1. species: Tobrilus gracilis (Bastian, 1865)

    Taxon group: roundworm (Nematoda)

    Tobrilus gracilis
    Tobrilus gracilis (Bastian, 1865)

  2. species: Halalaimus gracilis De Man, 1888

    Taxon group: roundworm (Nematoda)

    Halalaimus gracilis
    Halalaimus gracilis De Man, 1888

  3. species: Cephalodella gracilis (Ehrenberg, 1830)

    Taxon group: rotifer

    Cephalodella gracilis
    Cephalodella gracilis (Ehrenberg, 1830)

  4. species: Sobolevicanthus gracilis (Zeder, 1803)

    Taxon group: tapeworm (Cestoda)

    Sobolevicanthus gracilis
    Sobolevicanthus gracilis (Zeder, 1803)

  5. species: Urnatella gracilis Leidy, 1851

    Taxon group: entoproct

    Urnatella gracilis Leidy, 1851
    Urnatella gracilis

  6. species: Phyllocoptes gracilis (Nalepa, 1891)

    Taxon group: acarine (Acari)

    Phyllocoptes gracilis (Nalepa, 1891)
    Phyllocoptes gracilis

  7. species: Epipyxis gracilis D.K. Hilliard et Asmund, 1963

    Taxon group: chromist

    Epipyxis gracilis
    Epipyxis gracilis D.K. Hilliard et Asmund, 1963

  8. species: Sphaerolaimus gracilis de Man, 1876

    Taxon group: roundworm (Nematoda)

    Sphaerolaimus gracilis de Man, 1876
    Sphaerolaimus gracilis

  9. species: Amathia gracilis (Leidy, 1855)

    Taxon group: bryozoan

    Amathia gracilis
    Amathia gracilis (Leidy, 1855)

  10. species: Mimosella gracilis Hincks, 1851

    Taxon group: bryozoan

    Mimosella gracilis Hincks, 1851
    Mimosella gracilis