>>7529182/toy got me into bug gashapon/kits last year, and I got this set of giant beetles (link below) from HLJ. They're pretty neat (they came in a box of 10: 1 of each of the 7 types advertised, plus 3 doubles. From what I've read, a lot of the japanese beetle models/gashapon have been re-released pretty often, so I wouldn't worry too much about never finding them.
https://hlj.com/forest-of-insect-big-kabutomushi-festival-1box-10pcs-tta10645There's some good photos of these beetles and others here:
http://animaltoyforum.com/index.php?topic=1988.320I also just got this old mantis kit by AMT for $10 (pictured). Looks pretty detailed. Should make a nice addition to my collection.