Evolution of Ovipositor Length in Drosophila suzukii Is Driven by Enhanced Cell Size Expansion and Anisotropic Tissue Reorganization Pupal morphogenesis of the ovipositor

Graphical Abstract Highlights d D. suzukii has evolved a bigger egg-laying organ compared to D. melanogaster d The inter-species size difference arises during a short development time window d The fine-tuning of shared cellular processes drives this difference in morphogenesis d The rate of cell apical area expansion and the tissue shape anisotropy have evolved In Brief The fruit pest species Drosophila suzukii has evolved a bigger egg-laying organ compared to D. melanogaster. Green et al. show that the fine-tuning of shared cellular processes-namely, the rate of cell apical area expansion and the tissue shape anisotropy-drives the change in size and shape of the egg-laying organ of D. suzukii.