NPCs composing that spawngroup :

frenzied_strathbone (25%)

strathbone_spider (25%)

strathbone_spider (25%)

strathbone_spider (25%)

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

kaesora_5, range=146 (145,62,-61)

kaesora_6, range=165 (147,81,-61)

kaesora_7, range=123 (135,40,-61)

bristleweb_spider (50%)
strathbone_healer (50%)

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

kaesora_12, range=157 (120,74,-61)

briarweb_spider (50%)
ravener (50%)

kaesora_26, range=184 (297,-153,-123)

failed_crypt_raider (10%)
spectral_guardian (90%)

kaesora_27, range=150 (240,-181,3)

kaesora_29, range=29 (97,-85,3)

kaesora_30, range=86 (55,-33,3)

kaesora_32, range=155 (215,-210,-113)

kaesora_33, range=86 (111,-168,-27)

kaesora_34, range=117 (120,-200,-29)

kaesora_35, range=90 (153,-169,-27)

kaesora_36, range=86 (42,-63,3)

kaesora_60, range=27 (153,-89,3)

kaesora_61, range=127 (242,-135,-125)

kaesora_62, range=145 (246,-166,-123)

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

skeletal_minion (100%)

kaesora_64, range=77 (198,-57,-125)

skeletal_minion (100%)

kaesora_88, range=166 (247,-197,3)

kaesora_91, range=193 (284,-195,3)