Stygarctus
(tree size 8)
Pseudostygarctus
(tree size 7)
Parastygarctus
(tree size 7)
Megastygarctides
(tree size 6)
Mesostygarctus
(tree size 2)
Neostygarctus
(tree size 3)
Prostygarctus
(tree size 1)
Faroestygarctus
(tree size 1)
Stygarctinae
Megastygarctidinae
Neoarctinae