![Graphic][1] Imagine designing a fly: you would need wings of course, three body segments, six legs, big red eyes and antennae. Unless you are already a fly enthusiast, you might… Click to show full abstract
![Graphic][1] Imagine designing a fly: you would need wings of course, three body segments, six legs, big red eyes and antennae. Unless you are already a fly enthusiast, you might not realize that you also need to include the halteres: small dumbbell-shaped appendages whose evolutionary
               
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