Pleurobranchus genus of sea slugs , specifically side-gill slugs, marine gastropod mollusc in the family Pleurobranchidae.
Goodheart et al. (2015) recognized 14 valid species, while Alvim & Pimenta 2016 recognized one other species. Pleurobranchus sishaensis is additionally recognized by WoRMS.
Species in the genus Pleurobranchus include:
Pleurobranchus albiguttatus (Bergh, 1905) Pleurobranchus areolatus Mörch, 1863 Atlantic sidegill slugPleurobranchus digueti Rochebrune, 1895 Pleurobranchus forskalii Rueppell & Leuckart, 1828 - synonym: Pleurobranchus semperi (Vayssière, 1896) / Oscanius semperi Vayssière, 1896Pleurobranchus grandis W. H. Pease, 1868 Pleurobranchus hilli (Hedley, 1894) Pleurobranchus iouspi Ev. Marcus, 1984 Pleurobranchus mamillatus Quoy & Gaimard, 1832 Pleurobranchus membranaceus Montagu, 1815 Pleurobranchus nigropunctatus (Bergh, 1907) Pleurobranchus peroni Cuvier , 1804Pleurobranchus reticulatus Rang, 1832 Pleurobranchus sishaensis (Zhang & Lin, 1965) Pleurobranchus testudinarius Cantraine, 1835 Pleurobranchus varians Pease, 1860Pleurobranchus weberi (Bergh, 1905) Goodheart et al. (2015) recognized following synonyms:
Pleurobranchus lacteus Dall & C.T. Simpson, 1901 is a synonym of Berthella lacteus (A. E. Verrill, 1901)Placobranchiopsis niveus Verrill, 1901 / Pleurobranchus niveus (A. E. Verrill, 1901) is a synonym of Berthella niveus (A. E. Verrill, 1901)Nomen nudum (nude name) Pleurobranchus gigas Sawaya & Grempel, 1972 ; (nomen nudum)Species brought into synonymy Pleurobranchus agassizii MacFarland, 1909 : synonym of Berthella agassizii (MacFarland, 1909) Pleurobranchus americanus A. E. Verrill, 1885 : synonym of Berthella americana (A. E. Verrill, 1885) Pleurobranchus atlanticus R.T. Abbott, 1949 : synonym of Pleurobranchus crossei Vayssière, 1897 Pleurobranchus aurantiacus Risso, 1818 : synonym of Berthella aurantiaca (Risso, 1818) Pleurobranchus beyrichii (Hilgendorf, 1877) : synonym of Mikadotrochus beyrichii (Hilgendorf, 1877) Pleurobranchus brevifrons Philippi, 1844 : synonym of Berthella plumula (Montagu, 1803) Pleurobranchus caledonicus Risbec, 1928 accepted as Berthella caledonica (Risbec, 1928) Pleurobranchus californicus Dall, 1900 : synonym of Berthella californica (Dall, 1900) Pleurobranchus citrinus Rüppell & Leuckart, 1828 : synonym of Berthellina citrina (Rüppell & Leuckart, 1828) Pleurobranchus contarinii Vérany, 1846 : synonym of Pleurobranchus membranaceus (Montagu, 1815) Pleurobranchus crossei Vayssière, 1897 accepted as Pleurobranchus areolatus Mörch, 1863 Pleurobranchus dautzenbergi Watson, 1897 : synonym of Berthella dautzenbergi (Watson, 1897) Pleurobranchus dehaanii Cantraine, 1841 : synonym of Pleurobranchus membranaceus (Montagu, 1815) Pleurobranchus delicatus Pease, 1861 accepted as Berthellina delicata (Pease, 1861) Pleurobranchus denotarisi Vérany, 1846 : synonym of Pleurobranchus membranaceus (Montagu, 1815) Pleurobranchus denotarisi Vérany, 1846 : synonym of Pleurobranchus testudinarius Cantraine, 1835 Pleurobranchus elongatu s Cantraine, 1835 : synonym of Berthella elongata (Cantraine, 1835) Pleurobranchus elongatus Cantraine, 1835 : synonym of Berthella aurantiaca (Risso, 1818) Pleurobranchus emys Ev. Marcus, 1984 accepted as Pleurobranchus iouspi Ev. Marcus, 1984 Pleurobranchus evelinae T. E. Thompson, 1977 accepted as Pleurobranchus areolatus Mörch, 1863 Pleurobranchus fleuriausi d'Orbigny, 1837 : synonym of Berthella plumula (Montagu, 1803) Pleurobranchus forskali : synonym of Pleurobranchus forskalii (Rüppell & Leuckart, 1831) Pleurobranchus garciagomezi Cervera, J.L., Cattaneo-Vietti & M. Edmunds, 1996 accepted as Pleurobranchus reticulatus Rang, 1832 Pleurobranchus granulatus Krauss, 1848 : synonym of Berthellina granulata (Krauss, 1848) Pleurobranchus hirasei K. Bába, 1971 accepted as Pleurobranchus peronii Cuvier, 1804 Pleurobranchus inconspicua (Bergh, 1897) : synonym of Pleurobranchaea inconspicua Bergh, 1897 Pleurobranchus inhacae Macnae, 1962 : synonym of Pleurobranchus peronii Cuvier, 1804 Pleurobranchus inhancae [sic]: synonym of Pleurobranchus inhacae Macnae, 1962: synonym of Pleurobranchus peronii Cuvier, 1804 Pleurobranchus lesueur de Blainville, 1827 : synonym of Pleurobranchus membranaceus (Montagu, 1815) Pleurobranchus lowei Watson, 1897 : synonym of Berthellina edwardsi (Vayssière, 1896) Pleurobranchus luniceps Cuvier, 1817 : synonym of Euselenops luniceps (Cuvier, 1817) Pleurobranchus mammillatus Schultz in Philippi, 1836 : synonym of Pleurobranchus testudinarius Cantraine, 1835 Pleurobranchus monterosati Vayssière, 1880 : synonym of Berthella ocellata (Delle Chiaje, 1830) Pleurobranchus ocellatus Delle Chiaje, 1830 : synonym of Berthella ocellata (Delle Chiaje, 1830) Pleurobranchus patagonicus d'Orbigny, 1835 : synonym of Berthella patagonica (d'Orbigny, 1835) Pleurobranchus pellucidus Pease, 1860 : synonym of Berthella stellata (Risso, 1826) Pleurobranchus perforatus Philippi, 1844 : synonym of Berthella plumula (Montagu, 1803) Pleurobranchus perrieri Vayssière, 1897 : synonym of Pleurobranchus forskalii Rüppell & Leuckart, 1828 Pleurobranchus platei Bergh, 1898 : synonym of Berthella platei (Bergh, 1898) Pleurobranchus punctatus Quoy & Gaimard, 1832 : synonym of Berthellina citrina (Rüppell & Leuckart, 1828) Pleurobranchus reesi K. White, 1952 : synonym of Pleurobranchus atlanticus Abbott, 1949 Pleurobranchus scutatus Martens [in Möbius], 1880 : synonym of Berthella martensi (Pilsbry, 1896) Pleurobranchus stellatus Risso, 1826 : synonym of Berthella stellata (Risso, 1826) Pleurobranchus strongi Mcfarland, 1966 : synonym of Berthella strongi (MacFarland, 1966) Pleurobranchus tuberculatus Meckel, 1808 : synonym of Pleurobranchus membranaceus (Montagu, 1815) Pleurobranchus xhosa Macnae, 1962 (possibly a juvenile form of P. peroni )Pleurobranchus wirtzi Ortea, Moro & Caballer, 2014 accepted as Pleurobranchus reticulatus Rang, 1832 Nomen dubium Pleurobranchus limacoides Forbes, 1844 Pleurobranchus verrilli Thiele, 1931 Pleurobranchus ypsilophora Vayssière, 1898 Taxa inquerenda Pleurobranchus disceptus O'Donoghue, 1929 Pleurobranchus griseus Bergh, 1905 Pleurobranchus latipes Bergh, 1905 Pleurobranchus moebii Vayssière, 1898 Pleurobranchus papillosus (O'Donoghue, 1929) Pleurobranchus sculptatus (O'Donoghue, 1929) 
