NPCs composing that spawngroup :

briarweb_spider (33%)

briarweb_spider (33%)

briarweb_spider (34%)

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

kaesora_2, range=188 (293,262,-109)

kaesora_3, range=30 (136,170,-69)

bristleweb_spider (100%)
bristleweb_spider (100%)

kaesora_4, range=30 (148,172,-69)

kaesora_5, range=80 (145,62,-61)

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

kaesora_7, range=102 (135,40,-61)

bristleweb_spider (50%)
strathbone_healer (50%)

kaesora_9, range=75 (175,71,-61)

kaesora_12, range=73 (120,74,-61)

briarweb_spider (50%)
ravener (50%)

kaesora_27, range=155 (54,18,3)

strathbone_healer (100%)

kaesora_28, range=64 (88,117,35)

minion_of_Xalgoz (50%)
spectral_guardian (50%)

kaesora_30, range=198 (55,-33,3)