NPCs composing that spawngroup :

a_thought_leech_evoker (100%)

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

thedeep1312246, range=92 (-306,187,-61)

a_shrieker (34%)
a_shrieker (33%)
a_shrieker (33%)
a_shrieker (34%)
a_shrieker (33%)
a_shrieker (33%)
a_shrieker (34%)
a_shrieker (33%)
a_shrieker (33%)
a_shrieker (34%)
a_shrieker (33%)
a_shrieker (33%)

thedeep1312239, range=135 (-377,-29,-92)

a_thought_leech_evoker (50%)
a_thought_leech_evoker (50%)

thedeep1312238, range=134 (-346,-37,-91)

a_thought_leech_evoker (50%)
a_thought_leech_spiriter (50%)

thedeep1312237, range=22 (-347,95,-62)

thedeep1312177, range=28 (-338,121,-62)

An_Enthralled_Underbulk (50%)
a_shrieker (50%)

thedeep1312176, range=81 (-319,177,-61)

a_shrieker (100%)

thedeep1312175, range=118 (-305,213,-62)

thedeep1312142, range=187 (-187,223,-59)

a_thought_leech_evoker (50%)
a_thought_leech_evoker (50%)

thedeep1312141, range=156 (-179,153,-57)

a_young_thought_leech (100%)

thedeep1312140, range=191 (-144,158,-58)

a_thought_leech_evoker (50%)
a_thought_leech_evoker (50%)

thedeep1312076, range=183 (-252,-72,-61)

thedeep1312075, range=166 (-186,4,-57)

an_enthralled_outcast (100%)

thedeep1312058, range=155 (-250,-40,-58)

An_Enthralled_Underbulk (20%)
An_Enthralled_Underbulk (80%)

thedeep1312017, range=136 (-213,18,-58)