( Latin: Cerambycidae )
These are mostly quite large beetles, often with very long antennae.
The larvae of the different species, which are difficult to distinguish from one another, are pale, plump, rather flat, and broadest towards the head which has powerful, dark jaws.
The females lay their eggs in bark crevices or splits in the timber, and the larvae feed on the wood. Their development may take several years. When fully grown each larva prepares an enlarged pupal chamber, often lined with coarse wood fibres, in which it pupates and later metamorphoses to the adult beetle.
The different species vary widely in their choice of timber. Some can thrive only in hardwood, others exclusively in softwood, some attack fresh, newly felled timber, while there are certain species which re- quire timber that has been damaged by damp.