Insects · La Saladita, Guerrero

Band-celled Sister

Adelpha fessonia

Spanish: Hermana mexicana

Adelpha fessonia, the band-celled sister or Mexican sister, is a species of butterfly of the Nymphalidae family. It is found in Panama north through Central America to Mexico. It is a periodic resident in the lower Rio Grande Valley, Texas.

TaxonomyInsecta › Lepidoptera › Nymphalidae

Local records16 research-grade observations within about 50 km of La Saladita (the survey box also takes in Zihuatanejo, Ixtapa and Troncones)

Global records1,744 on iNaturalist

Most recent records2024 – 2026

Months of the 8 most recent records

JanFebMarAprMayJunJulAugSepOctNovDec

Recent local sightings

2026-02-20 — observation by daniel_brito
2026-01-24 — observation by zihuadean
2026-01-09 — observation by zihuadean
2025-03-04 — observation by shawneen
2025-02-18 — observation by zihuadean
2025-01-31 — observation by zihuadean

Interactive card with more photos, sounds and similar species Insects guide iNaturalist Wikipedia

Cite as: “Band-celled Sister (Adelpha fessonia) at La Saladita”, La Saladita Field Guide, lasaladita.com/species/adelpha-fessonia/, 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.