NPCs composing that spawngroup :

an_elder_lavaspinner (50%)

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

delvea3410039, range=70 (-1454,-1513,-101)

delvea3410040, range=0 (-1518,-1546,-102)

delvea3410176, range=49 (-1474,-1570,-96)

unhatched_lavaspinner_eggs (50%)
unhatched_lavaspinner_eggs (50%)

delvea3410178, range=64 (-1520,-1481,-103)

unhatched_lavaspinner_eggs (50%)
unhatched_lavaspinner_eggs (50%)

delvea3410181, range=51 (-1565,-1526,-101)

delvea_monocle_2_9, range=72 (-1564,-1490,-102)

a_treasure_minder (50%)
a_treasure_minder (50%)

delvea_monocle_2_43, range=72 (-1453,-1512,-101)

an_elder_lavaspinner (50%)
an_elder_lavaspinner (50%)

delvea_monocle_3_0, range=48 (-1471,-1561,-98)

a_preying_lavaspinner (50%)

delvea_monocle_3_46, range=77 (-1512,-1468,-104)

an_elder_lavaspinner (50%)

delvea_monocle_3_47, range=0 (-1517,-1545,-103)

a_reclusive_lavaspinner (50%)

delvea_monocle_3_48, range=72 (-1453,-1512,-101)

an_elder_lavaspinner (50%)

delvea_monocle_4_9, range=0 (-1517,-1545,-103)

a_reclusive_lavaspinner (50%)

delvea_monocle_4_20, range=72 (-1453,-1512,-101)

an_elder_lavaspinner (50%)

delvea_monocle_7_0, range=48 (-1471,-1561,-98)

a_preying_lavaspinner (50%)

delvea_monocle_7_46, range=77 (-1512,-1468,-104)

a_reclusive_lavaspinner (50%)

delvea_monocle_7_47, range=0 (-1517,-1545,-103)

an_elder_lavaspinner (50%)

delvea_monocle_7_48, range=72 (-1453,-1512,-101)

an_elder_lavaspinner (50%)

delvea_monocle_7_65, range=69 (-1529,-1477,-103)

#Hulking_Lavaspinner (50%)

delvea_monocle_8_28, range=77 (-1512,-1468,-104)

an_elder_lavaspinner (50%)

delvea_monocle_8_29, range=0 (-1517,-1545,-103)

a_reclusive_lavaspinner (50%)

delvea_monocle_8_30, range=72 (-1453,-1512,-101)

an_elder_lavaspinner (50%)