This insectoid creature resembles a vaguely-humanoid scorpion without a stinger. It has scythe-like blades instead of pincers and a row of spines along its back.
AC 22, touch 10, flat-footed 20 (+2 Dex, +12 natural, –2 size)
Speed 40 ft., burrow 20 ft.
Str 23, Dex 15, Con 20, Int 3, Wis 13, Cha 6
Environment temperate or warm hills
Receptive (Ex) A hivespawn doesn't speak or understand any language, but creatures with telepathy can use that special quality to communicate with hivespawn as if they had a language.
Spines (Ex) A hivespawn can loose a number of dart-like spines indicated in its ranged attack from its body as a standard action with a toss of its head or a lash of its tail. Make an attack roll for each spine—all targets must be within 30 feet of each other. The spines have a range increment of 120 ft. The creature can launch only 24 spines in any 24-hour period.