15.017 BF296 - Gracillariidae - Gracillariinae - Calybites phasianipennella

15.017 BF296 - Gracillariidae - Gracillariinae - Calybites phasianipennella - White-marked Stilt

Adult Micro: CAT 2 - Confusion Species - Leaf-miner: CAT L - The leaf or a Photo required -

- click for Verification Guidelines

- Rare / Uncommon / Scarce - Leaf Miner

Taxonomy: Micro >> Gracillariidae

Other Name/s: Little Slender

ID Difficulty: Red

- difficult to identify - detailed examination required, often a Gen Det and/or specimen and quality photographs are required.

ID pointers: There are two forms, this one that shows four large creamy or whitish markings and the typical one that is more golden brown with a large pale dorsal streak.

Distribution: (First record: 20/08/2020 at Quarndon ) - (Last record: 13/03/2024 at Kings Newton ) - This record looks to be the 2nd for Derbys. One record from the Rothamsted trap at Grassmoor on the 13/08/2019. It occurs locally in England. This specimen was trapped in Quarndon on 20/21 August 2020 by Dan Brown who has kindly sent me the record and photographs. I’ve notified the county recorder.

Flight Period: January / February / March / April / May / July / August / September / October / November / December / - On the wing during July – Aug then September when it overwinters as an adult and can then be seen again during April and May.

Mine Period: July / August / September / - A gallery is formed which turns into a blotch, then later two conical leaf-edge rolls

Wingspan: 10-11mm

Food Plant: Dock (Rumex), knotgrass (Polygonum) and loosestrife (Lysimachia).

Last Recorded Date: 13/03/2024

Last Recorded By: Will Soar

Last Recorded General Area: Kings Newton

First Recorded Date: 20/08/2020