# The wasps that horrified Darwin reveal evolution's one-way streets

Source: [Biology News - Evolution, Cell theory, Gene theory, Microbiology, Biotechnology](https://phys.org/news/2026-11-wasps-horrified-darwin-reveal-evolution.html) · 2026-11-06 · Life
Page: https://themorning.science/story/the-wasps-that-horrified-darwin-reveal-evolution-s-one-way-streets-8c0ff908a4f5ea67

Few insects have a more gruesome lifestyle than Darwin wasps. Rather than simply hunting other animals, these parasitic wasps lay their eggs on or inside living hosts, including caterpillars, beetles and spiders. Their larvae then feed on their hosts, gradually consuming them and…

## Coverage

- [The wasps that horrified Darwin reveal evolution's one-way streets](https://phys.org/news/2026-11-wasps-horrified-darwin-reveal-evolution.html) — Biology News - Evolution, Cell theory, Gene theory, Microbiology, Biotechnology, 2026-11-06
- [Directional evolution of parasitoid strategies and contingent host shifts shape the radiation of Darwin wasps (Ichneumonidae)](https://www.cell.com/current-biology/fulltext/S0960-9822(26)01415-6?rss=yes) — cell.com, 2026-11-06

---

Brief generated by AI (–) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Science – https://themorning.science