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Ars Technica

Second complete map of a fruit fly brain completed

Friday, September 4, 2026


Researchers completed a second full map of a fruit fly brain, documenting all neurons and their connections. The first complete connectome of a fruit fly brain was finished in 2020. Fruit fly brains contain approximately 3,000 neurons and 450,000 synaptic connections.

Original reporting: https://arstechnica.com/science/2026/09/brain-of-a-male-fly-completely-mapped-joins-earlier-map-of-a-female-brain/

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