There are two current types of dramcryx.
Spawns: Low elavations, regardless of light level
Drops: Corrupted Shards
Drops: Jungle Shards
Spawns: Dungeon of Arcana
Attack: Unknown (HOW THE HECK IS THIS UNKNOWN!? I am looking at the wikia, and it says"?")
Drops: Collector Fragments
Attack: 6, Fire (Ranged, not melee.)