The wingless stages of Thelaxes sp. are small (1-2.3 mm) oval and brown or greenish, sometimes with a paler stripe along the back. Their rostrum is distinctive in having a long and almost needle-like last rostral segment. The cauda is knobbed and the siphunculi are very short and virtually pore-like. 

There are three European Thelaxes species which feed on the young shoots, leaves and young acorns of various Oak species (Quercus). 

Detailed photos required. 

On Oak species (Quercus). 

Uncommon or rarely recorded. 

Rarely recorded. 

https://influentialpoints.com/Gallery/Thelaxes_dryophila_Common_oak_thelaxid.htm