Swarm, Army Ant - World-Disk SRD

Stat block

AC20 (touch 20, flat-footed 18)HP49 (11d8)SavesFort +7, Ref +5, Will +3Meleeswarm (3d6)Speed30 ft., climb 30 ft.AbilitiesStr 1, Dex 15, Con 10, Int -, Wis 10, Cha 2BAB / CMB / CMD+8 / +0 / 0Sensesdarkvision 60 ft., scent; Perception +4Environmentany tropical

immune weapon damage

Combat brain - every behavior cites its line (1 rules)

Built only from this entry: stat-block special attacks, the printed Int score, the creature type, its feats and senses, and the behavioral prose of its own description. Nothing invented - an uncited behavior is a test failure.

mindless (from intelligence)
Int - (no Intelligence score)

On-hit riders and breath

clingDC 15 Fortitude

consumeDC 15 Fortitude

distractionDC 15 Fortitude

From the entry

If a creature leaves an army ant swarm's square, the swarm suffers 1d6 points of damage to reflect the loss of its numbers as several of the crawling pests continue to cling tenaciously to the victim. A creature with army ants clinging to him takes 3d6 points of damage at the end of his turn each round. As a full-round action, he can remove the ants with a DC 17 Reflex save. High wind or any amount of damage from an area effect destroys all clinging ants. The save DC is Dexterity-based. An army ant swarm can rapidly consume any creature it swarms over. Against helpless or nauseated targets, an army ant swarm attack deals 6d6 points of damage. The notoriety of the army ant swarm is well earned. Constantly on the march, a hive of army ants is capable of eating anything that gets in the way of its unabating swath of destruction and ruin.