NPCs composing that spawngroup :

minion_of_Xalgoz (50%)

spectral_guardian (50%)

NPCs spawning around that spawngroup :
(Max range : 100)

kaesora_3, range=72 (136,170,-69)

bristleweb_spider (100%)

kaesora_4, range=81 (148,172,-69)

kaesora_5, range=79 (145,62,-61)

kaesora_6, range=69 (147,81,-61)

kaesora_7, range=90 (135,40,-61)

bristleweb_spider (50%)
strathbone_healer (50%)

kaesora_8, range=65 (148,142,-64)

kaesora_9, range=98 (175,71,-61)

kaesora_12, range=53 (120,74,-61)

briarweb_spider (50%)
ravener (50%)