Hym:Tenthredinidae
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Heterarthrus nemoratus (Fallén, 1808)
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dorsal view
ventral view
anal ring

 

Food Plant: Betula spp. (Birch)

Mine: Summer

Notes: The older part of the mine is characteristically a red-brown colour and the mine contains little frass as the larva ejects it through a slit. The larva pupates in the mine in a disc structure. The larva is pale in colour and the prothorax has apale plates with a median sulcus. Ventrally the prothorax has the typical Heterarthrus 'collar', with further spots on the meso and metathorax. The anal ring (bottom photo) shows the fine denticulations.

Data: 02.viii.2006, Fleet, Hants, VC12 ex mine 30/vii.2006, Etzen, Austria, Ewald Altenhofer

Image:© Rob Edmunds

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