Fauna
Insect · GBIF taxon 1317320

Dark Rover Ant

Brachymyrmex patagonicus

Also known as Black Rover Ant, Patagonian Rover Ant

Dark rover ants form dense, multi-queen colonies that nest opportunistically in soil cavities, rotting logs, mulch beds, and building wall voids. Workers scurry rapidly in loose, erratic lines to gather honeydew produced by aphids, occasionally straying indoors in pursuit of sugary food scraps. During hot, humid summer twilights, vast numbers of winged reproductives take flight simultaneously, swarming around outdoor lights and swimming pools.

InvasiveSocial InsectUrban Wildlife
Dark Rover Ant reference1 / 7
Licensed referenceno rights reserved, uploaded by Jesse Rorabaugh · cc0
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Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & prey
  • Aphid honeydew
  • Floral nectar
  • Dead arthropods
Predators
  • Jumping spiders
  • Ground beetles
  • Anoles
ThreatsDirect pesticide applications and aggressive competition from larger ant species
HabitatsUrban landscapes, edge habitats, disturbed soil, potted plants, and residential structures
Life spanWorkers 2–6 months; queens 1–3 years
Classification
  1. OrderHymenoptera
  2. FamilyFormicidae
  3. GenusBrachymyrmex
  4. SpeciesBrachymyrmex patagonicus
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; dark rover ants do not sting, bite, or transmit disease.
Responsible observation
  • Detection: Check brick foundations, landscaping timbers, and tree trunks for fast-scurrying dark workers.
  • Exclusion: Seal gaps around exterior windows and utility pipes to prevent workers from seeking moisture indoors.
Related species
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