Zoraptera are tiny, mysterious insects that switch between blind workers and winged explorers.

Nature · Published 3 October 2026 Swipe more like this →

In short: Often called angel insects, these small, soft-bodied creatures live in secret colonies under rotting wood. They exhibit a strange polymorphism: most are blind and wingless, but when conditions turn harsh, they produce winged, sighted offspring to disperse and colonize new territories before reverting to their wingless state.

Named by Filippo Silvestri in 1913, the order Zoraptera is ironically mislabeled; the name translates to 'pure wingless,' yet the group includes winged alate forms discovered years later. These insects are remarkably small, measuring 3 millimetres or less, and possess a distinct nine-segmented beaded antenna. They are primarily detritivores, feeding on fungus and spores, and are found on most continents, though notably absent from places like Australia and Europe.

The social lives of these insects are as varied as their anatomy. In some species, such as Centrozoros gurneyi, males fight for dominance to secure harems. Others, like Latinozoros barberi, engage in complex courtship involving nuptial feeding, where the male offers a fluid from a cephalic gland to the female. The reproductive strategy of Spermozoros impolitus is particularly extreme: males transfer a 0.1-millimetre spermatophore containing a single giant sperm cell that unravels to match the female's full body length, effectively blocking other males from fertilizing her.

The evolutionary history of Zoraptera remains a subject of intense debate. While they are generally considered a basal group within the Polyneoptera, their exact placement is contested. Molecular studies, including a 2019 analysis, have suggested they are the sister group to earwigs (Dermaptera), while a 2026 study proposed they represent the earliest diverging lineage of the entire Polyneoptera order. Their fossil record, dating back 130 to 125 million years to the Cretaceous period, indicates that these insects were once more widely distributed than they are today, likely originating in the tropical latitudes of the ancient supercontinent Pangaea.

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