21 – Buttoned Snout
6/6/21 – Aethes tesserana
6/6/21 – Red-belted Clearwing*
12/6/21 – Currant Clearwing*
13/6/21 – Yellow-legged Clearwing*
13/6/21 – Argyresthia curvella
14/6/21 – Red-tipped Clearwing*
16/6/21 – Orange-tailed Clearwing
24/6/21 – Hedya salicella
25/6/21 – Mompha ochraceella
4/7/21 – Aleimma loeflingiana
4/7/21 – Cnephasia agg.
11/7/21 – Plain Pug
15/7/21 – Dark Umber
19/7/21 – Raspberry Clearwing*
24/7/21 – Leek Moth
24/7/21 – Scarce Silver-lines
2/8/21 – Dewick’s Plusia (I’d only seen this moth previously in Greece)
4/8/21 – Helcystogramma rufescens
9/8/21 – Toadflax Brocade (Had larva in the garden in 2019)
19/8/21 – Yellow Belle
21/8/21 – Tawny-barred Angle
22/8/21 – Common Wave
23/8/21 – Udea lutealis
24/8/21 – Square-spot Rustic
1/9/21 – Aethes smeathmanniana
5/9/21 – Swammerdamia pyrella
19/9/21 – Beet Moth
10/10/21 – Acleris schalleriana
9/11/21 – The Sprawler

*Drawn to pheromone lure during the day, rather than actinic light at night. If non-target then pheromone is named

Numbers were very much down on my previous three seasons of trapping, never getting to more than a couple of hundred moths on any given lighting-up night and usually of 30-40 species on such nights. When I last counted (2/9/21) I’d seen about 4760 moths of 260 species. In 2019, I counted 12000 specimens and hadn’t lit up anywhere near as frequently in that year as I have during 2021. Early to mid-September got quite busy with a lot of Large Yellow Underwings and Setaceous Hebrew Characters etc.

The spring was cold and wet, summer was a bit of a washout too, but we had two or three warm spells in September.

Dewick’s Plusia
Common Wave
Scarce Silver-lines
Yellow-legged Clearwing