Nope - never heard him say a thing about butterflies, although on one of our trips we happened upon a butterfly exhibit. I think the reason he had the tray (actually a small serving dish, like you might put olives or nuts or sauces in) was that it was probably his mom’s. It looks to be maybe 1920’s - 1940’s pressed glass, he also has her full set of crystal.
But butterflies were not an interest of his, in fact he was phobic about bugs in general. He liked snakes though! He had nature books on snakes and on tigers. But never ever talked about butterflies. In fact I forgot about us going in that butterfly exhibit until just now.