70.012 BF1711 – Treble Brown Spot – Geometridae – Idaea trigeminata test

70.012 BF1711 - Geometridae - Sterrhinaer - Idaea trigeminata - Treble Brown Spot - (Haworth, 1809)

- Significant Record / Very Rare / Vagrant

ID Difficulty: amber

- care required in the identification process, as confusion with similar species is likely - quality photographs required.
Confusion Species: Single Dotted Wave

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: 12/06/2023 ) - (Last record: 27/06/2023 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

Wingspan: 23-25mm.

Food Plant: The caterpillars feed on ivy (Hedera), knotgrass (Polygonum) and other low-growing plants.

Last Recorded Date: 27/06/2023

Last Recorded By: Dave Evans

Last Recorded General Area: Darwin Forest, Matlock

First Recorded Date: 12/06/2023

Treble Brown Spot – Idaea trigeminata

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