• Gracila Randall, 1964
• Gracila albomaculata (Jenyns, 1840) accepted as Paralabrax albomaculatus (Jenyns, 1840)
• Gracila albomarginata (Fowler & Bean, 1930)
• Gracila albomarginatus (Fowler & Bean, 1930) accepted as Gracila albomarginata (Fowler & Bean, 1930)
• Gracila okinawae Katayama, 1974 accepted as Cephalopholis polleni (Bleeker, 1868)
• Gracila polleni (Bleeker, 1868) accepted as Cephalopholis polleni (Bleeker, 1868)
• Gracilacus Raski, 1962 accepted as Paratylenchus Micoletzky, 1922
• Gracilacus abietis (Eroshenko, 1974) Raski, 1976 accepted as Paratylenchus abietis Eroshenko, 1974
• Gracilacus acicula (Brown, 1959) Raski, 1962 accepted as Paratylenchus aciculus Brown, 1959
• Gracilacus acti (Eroshenko, 1978) Siddiqi, 1986 accepted as Paratylenchus acti Eroshenko, 1978
• Gracilacus aculenta (Brown, 1959) Raski, 1962 accepted as Paratylenchus aculentus Brown, 1959
• Gracilacus anceps (Cobb, 1923) Raski, 1962 accepted as Paratylenchus anceps Cobb, 1923
• Gracilacus anchora Mohilal & Dhanachand, 2004 accepted as Paratylenchus anchorus (Mohilal & Dhanachand, 2004) Ghaderi, Kashi & Karegar, 2014
• Gracilacus aonli (Misra & Edward, 1971) Raski, 1976 accepted as Paratylenchus aonli Misra & Edward, 1971
• Gracilacus audriellae (Brown, 1959) Raski, 1962 accepted as Paratylenchus audriellus Brown, 1959
• Gracilacus bilineatus Brzeski, 1995 accepted as Paratylenchus bilineatus (Brzeski, 1995) Brzeski, 1998
• Gracilacus brasiliensis Huang & Raski, 1986 accepted as Paratylenchus brasiliensis (Huang & Raski, 1986) Brzeski, 1998
• Gracilacus capitata Adams & Eichenmuller, 1962 accepted as Paratylenchus capitatus (Adams & Eichenmuller, 1962) Siddiqi & Goodey, 1964
• Gracilacus colinus Huang & Raski, 1986 accepted as Paratylenchus colinus (Huang & Raski, 1986) Brzeski, 1998
• Gracilacus corbetti (Ganguly & Khan, 1990) Siddiqi, 2000 accepted as Paratylenchus corbetti (Ganguly & Khan, 1990) Siddiqi, 2000
• Gracilacus costata Raski, 1976 accepted as Paratylenchus costatus (Raski, 1976) Siddiqi, 1986
• Gracilacus crenata (Corbett) Raski, 1976 accepted as Paratylenchus crenatus Corbett, 1966
• Gracilacus elegans Raski, 1962 accepted as Paratylenchus elegans (Raski, 1962) Siddiqi & Goodey, 1964
• Gracilacus elongata Abdel-Rhaman & Maggenti, 1988 accepted as Paratylenchus elongatus (Abdel-Rhaman & Maggenti, 1988) Brzeski, 1998
• Gracilacus enata Raski, 1976 accepted as Paratylenchus enatus (Raski, 1976) Siddiqi, 1986
• Gracilacus epacris (Allen & Jensen, 1950) Raski, 1962 accepted as Paratylenchus epacris (Allen & Jensen, 1950) Goodey, 1963
• Gracilacus esculenta (Brown, 1959) Raski, 1962 (unaccepted > nomen nudum)
• Gracilacus goodeyi (Oostenbrink, 1953) Raski, 1962 accepted as Paratylenchus goodeyi Oostenbrink, 1953
• Gracilacus haicaudata Cid del Prado Vera & Maggenti, 1988 accepted as Paratylenchus haicaudatus (Cid del Prado Vera & Maggenti, 1988) Brzeski, 1998
• Gracilacus idalimus Raski, 1962 accepted as Paratylenchus idalimus (Raski, 1962) Siddiqi & Goodey, 1964
• Gracilacus intermedia Raski, 1962 accepted as Paratylenchus intermedius (Raski, 1962) Siddiqi & Goodey, 1964
• Gracilacus ivorensis (Luc & de Guiran, 1962) Raski, 1976 accepted as Paratylenchus ivorensis Luc & de Guiran, 1962
• Gracilacus janai Baqri, 1979 accepted as Paratylenchus janai (Baqri, 1979) Siddiqi, 1986
• Gracilacus juglansi (Kaul & Waliullah, 1990) Esser, 1992 accepted as Paratylenchus juglansi Kaul & Waliullah, 1990
• Gracilacus latescens Raski, 1976 accepted as Paratylenchus latescens (Raski, 1976) Siddiqi, 1986
• Gracilacus longilabiatus Huang & Raski, 1986 accepted as Paratylenchus longilabiatus (Huang & Raski, 1986) Brzeski, 1988
• Gracilacus longistylosa (Dement'eva, 1963) Nesterov, 1979 accepted as Paratylenchus macrodorus Brzeski, 1963
• Gracilacus macrodora (Brzeski, 1963) Raski, 1976 accepted as Paratylenchus macrodorus Brzeski, 1963
• Gracilacus marylandica (Jenkins, 1960) Raski, 1962 accepted as Paratylenchus marylandicus Jenkins, 1960
• Gracilacus micoletzkyi (Edward, Misra & Singh, 1967) Raski, 1976 accepted as Paratylenchus micoletzkyi Edward, Misra & Singh, 1967
• Gracilacus mira Raski, 1962 accepted as Paratylenchus mirus (Raski, 1962) Siddiqi & Goodey, 1964
• Gracilacus musae Shahina & Maqbool, 1993 accepted as Paratylenchus musae (Shahina & Maqbool, 1993) Brzeski, 1998
• Gracilacus mutabilis (Colbran, 1969) Raski, 1976 accepted as Paratylenchus mutabilis Colbran, 1969
• Gracilacus oostenbrinki (Misra & Edward, 1971) Raski, 1976 accepted as Paratylenchus oostenbrinki Misra & Edward, 1971
• Gracilacus pandata Raski, 1976 accepted as Paratylenchus pandatus (Raski, 1976) Siddiqi, 1986
• Gracilacus parvula Raski, 1976 accepted as Paratylenchus parvulus (Raski, 1976) Siddiqi, 1986
• Gracilacus peperpotti Schoemaker, 1963 accepted as Paratylenchus peperpotti (Schoemaker, 1963) Siddiqi & Goodey, 1964
• Gracilacus peratica Raski, 1962 accepted as Paratylenchus peraticus (Raski, 1962) Siddiqi & Goodey, 1964
• Gracilacus punctata Huang & Raski, 1986 accepted as Paratylenchus punctatus (Huang & Raski, 1986) Brzeski, 1998
• Gracilacus raskii Phukan & Sanwal, 1979 accepted as Paratylenchus raskii (Phukan & Sanwal, 1979) Siddiqi, 1986
• Gracilacus robusta (Wu, 1974) Raski, 1976 accepted as Paratylenchus robustus Wu, 1974
• Gracilacus sarissa (Tarjan, 1960) Raski, 1962 accepted as Paratylenchus sarissus Tarjan, 1960
• Gracilacus solivaga Raski, 1976 accepted as Paratylenchus solivagus (Raski, 1976) Siddiqi, 1986
• Gracilacus steineri (Golden, 1961) Raski, 1962 accepted as Paratylenchus steineri Golden, 1961
• Gracilacus straeleni (de Coninck, 1931) Raski, 1976 accepted as Paratylenchus straeleni (de Coninck, 1931) Oostenbrink, 1960
• Gracilacus teres Raski, 1976 accepted as Paratylenchus teres (Raski, 1976) Siddiqi, 1986
• Gracilacus vera Brzeski, 1995 accepted as Paratylenchus verus (Brzeski, 1995) Brzeski, 1998
• Gracilacus viteca Pramodini, Mohilal & Dhanachand, 2006 accepted as Paratylenchus vitecus (Pramodini, Mohilal & Dhanachand, 2006) Ghideri, Kashi & Karegar, 2014
• Gracilacus yokooi Toida, Ohshima & Hirata, 1983 accepted as Paratylenchus yokooi (Toida, Ohshima & Hirata, 1983) Brzeski, 1998
• Gracilancea Siddiqi, 1976
• Gracilancea graciloides (Micoletzky, 1925) Siddiqi, 1976
• Gracilancilla Thiele, 1925 accepted as Ancillina Bellardi, 1882
• Gracilancilla lindae Petuch, 1987 accepted as Ancillina lindae (Petuch, 1987)
• Gracilancilla sumatrana (Thiele, 1925) accepted as Ancillina sumatrana (Thiele, 1925)
• Gracilaria Greville, 1830
• Gracilaria abbottiana M.D.Hoyle, 1978
• Gracilaria abyssalis Gurgel & Yoneshigue-Valentin, 2008
• Gracilaria acanthophora P.Crouan & H.Crouan, 1865 accepted as Gracilaria cervicornis (Turner) J.Agardh, 1852
• Gracilaria aculeata (Hering) Papenfuss, 1967
• Gracilaria aculeolata Areschoug, 1854 accepted as Mychodea acicularis (J.Agardh) Kraft, 1978
• Gracilaria aggregata J.D.Hooker & Harvey, 1845
• Gracilaria albornozii (N.Rodríguez de Ríos) I.A.Abbott, 1991 accepted as Gracilaria damicornis J.Agardh, 1852
• Gracilaria ambigua Greville, 1935
• Gracilaria andersonii (Grunow) Kylin, 1941 accepted as Gracilariopsis andersonii (Grunow) E.Y.Dawson, 1949
• Gracilaria apiculata P.L.Crouan & H.M.Crouan, 1865
• Gracilaria apiculata subsp. candelabriformis Gurgel, Fredericq & J.N.Norris, 2004
• Gracilaria apiculifera J.Agardh, 1901
• Gracilaria arcuata Zanardini, 1858
• Gracilaria arcuata f. rhizophora Børgesen, 1943
• Gracilaria arcuata var. attenuata Umamaheswara Rao, 1974
• Gracilaria arcuata var. snackeyi Weber Bosse, 1928
• Gracilaria armata (C.Agardh) Greville, 1830
• Gracilaria articulata C.F.Chang & B.M.Xia, 1976
• Gracilaria ascidiicola E.Y.Dawson, 1961
• Gracilaria asiatica C.F.Zhang & B.M.Xia, 1985 accepted as Agarophyton vermiculophyllum (Ohmi) Gurgel, J.N.Norris et Fredericq, 2018 accepted as Gracilaria vermiculophylla (Ohmi) Papenfuss, 1967
• Gracilaria asiatica var. zhengii J.F.Zhang & B.M.Xia, 1992 accepted as Gracilaria vermiculophylla var. zhengii (J.F.Zhang & B.M.Xia) Yoshida, 1998
• Gracilaria attenuata (M.Umamaheswara Rao) V.Krishnamurthy
• Gracilaria babae (H.Yamamoto) P.-K. Ng, P.-E. Lim & S.-M. Phang, 2014
• Gracilaria baiana Lyra, Gurgel, M.C.Oliveira & Nunes, 2016
• Gracilaria bailiniae (J.FZhang & B.M.Xia) J.F.Zhang & B.M.Xia, 1994 accepted as Gracilariopsis heteroclada Zhang & Xia, 1991
• Gracilaria bangmeiana J.Zhang & I.A.Abbott, 1991 accepted as Gracilaria chondracantha (Kützing) A.J.K.Millar, 2005
• Gracilaria beckeri (J.Agardh) Papenfuss, 1952
• Gracilaria bifaria J.Agardh, 1901 accepted as Hydropuntia edulis (S.G.Gmelin) Gurgel & Fredericq, 2004
• Gracilaria birdiae E.M.Plastino & E.C.Oliveira, 2002 accepted as Crassiphycus birdiae (E.Plastino & E.C.Oliveira) Gurgel, J.N.Norris & Fredericq, 2018
• Gracilaria blodgettii Harvey, 1853
• Gracilaria brasiliensis Gurgel & Yoneshigue-Valentin, 2008
• Gracilaria brevis W.R.Taylor, 1945
• Gracilaria bursa-pastoris (S.G.Gmelin) P.C.Silva, 1952
• Gracilaria cacalia (J.Agardh) E.Y.Dawson, 1954 accepted as Gracilaria salicornia (C.Agardh) E.Y.Dawson, 1954
• Gracilaria calophyllis Areschoug, 1854 accepted as Curdiea angustata (Sonder) A.J.K.Millar, 1990