Three thigs on this Scorps
1- 2 Spawn spots F-9 and J-8 (BLM's AF6 room) both on 1st map.
2- They do drop Coffer Key (Very rare drop like 1/60 for me, no TH tho)
3- Sometimes in the J-8 Spot u find 2 Lich instead of 1 lich+ Girtab, kill
both Liches and Scorp will pop
Hope this helps