Tickers are the smallest enemies in Earth Defense Force Insect Armageddon, first appearing without their parent in Chapter 1 Mission 2: Firebase Clyde and later with them in Chapter 2 Mission 1: Industry. They attack the enemy by latching onto their back and exploding. They are either spawned in the level or they are spawned from a Bomber Spider. They are very weak but are also extremely small, making them hard targets to shoot. The main advantage of the ticks over any other type of enemy is its great speed where they run towards you and dodge out of the way quite often.
By far the easiest way to deal with them is to use the Battle Armor's "bug zapper" special ability; since they have to get close to attack, as long as the bug zapper has power the Battle Armor is basically immune to them.
They can be removed by an ally shooting them off, using the Battle's blastwave ability, or by hitting the (Xbox 360) or the (PlayStation 3) button repeatedly to fill the onscreen bar. The higher the difficulty, the less time is available to fill the removal completion bar. Removing tickers takes precedence over all other interactions and must be completed before performing them.