Fauna
Insect

Hyatt's Big-headed Ant

Pheidole hyatti

Hyatt's big-headed ants feature a pronounced dimorphic worker caste, with massive-headed major soldiers operating alongside smaller minor workers. Minors scout trails and collect grass seeds or scavenge dead arthropods, while the heavy-jawed majors crack tough seed husks and defend subterranean tunnels. Colonies thrive in arid to semi-arid landscapes, typically excavating chambers beneath rocks or establishing low crater mounds in open, sun-baked soil.

DimorphicHarvesterSubterranean
Hyatt's Big-headed Ant reference
(c) Jake Nitta, some rights reserved (CC BY), uploaded by Jake Nitta · cc-by
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preyPlant seeds, Insect carrion, Floral nectar
Predators
  • Horned lizards
  • Wolf spiders
  • Predatory beetles
ThreatsHabitat urbanization and competition from aggressive invasive ants
HabitatsArid grasslands, desert scrub, oak woodlands, and disturbed soils
Life spanQueens 2–5 years; workers several months
Classification
  1. OrderHymenoptera
  2. FamilyFormicidae
  3. GenusPheidole
  4. SpeciesPheidole hyatti
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
Responsible observation
  • Trail Finding: Watch for distinct foraging lines connecting small soil crater mounds to seed sources.
  • Rock Turning: If gently flipping rocks to observe brood chambers, replace them carefully to preserve moisture.
Related species
Help improve the field guideSomething wrong?

Report a name, category, or profile issue for review.

Checking your Fauna account…