NPCs composing that spawngroup :

#Singultus_Primorus (2%)

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

griegsend1304108, range=65 (44,2717,-55)

griegsend1304109, range=86 (98,2751,-55)

a_deadly_dreamweaver (50%)
a_defiled_dreamweaver (50%)

griegsend1304115, range=28 (34,2797,-55)

a_tormented_pugilist (50%)
a_tormented_pugilist (50%)

griegsend1304160, range=88 (17,2688,-55)

a_deadly_dreamweaver (50%)
a_deadly_dreamweaver (50%)

A_Dark_Sending__1432769, range=73 (74,2819,-51)

A_Dark_Sending_ (2%)

A_Dark_sending_1432838, range=85 (-70,2776,-52)

A_Singultus_Proeliator (100%)

A_Dark_sending_1432842, range=81 (-49,2726,-51)

A_Vereor_Tesserarius_ (100%)

A_Dark_sending_1432862, range=92 (44,2864,-51)

A_Dark_sending_1432865, range=59 (74,2776,-51)

A_Dark_Sending (2%)
A_Dark_Sending (2%)

A_Dark_sending_1432866, range=86 (74,2839,-52)

A_Dark_Sending_ (50%)
A_Singultus_Proeliator (50%)

A_Dark_Vision_1433026, range=88 (13,2864,-52)

A_Dark_Sending_ (2%)

A_Dark_Vision_1433051, range=60 (58,2818,-51)

An_Occisor_Acerbus (2%)

A_Shadow_dream_1433134, range=62 (74,2796,-52)

A_Dark_Sending_ (50%)
A_Singultus_Proeliator (50%)

A_Singultus_Proeliat_1433143, range=54 (-39,2776,-52)

A_Singultus_Proeliator (100%)

A_Dark_Sending__1433160, range=91 (106,2780,-53)

A_dark_sending_1433240, range=98 (-59,2841,-54)

#Cubicularius_Wringordus (100%)