Swarm, Scarab Beetle (CR 10)

Medium Vermin (Swarm-Fine)
Alignment: Always neutral
Initiative: +2 (Dex)

AC: 18 (+2 Dex, +6 natural), touch 12, flat-footed 16
Hit Dice: 15d8+60 (127 hp)
Fort +13, Ref +7, Will +6
Speed: 30 ft., burrow 30 ft.
Space: 10 ft./0 ft.
Base Attack +11; Grapple -
Attack: Swarm
Full Attack: Swarm
Damage: Swarm 5d6 plus desiccate
Special Attacks/Actions: Desiccate, distraction (DC 21)
Abilities: Str 1, Dex 15, Con 18, Int -, Wis 12, Cha 4
Special Qualities: Superior swarm, swarm traits, vermin traits
Feats: -
Skills: -
Climate/Terrain: Any desert and underground
Organization: Solitary or army (3-8 swarms)
Treasure: 50% coins, 50% items (not organic)

Source: Fiend Folio

Usually found in the depths of underground crypts, scarab beetles exist in huge numbers.

They consume flesh and organic material with blinding speed, making them ideal guardians of tombs, mausoleums, temples, and treasuries. Unless it is sealed in an airtight sarcophagus, scarab beetles will consume the body that they were meant to protect.

Scarab beetles are beautiful to look at, with shiny black carapaces high-lighted in turquoise, red, and yellow. Scarab beetles have keen, powerful pincers that can slice through flesh and bone with ease.

Scarab beetles dig holes and tunnels near piles of offal and decomposing organic material. Through their consumption of carrion and the like, scarab beetles speed the reintroduction of decaying organic material into the environment.

Fortunately, scarab beetles are not very fond of sunlight or intense heat, and they do not venture out onto the sweeping sands for long. At most, they attack any animal unfortunate to stumble across their lair before retreating back into the cool shadows.