Basically giant Cybertronian Velvet Worms, Sticklers, as they’re so-called due to their ability to trap prey with special glue they create, their feet end in cushion-like pads that have small gripping claws in the seams making their movement quiet, forward facing antennae bristling with sensory fibres and a tough rubbery body that lets them squeeze into small gaps and resist some weaponry.
Much like Earthen Velvet worms they too can make a crude 'net' out of their glue by essentially "wiggling" the streams making them cross over thus forming the "net".

The ‘net’ making ability they possess is shared with the Quintessons genetic abomination: The Dweller, this seems to confirm Stickler ‘code’ was used in it’s creation.

Oh and while it seems they only go for Mini's when hunting, it's not uncommon for them to group up in order to take down larger prey and can be a threat to bigger mechs too if they happen upon a group of hungry ones.