Pruning bug genitals revives puzzle of extra-long males
![seed bug penis and tip](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/05/fig2crop_beetlepenis.jpg?fit=860%2C460&ssl=1)
The sperm-delivery organ (left) of a Lygaeus simulans bug ends in a tough, elongated tube (right). Experimentally shortening the tube might someday explain why male and female lengths don’t seem to match.
L.R. Dougherty et al./Proceedings B 2015