| For this purpose a paper flag, made from a small piece of white cardboard is glued to the dorsum of the mesothorax in about vertical direction. |
| Prothoracic segment a little longer than the mesothorax which, in turn, slightly exceeds the metathorax. |
| Tufted is a classical Drosophila mutant characterized by a large number of ectopic mechanosensory bristles on the dorsal mesothorax. |
| On either side we count nine stigmata, set as before on the mesothorax and the first eight abdominal segments. |
| The next segment is the mesothorax, which is immovably fused to the next thoracic segment. |
| There is a rather extensive membranous area separating the sterna of the mesothorax and the metathorax. |
