NPCs composing that spawngroup :

a_kerra_spider (100%)

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

erudsxing_15, range=135 (-1308,1288,100)

a_kerra_snake (100%)

erudsxing_17, range=91 (-1212,1283,-2)

a_vampire_bat (100%)

erudsxing_20, range=168 (-1151,1349,40)

a_kerra_spider (100%)

erudsxing_9, range=109 (-1304,1252,96)

a_kerra_spider (50%)
a_vampire_bat (50%)

erudsxing_10, range=89 (-1131,1153,120)

a_kerra_snake (100%)
a_kerra_snake (100%)

erudsxing_33, range=19 (-1212,1211,80)

erudsxing_42, range=197 (-1295,1371,118)

a_willowisp (50%)
a_willowisp (50%)

erudsxing_44, range=60 (-1175,1239,55)

Yelesom_Paust (100%)