NPCs composing that spawngroup :

briarweb_spider (25%)

briarweb_spider (25%)

briarweb_spider (25%)

strathbone_spider (25%)

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

kaesora_5, range=151 (145,62,-61)

kaesora_6, range=170 (147,81,-61)

kaesora_7, range=130 (135,40,-61)

bristleweb_spider (50%)
strathbone_healer (50%)

kaesora_9, range=161 (175,71,-61)

kaesora_12, range=166 (120,74,-61)

briarweb_spider (50%)
ravener (50%)

kaesora_26, range=157 (297,-153,-123)

failed_crypt_raider (10%)
spectral_guardian (90%)

kaesora_27, range=126 (240,-181,3)

kaesora_29, range=56 (97,-85,3)

kaesora_30, range=112 (55,-33,3)

kaesora_31, range=27 (126,-83,3)

kaesora_32, range=136 (215,-210,-113)

kaesora_33, range=89 (111,-168,-27)

kaesora_34, range=115 (120,-200,-29)

kaesora_35, range=80 (153,-169,-27)

kaesora_36, range=114 (42,-63,3)

kaesora_61, range=100 (242,-135,-125)

kaesora_62, range=120 (246,-166,-123)

kaesora_63, range=148 (296,-50,-173)

skeletal_minion (100%)

kaesora_64, range=56 (198,-57,-125)

skeletal_minion (100%)

kaesora_72, range=197 (176,-285,-109)

minion_of_Xalgoz (50%)
skeletal_minion (50%)

kaesora_88, range=143 (247,-197,3)

kaesora_89, range=188 (341,-98,5)

kaesora_91, range=168 (284,-195,3)