Food Plant: Juncus effusus (Soft Rush)

Mine: April-June

Notes: , A short gallery then widens and enters the stem where the larva feeds. Its presence is seen as it eats away the internal leayers of the stem (as shown) and feeds on the pith forming a long irregular mine. It then exits the stem and feeds ecternally on the leaves. A common sawfly (Musgrove, 2023). The oviposition site can be seen as a light brown area

Data: 20.iv.2024 Wilden, Bedfordshire VC30

Image:© Andrew Green

References:
Hering, E M (1957) - Bestimmungstabellen der Blattminen von Europa. p572, Junk
Musgrove, A.J (2023) - A review of the status of sawflies of Great Britain - Phase 2: The Athaliidae and the Tenthredinidae (excluding Nematinae). Natural England, unpublished
Robbins,J (1989) -A Provisional Atlas of the Leaf Miners of Warwickshire, p128, Warwickshire Biological Records Centre