Longhorn Crazy Ant
Paratrechina longicornis
Spanish: Hormiga africana loca de antenas largas
The longhorn crazy ant (Paratrechina longicornis), also known as "black crazy ant", is a species of small, dark-coloured insect in the family Formicidae. These ants are commonly called "crazy ants" because instead of following straight lines, they dash around erratically. They have a broad distribution, including much of the tropics and subtropics, and are also found in buildings in more temperate regions, making them one of the most widespread ant species in the world. This species,... Most often recorded in Jan, Dec, Feb, Apr.
- 2026-01-09 — observation by zihuadean
- 2022-12-24 — observation by zihuadean
- 2022-02-11 — observation by zihuadean
- 2022-01-02 — observation by zihuadean
- 2020-04-25 — observation by raulrambar
Interactive card with more photos, sounds and similar species Insects guide iNaturalist Wikipedia
Cite as: “Longhorn Crazy Ant (Paratrechina longicornis) at La Saladita”, La Saladita Field Guide, lasaladita.com/species/paratrechina-longicornis/, updated 2026-09-26. Observation counts and months come from iNaturalist research-grade records within about 50 km of 17.8375°N, 101.7606°W (the survey box also takes in Zihuatanejo, Ixtapa and Troncones); summary text from Wikipedia where present.