Insect · GBIF taxon 1325405
California Harvester Ant
Pogonomyrmex californicusDeep beneath the arid soils of North American deserts, California harvester ant colonies build extensive underground networks marked by broad, cleared nest entrances. Worker ants gather seeds from native grasses and wild forbs, storing them in subterranean granaries that sustain the colony through hot dry summers. These fiery red insects are famous for their remarkably potent sting, which they use to defend their mounds against intruders.
Desert DwellerSeed HarvesterVenomous
1 / 7—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & prey
- Grass seeds
- Wildflower seeds
- Dead insects
Predators
- Horned lizards
- Antlions
- Spiders
ThreatsUrban development, habitat degradation, invasive ant competition
HabitatsDeserts, chaparral, sandy scrublands, arid fields
Life spanQueens up to 20 years; workers 1 to 2 years
Size / weightNot available
Classification
- FamilyFormicidae
- SpeciesPogonomyrmex californicus
Range data is not available yet.
Interaction riskVery high
- Low
- Moderate
- High
- Very high
- Why interaction risk is very high
- Delivers an intensely painful sting; observe nest mounds from a safe distance.
- Why it is dangerous
- Injects potent venom containing peptides and enzymes that cause lingering intense pain, swelling, and potential allergic reactions.
- How to recognize a risky encounter
- Recognize by their bright reddish-orange body color and large, circular cleared areas surrounding nest entrances in sandy soil.
- What to do
- Give nest mounds a wide berth, and never sit or stand near active foraging trails.
Responsible observation
- Watch your step: Avoid standing on cleared circular patches of earth in desert scrub where subterranean nests lie.
- Observe seed trails: Follow worker trails from a few feet away to watch them carry heavy seeds back to subterranean granaries.
Predator Patrick Alexander from Las Cruces, NM / CC0 · cc0
Close Relative no rights reserved, uploaded by Philipp Hoenle · cc0
Close Relative (c) Jonghyun Park, some rights reserved (CC BY), uploaded by Jonghyun Park · cc-by
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