NPCs composing that spawngroup :

a_Chetari_master (50%)

a_Chetari_seeker (50%)

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

necropolis_13, range=28 (957,-168,-255)

a_Chetari_Seeker (70%)
Seeker_Bulava (30%)

necropolis_17, range=198 (1003,-389,7)

necropolis_52, range=148 (828,-239,-255)

a_Chetari_Dustshaper (100%)

necropolis_53, range=98 (898,-261,-256)

a_Chetari_worker (100%)

necropolis_122, range=61 (913,-171,-256)

a_Chetari_neophyte (50%)
a_Chetari_seeker (50%)

necropolis_123, range=168 (874,-332,-255)

a_Chetari_Dominator (50%)
a_Chetari_Dustshaper (50%)

a_swarming_beetle_190139, range=147 (880,-310,10)

an_empty_nest (25%)
a_nest (75%)

Whelp_Kidnapper, range=80 (904,-145,-253)

Whelp_Kidnapper (100%)
Whelp_Kidnapper (100%)