Spotting

Description:

small hair or fur tunnels on shade cloth. 2-3cm long

Habitat:

sunny side of shade cloth in an apartment by woodlands and swamp and coast. I doubt if they have developed a preference for shade cloth though

Notes:

The second image is from beneath the cloth and shows nothing living in the structure. It is likely to be a moth when it was present. Obviously didn't notice it before the creature matured or left to breed or was eaten