Myrmekes

Myrmekes are giant ant-like creatures that love shiny things such as gold. In Ancient Greece people believed them to live in India, where they stocked their ant hills with gold. To explain the riches of the Indian people, the legend was created, that the bravest warriors of the Indians slipped into the ant nests to recover the gold. Myrmekes are known to have tough skin, and spit acid that tenderizes there pray. Myrmekes means ants in Greek.

The Demigod Files
During a game of Capture the Flag, a swarm of Myrmekes are seen dragging the head of the Bronze Dragon across the ground to their hive. Beckendorf said that the dragon had been lost for years and tried to take the head back from the giant ants, but he is captured himself. Silena becomes very upset when she finds out and she helps Annabeth fix the Bronze Dragon that had been recently dug up. Once he is repaired, he charges toward the Myrmekes hive and causes trouble for the ants, allowing Annabeth, Silena, and Percy to rescue Beckendorf.