Left-right tympanal size asymmetry in the parasitoid fly .

is a parasitoid fly notable for its impressive hearing abilities relative to its small size. Here, we use it as a model organism to investigate if minor size differences in paired sensory organs may be beneficial or neutral to an organism's perception abilities. We took high-resolution images of tympanal organs from 21 specimens and found a statistically significant surface area asymmetry (up to 6.