I'm trying to catch all the bugs and I'm only missing 2 - the bottom left jar (on the book) and the top middle jar (just to the right of the vertical wooden beam).

Does anyone know the names of these bugs and/or how to get them to appear?


I know why some bugs appear or don't appear, but I haven't figured out the trick for these two. (I'd be happy to post the tricks I've learned, but I don't want to put out spoilers too soon.)