Children (6 direct children, 7 direct and indirect children):
Signal crayfish
(tree size 1)
Pacifastacus leniusculus
Pacifastacus nigrescens
Sooty crayfish
Pacifastacus fortis
Shasta crayfish
Pacifastacus gambelii
Pilose crayfish
Pacifastacus chenoderma
Pacifastacus connectens
Snake river pilose crayfish