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(c) Judy Gallagher, some rights reserved (CC BY)
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(c) cdhsiao, some rights reserved (CC BY-NC)
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(c) peter_yeeles, all rights reserved
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(c) Jonghyun Park, some rights reserved (CC BY)
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(c) Reynante Martinez, some rights reserved (CC BY)
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(c) suvijohn, some rights reserved (CC BY-NC)

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Longhorn Crazy Ant

Paratrechina longicornis

Worldwide: 15,798 observations
Group: Insects

About

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,...

Summary from Wikipedia, CC BY-SA 4.0.

Recent sightings near Medan

Research-grade observations within 25 km, newest first.

Dec 18, 2025Medan City, North Sumatra 20217, IndonesiaObserver: rb1View observation from Dec 18, 2025 on iNaturalist
Nov 26, 2021Medan, Kota Medan, Sumatera Utara, IndonesiaObserver: annisaclxView observation from Nov 26, 2021 on iNaturalist
Nov 25, 2021Medan, Kota Medan, Sumatera Utara, IndonesiaObserver: annisaclxView observation from Nov 25, 2021 on iNaturalist