NPCs composing that spawngroup :

a_thought_leech_evoker (100%)

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

thedeep1312280, range=29 (624,91,-61)

a_deepspore_mushroom (50%)
a_shrieker (50%)

thedeep1312265, range=94 (539,180,-57)

a_thought_leech_evoker (50%)
a_young_thought_leech (50%)

thedeep1312264, range=76 (540,156,-58)

a_thought_leech_evoker (50%)
a_thought_leech_spiriter (50%)

thedeep1312246, range=183 (571,-73,-5)

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

thedeep1312245, range=159 (758,129,-58)

an_enthralled_outcast (100%)

thedeep1312244, range=163 (763,97,-60)

thedeep1312243, range=199 (795,148,-60)

an_enthralled_outcast (100%)

thedeep1312234, range=194 (646,-81,-34)

a_thought_leech_evoker (50%)
a_thought_leech_evoker (50%)

thedeep1312226, range=125 (500,183,-61)

a_thought_leech (100%)

thedeep1312224, range=16 (615,114,-60)

an_enthralled_outcast (50%)
an_enthralled_outcast (50%)

thedeep1312220, range=185 (785,118,-56)

An_Enthralled_Razorfiend (50%)
An_Enthralled_Razorfiend (50%)

thedeep1312194, range=180 (779,131,-59)

an_enthralled_outcast (50%)
An_Enthralled_Underbulk (50%)

thedeep1312170, range=23 (623,105,-60)

an_enthralled_outcast (50%)
an_enthralled_outcast (50%)

a_thought_leech_evoc_1433255, range=195 (660,-78,-40)

a_thought_leech_evoker (100%)