NPCs composing that spawngroup :

spider (100%)

NPCs spawning around that spawngroup :
(Max range : 200)

commons_75, range=87 (-462,2627,-50)

commons_72, range=161 (-515,2576,-49)

commons_71, range=151 (-463,2827,-49)

commons_70, range=29 (-384,2714,-52)

commons_69, range=74 (-401,2763,-52)

commons_68, range=23 (-400,2666,-52)

commons_56, range=123 (-307,2770,-62)

commons_27, range=110 (-478,2611,-50)