70.012 BF1711 - Treble Brown Spot - Geometridae - Idaea trigeminata

70.012 BF1711 - Geometridae - Idaea trigeminata - Treble Brown Spot

Adult Macro: CAT 1 - Distinctive species unlikely to be confused with others -

- click for Adult Macro Verification Guidelines

- Significant Record / Very Rare / Vagrant

Taxonomy: Macro >> Geometridae

ID Difficulty: green

- easy to identify, generally distinctive and unlikely to be confused with other species.

ID pointers: Unmistakable and strikingly marked – as the name suggests, there are three brown spots in the lower area of the trailing edge of the forewing.

Distribution: (First record: 1980 ) - (Last record: 26/07/2023 at Darwin Forest, Matlock ) - Current status unknown possibly a vagrant – 1 record in 1980. During recent moth record verification, two 2023 records were discovered from Darwin Forest, near Matlock by Dave Evans. One on 26/07/2023 & one on 27/7/2023. Possible re-catch of the same moth. These are the first reported since 1980.

Flight Period: May / June / July / - On the wing – May – July

Moth Activity: Nocturnal - and is attracted to light

Wingspan: 23-25mm
Forewing: 10-11mm

Food Plant: Knotgrass and Ivy.

Last Recorded Date: 26/07/2023

Last Recorded By: Dave Evans

Last Recorded General Area: Darwin Forest, Matlock

First Recorded Year: 1980

Treble Brown Spot – Idaea trigeminata

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