Overview
- Researchers recorded substrate‑borne vibrations from nine butterfly caterpillar species and two ant species collected across Northern Italy.
- The most ant‑dependent caterpillars produced highly regular rhythms that closely matched ant patterns to secure protection, food, and nest adoption.
- Two shared traits characterized the signals: isochrony with evenly spaced pulses and a double meter of alternating long and short intervals.
- Species with weaker or no associations with ants generated simpler or more irregular rhythms, linking myrmecophily to rhythmic complexity.
- The study, published February 25 in the Annals of the New York Academy of Sciences, argues caterpillars exploit ant communication and urges comparative follow‑ups.