Related how?

Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Nephrozoa (Eubilateria)
Protostome (Protostomia)
Spiralia (Spiralians)
Lophotrochozoa
Lophophorata (Lophophores)
Bryozoa (Moss animal)
Gymnolaemata
Ctenostomata

Arachnidioidea (21071312)

Children (4 direct children, 99 direct and indirect children):

Nolellidae (tree size 24)

Arachnidiidae (tree size 48)

Monobryozoontidae (tree size 5)

Immergentiidae (tree size 18)