From publisher blurb:
Really Big Bugs
What's more terrifyingly awesome than a swarm of insects? A plague of giant, man-eating insects.
Really, what could be better for the Dungeon Fantasy RPG than a bunch of creatures with their skeletons on the outside? Or perhaps no skeletons at all? Armored monsters with pinching claws and stinging tails? Oh, yes. Count me in.
From giant ants to ant-men. Scorpions both swarmed and super-sized. And spiders of course. From ancient near-gods (who are absolutely not spawns of Ungoliant) to baby acid spiders. Does it sting, bite, enweb, or just look creepy?
You'll find it here. This 48-page book includes
Notes on scaling and dealing with huge monsters
Chitin as a weapon and armor material
Bjollufolk (Beetle-people) as the playable Choleopteran archetype
39 individual monsters of various size and capability
This book is a straight-up catalog of crawling horror: 48 pages of insects, arthropods, and near-human (-ish? -oid?) creatures, ready to play.