Hi to all

I have a staghorn that has what appears to be a borer....sawdust type bits
and pieces at the base of the fronds, but also has about 1cm size bits of
the fronds that have been cut and dragged towards the base of the fronds ,
loosley stuck together with some web type material... What do i have? Is it
a borer? Anyone know how to treat?

Cheers

Sam