NPCs composing that spawngroup :

a_phase_spider (33%)

a_phase_spider (33%)

a_phase_spider (34%)

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

necropolis_15, range=99 (733,-807,7)

necropolis_34, range=132 (963,-785,-256)

a_Chetari_guard (100%)

necropolis_53, range=148 (755,-656,-256)

a_Chetari_worker (100%)

necropolis_101, range=109 (931,-828,-256)

a_Chetari_warrior (50%)
a_Chetari_worker (50%)

necropolis_115, range=34 (814,-813,-256)

a_Chetari_guard (100%)

necropolis_116, range=196 (701,-635,-256)

a_Chetari_guard (100%)

necropolis_154, range=102 (820,-681,-255)

a_Chetari_warrior (50%)
a_Chetari_warrior (50%)

an_inactive_trap_190106, range=111 (812,-673,-253)

an_inactive_trap_190108, range=79 (897,-828,-253)

an_inactive_trap_190111, range=191 (1017,-737,-246)