Psyllid leaf galls & lerp

Description:

An unopen psyllid gall (pic #1) and an exited gall (pic #2) on a Eucalyptus leaf. Pic #3 shows the underside of the leaf with a low profile lump. Beside it was a white fibre lerp also formed by a psyllid !

Habitat:

Eucalyptus tree in a nature reserve - species not known.

Notes:

It was interesting to see both the gall and the lerp on the same leaf and next to each other. Both are formed by Psyllid insects, sap sucking Hemipterans. Gall forming psyllids live in the gall until maturity and with the lerp-forming ones, the nymphs build themselves a waxy, sugary shelter called a lerp and live under the shelter until maturity. In this case, the latter is Glycaspis species.