NPCs composing that spawngroup :

a_drogan_spider (100%)

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

droga_193, range=66 (-363,-955,-173)

droga_353, range=61 (-357,-1005,-173)

a_goblin_dirt_defender (50%)
a_goblin_dirt_defender (50%)

droga_354, range=36 (-392,-967,-173)

a_goblin_dust_mystic (50%)
a_goblin_flame_adept (50%)

droga_355, range=70 (-477,-957,-173)

a_drogan_spider (50%)
a_drogan_spider (50%)

droga_356, range=87 (-502,-1016,-173)

a_goblin_moss_knight (50%)
a_goblin_slinker (50%)

droga_223165_takp_import_v0, range=61 (-366,-1028,-172)