Holly mine - variation

Holly mine - variation

Observation - Holly mine - variation - UK and Ireland. Description: Instead of the usual blotch close to the midrib, this mine has a more linear track. The thinking here is that the larva spends too long eating in just one direction. The development of scar tissue in the leaf then effectively traps the larva and prevent

Instead of the usual blotch close to the midrib, this mine has a more linear track. The thinking here is that the larva spends too long eating in just one direction. The development of scar tissue in the leaf then effectively traps the larva and prevents it from forming the usual blotch. (Alternatively it is the North American species, Phytomyza
ilicola - not!)