Which blue butterfly species, restricted to a few hundred hectares of threatened evergreen forest, was newly identified in Angola in December 2025?

The Iolaus francisi butterfly is indeed the blue butterfly species newly identified in Angola, with its formal recognition occurring in 2025. This striking insect, sometimes referred to as Francis's gorgeous sapphire, was discovered in the high-altitude evergreen forests of Angola's Namba Mountains. Its upper wings showcase a shimmering blue bordered with black, contrasting with silvery underwings patterned with orange and brown lines. The initial sightings of this beautiful creature by ecologists and lepidopterists date back to May 2023, with its formal description appearing in the journal Zootaxa in 2025.

The discovery of the Iolaus francisi underscores the rich, yet fragile, biodiversity of Angola's Afromontane forests. These unique evergreen habitats, covering only a few hundred hectares in the Namba Mountains, are the largest of their kind in Angola but currently lack legal protection. The butterfly's survival is intimately linked to specific mistletoe plants, which serve as food for its caterpillars. This ecological dependency makes the species particularly vulnerable to habitat degradation.

Conservationists have highlighted the urgent need to protect these threatened forests. Threats such as uncontrolled fires, timber harvesting, and especially unregulated farming are rapidly diminishing these critical ecosystems. The plight of the Iolaus francisi serves as a compelling reminder of the interconnectedness of species and their habitats, emphasizing why the identification of new species is not just a scientific achievement but also a crucial call to action for conservation efforts.