http://www.taito.co.jp/d3/cp/mushi/
It's an adventure game in the style of a picture story book instead of the usual dialogue boxes like in Trauma Center or Phoenix Wright.
You travel around following the story and making choices like the usual visual novel games. You also uncover shaded 5x5 grid maps to find stuff such as items, events and enemies. A card battle will then follow if you do happen to find the enemy and you fight them with bugs of your own.
There's also an encyclopaedia about bugs too.
The game's aimed at the younger audience and seems it isn't even listed on most of the JP release lists so... =/