Digenea

described accepted species

• Appeltans et al: 6000

percent of marine species currently described

• Appeltans et al: 55 (max)
• Appeltans et al: 38 (min)

percent synonyms among marine species

• Appeltans et al: 20

total unknown marine species

• Appeltans et al: 5000 (min)
• Appeltans et al: 10000 (max)

undescribed marine species present in museum collections

• Appeltans et al: 600

undiscovered marine morphospecies

• Appeltans et al: 8500 (max)
• Appeltans et al: 4000 (min)

undiscovered species (molecular cryptic)

• Appeltans et al: 400 (min)
• Appeltans et al: 900 (max)