Well hey, another little leftover from the Carnegie I should have mentioned before.
There are of course a multitude of ways of presenting ideas in museum exhibits. This one is not only well done (showing the natural variation present in a selection of specimens of one species alongside male and female differences and by extension a little of the diversity and variation seen between species) but has a little resonance for me as it combines two other displays I have seen and commented on before. Tokyo has a nice cabinet showing the diversity seen in a single species (mentioned here, but not shown I’m afraid) and Oxford commented on the diversity of beetles with this lovely effort.
In all three cases the message is simple, but a profoundly important part of biology as a whole and the mechanics of evolution specifically. Communicating that quickly, effectively, simply but with maximum impact and interest is a real challenge and whoever came up with these various cabinets deserves much credit for having done so.