| Messor abdelazizi Santschi, 1921 | |
| Messor aciculatus Smith, 1874 | Nuttall cockle |
| Messor aciculatus risianus Forel, 1922 | |
| Messor aegyptiacus Emery, 1878 | Inflated axinopsid |
| Messor aegyptiacus aegyptiacus Emery, 1878 | |
| Messor aegyptiacus canaliculatus Donisthorpe, 1944 | |
| Messor aegyptiacus felah Santschi, 1923 | |
| Messor aegyptiacus fossulatus (Santschi, 1923) | ⇒ Messor foreli Santschi, 1923 |
| Messor aegyptiacus phasianicus Bernard, 1953 | |
| Messor aegyptiacus tunetinus Santschi, 1923 | |
| Messor alexandri Tohme, 1981 | |
| Messor andrei (Mayr, 1886) | ⇒ Veromessor andrei Mayr, 1886 |
| Messor angularis Santschi, 1928 | |
| Messor antennatus Emery, 1908 | Grooved fingernailclam |
| Messor antennatus antennatus Emery, 1908 | |
| Messor antennatus fodorii Roeszler, 1942 | |
| Messor antennatus personatus (Santschi, 1931) | ⇒ Messor antennatus Emery, 1908 |
| Messor aphaenogasteroides Pisarski, 1967 | |
| Messor aralocaspius Ruzsky, 1902 | Green jackknife |
| Messor aralocaspius aralocaspius Ruzsky, 1902 | |
| Messor aralocaspius infumatus Kuznetsov-Ug..., 1929 | |
| Messor arenarius Fabricius, 1787 | Florida marshclam |
| Messor arenarius alfierii Santschi, 1938 | |
| Messor arenarius diabolus Santschi, 1938 | |
| Messor arenarius ratus Menozzi, 1933 | |
| Messor arenarius thebaicus Santschi, 1912 | |
| Messor asmaae Sharaf, 2018 | |
| Messor atanassovi Atanassov, 1982 | |
| Messor atanassovii Atanassov, 1982 | Mottled fingernailclam |
| Messor barbarum Emery, 1878 | |
| Messor barbarum pseudo Mayr, 1862 | |
| Messor barbarus Linnaeus, 1767 | Harvester ant |
| Messor barbarus barbarus Linnaeus, 1767 | |
| Messor barbarus gallaoides Santschi, 1929 | |
| Messor barbarus mediosanguineus Donisthorpe, 1946 | |
| Messor barbarus nigricans Santschi, 1929 | |
| Messor barbarus politus Karavaiev, 1912 | |
| Messor barbarus sahlbergi (Forel, 1913) | ⇒ Messor barbarus Linnaeus, 1767 |
| Messor barbarus santschii Emery, 1908 | |
| Messor barbarus semoni Forel, 1906 | |
| Messor barbarus structor korborum Emery, 1921 | |
| Messor beduinus Emery, 1922 | Carpenter carditid |
| Messor berbericus Bernard, 1955 | |
| Messor bernardi Cagniant, 1967 | |
| Messor bouvieri Bondroit, 1918 | |
| Messor boyeri Cagniant, 2006 | |
| Messor brevispinosus Santschi, 1923 | |
| Messor bucephalus Salata, Deme..., 2023 | |
| Messor buettikeri Collingwood, 1985 | |
| Messor caducus T. Victor, 1839 | |
| Messor caducus glabrescens Arnol´di, 1977 | |
| Messor capensis Mayr, 1862 | |
| Messor capitatus Latreille, 1798 | European Seed Harvesting Ant |
| Messor capitatus nigricans Santschi, 1929 | |
| Messor carpathous Menozzi, 1936 | |
| Messor caviceps Forel, 1902 | |
| Messor celiae Reyes, 1985 | |
| Messor cephalotes Emery, 1895 | |
| Messor ceresis Santschi, 1934 | Tellin semele |
| Messor chamberlini Wheeler, 1915 | Many-line lucine |
| Messor chicoensis Smith, M.R., 1956 | |
| Messor clivorum (Latreille, 1798) | ⇒ Messor structor Latreille, 1798 |
| Messor clivorum sevani (Arnol´di, 1977) | ⇒ Messor structor Latreille, 1798 |
| Messor clypeatus Kuznetzov-Ug..., 1927 | Flat mysella |
| Messor collingwoodi Bolton, 1982 | Painted sunsetclam |
| Messor concolor Santschi, 1927 | Cuba transennella |
| Messor crawleyi Santschi, 1928 | |
| Messor creticus Salata & Bor..., 2019 | |
| Messor danaes Salata, Geor..., 2023 | |
| Messor decipiens Santschi, 1917 | Ringed lucine |
| Messor dentatus Santschi, 1927 | Cuba transennella |
| Messor denticornis Forel, 1910 | |
| Messor denticulatus Santschi, 1927 | Cuba transennella |
| Messor desertora He & Song, 2009 | |
| Messor diabarensis Arnoldi, 1970 | Colorful transennella |
| Messor ebeninus Santschi, 1927 | Cuba transennella |
| Messor eglalae Sharaf, 2007 | |
| Messor erectus Espadaler, 1998 | |
| Messor erwini Orou, Csősz,..., 2023 | |
| Messor excursionis Ruzsky, 1905 | Oval macoma |
| Messor excursionis alaschanicus Ruzsky, 1915 | |
| Messor excursionis fraternus Ruzsky, 1905 | |
| Messor excursionis sillemi Staercke, 1935 | |
| Messor ferreri Collingwood, 1993 | Confusing transennella |
| Messor foreli Santschi, 1923 | Inflated axinopsid |
| Messor foreli brevispinosus Santschi, 1923 | |
| Messor foreli surcoufi Santschi, 1923 | |
| Messor fraternus Ruzsky, 1905 | |
| Messor galla Mayr, 1904 | Japanese horseshoe crab |
| Messor galla galla | |
| Messor galla obscurus Menozzi & Co..., 1904 | |
| Messor grandinidus Emery, 1912 | |
| Messor hebraeus Santschi, 1927 | Cuba transennella |
| Messor hellenicus Agosti & Col..., 1987 | |
| Messor hellenius Agosti & Col..., 1987 | Banded transennella |
| Messor hesperius Santschi, 1927 | |
| Messor himalayanus Forel, 1902 | |
| Messor hismai Collingwood ..., 1996 | |
| Messor hispanicus Santschi, 1919 | Tennessee riffleshell |
| Messor hodnii Barech, Khal..., 2020 | |
| Messor hoggarensis Santschi, 1929 | |
| Messor ibericus Santschi, 1931 | Grooved fingernailclam |
| Messor incisus Stitz, 1923 | |
| Messor incorruptus Kuznetzov-Ug..., 1929 | |
| Messor inermis Kuznetzov-Ug..., 1929 | |
| Messor instabilis Smith, 1858 | Louisiana pearlshell |
| Messor instabilis marocana | |
| Messor intermedius Santschi, 1927 | Cuba transennella |
| Messor isekram Bernard, 1977 | |
| Messor juliana Pergande, 1894 | |
| Messor julianus Pergande, 1894 | White strigilla |
| Messor kardamenae Salata & Bor..., 2023 | |
| Messor kasakorum Arnoldi, 1970 | Colorful transennella |
| Messor kasakorum nadezhdae Arnol´di, 1969 | |
| Messor kazakorum Arnoldi, 1969 | |
| Messor kisilkumensis Arnoldi, 1970 | Colorful transennella |
| Messor laboriosus Santschi, 1927 | |
| Messor lamellicornis Arnoldi, 1968 | |
| Messor lariversi Smith, 1951 | Butter clam |
| Messor lobicornis Forel, 1894 | Lilliput |
| Messor lobicornis batnensis Forel, 1909 | |
| Messor lobicornis laurenti Santschi, 1939 | |
| Messor lobicornis normandi Santschi, 1918 | |
| Messor lobicornis rugosus André, 1881 | |
| Messor lobicornis rugulosus Santschi, 1926 | |
| Messor lobicornis submuticus Emery, 1908 | |
| Messor lobognathus Andrews, 1916 | California butterclam |
| Messor luebberti Forel, 1910 | |
| Messor luridus Santschi, 1927 | Cuba transennella |
| Messor luridus virginalis Santschi, 1927 | |
| Messor lusitanicus Tinaut, 1985 | |
| Messor maculifrons Santschi, 1927 | Cuba transennella |
| Messor marikovskii Arnoldi, 1970 | Colorful transennella |
| Messor marocanus Santschi, 1927 | Cuba transennella |
| Messor maroccanus Santschi, 1927 | |
| Messor mcarthuri | |
| Messor medioruber Santschi, 1910 | Catspaw |
| Messor medioruber maurus Santschi, 1927 | |
| Messor medioruber montanus Santschi, 1927 | |
| Messor medioruber postpetiolatus Santschi, 1917 | |
| Messor medioruber postquadratus Santschi, 1932 | |
| Messor mediosanguineus Donisthorpe, 1946 | |
| Messor melancholicus Arnoldi, 1977 | |
| Messor meridionalis André, 1883 | |
| Messor minor André, 1883 | Cuba transennella |
| Messor minor calabricus Santschi, 1927 | |
| Messor minor capreensis Santschi, 1927 | |
| Messor minor hesperius Santschi, 1927 | |
| Messor minor laboriosus (Santschi, 1927) | ⇒ Messor syriacus Tohme, 1969 |
| Messor minor maurus Barquin, 1981 | |
| Messor minor minor André, 1883 | |
| Messor muraywahus Collingwood ..., 1996 | |
| Messor muscatus Collingwood ..., 1996 | |
| Messor muticus Nylander, 1849 | |
| Messor nahali Tohme, 1981 | |
| Messor niloticus Santschi, 1938 | |
| Messor nondentatus He & Song, 2009 | |
| Messor obscurior Pashaei Rad,..., 2018 | |
| Messor oertzeni Forel, 1910 | Elegant dwarf cockle |
| Messor oertzeni amasiensis Emery, 1921 | |
| Messor olegianus Arnoldi, 1970 | Colorful transennella |
| Messor orientalis Emery, 1898 | Fat gaper |
| Messor perantennatus Arnoldi, 1970 | Colorful transennella |
| Messor pergandei (Mayr, 1886) | ⇒ Veromessor pergandei Mayr, 1886 |
| Messor piceus Stitz, 1923 | |
| Messor picturatus Santschi, 1927 | Cuba transennella |
| Messor picturatus maurus Santschi, 1927 | |
| Messor platyceras Crawley, 1920 | |
| Messor ponticus Steiner & al., 2018 | |
| Messor postpetiolatus Santschi, 1917 | Ringed lucine |
| Messor postquadratus Santschi, 1932 | |
| Messor punctaticeps Barech, Khal..., 2020 | |
| Messor regalis Emery, 1892 | |
| Messor reticuliventris Karavaiev, 1910 | Milky venus |
| Messor rufotestaceus Förster, 1850 | Expanded macoma |
| Messor rufus Santschi, 1923 | Flat mysella |
| Messor rufus striolatus Kuznetsov-Ug..., 1927 | |
| Messor rugesus | |
| Messor rugesus crawleyi | |
| Messor ruginodis Stitz, 1916 | |
| Messor rugosus André, 1881 | Atlantic surfclam |
| Messor rugosus bodenheimeri Menozzi, 1933 | |
| Messor rugosus rugosus André, 1881 | |
| Messor sanctus Emery, 1921 | Elegant dwarf cockle |
| Messor sanctus obscuriventris Poldi, 1995 | |
| Messor sanctus sanctus Forel, 1905 | |
| Messor sanganus Collingwood ..., 1996 | |
| Messor santschii Emery, 1908 | |
| Messor sculpturatus ♰ Carpenter, 1930 | Fine-line lucine |
| Messor semirufus André, 1883 | Cuba transennella |
| Messor semirufus emeryi Santschi, 1927 | |
| Messor semirufus phasianicus Bernard, 1953 | |
| Messor semoni Forel, 1906 | |
| Messor smithi Cole, 1963 | |
| Messor sordidus (Forel, 1892) | ⇒ Messor barbarus Linnaeus, 1767 |
| Messor stoddardi Emery, 1895 | |
| Messor striatellus Arnoldi, 1970 | Colorful transennella |
| Messor striaticeps André, 1883 | |
| Messor striatifrons Stitz, 1923 | |
| Messor striativentris Emery, 1908 | |
| Messor striatulus Emery, 1891 | |
| Messor structor Latreille, 1798 | Colorful transennella |
| Messor structor aegaeus Menozzi, 1928 | |
| Messor structor platyceras Crawley, 1920 | |
| Messor structor structor Latreille, 1798 | |
| Messor structor tadzhikorum Arnol´di, 1969 | |
| Messor structor tyrrhenus Latreille, 1798 | |
| Messor subgracilinodis Arnoldi, 1970 | Colorful transennella |
| Messor sultanus Santschi, 1917 | Ringed lucine |
| Messor syriacus Tohme, 1969 | Pacific eggcockle |
| Messor tadzhikorum Arnoldi, 1970 | |
| Messor tataricus (Ruzsky, 1905) | ⇒ Messor structor Latreille, 1798 |
| Messor testaceus Donisthorpe, 1950 | |
| Messor timidus Espadaler, 1997 | |
| Messor tropicorum Wheeler, 1922 | |
| Messor turcmenochorassanicus Arnoldi, 1977 | |
| Messor valentinae Arnoldi, 1970 | Colorful transennella |
| Messor variabilis Kuznetzov-Ug..., 1927 | Flat mysella |
| Messor varrialei Emery, 1921 | |
| Messor vaucheri Emery, 1908 | |
| Messor veneris Salata, Geor..., 2023 | |
| Messor vicinus Kuznetzov-Ug..., 1927 | Flat mysella |
| Messor wasmanni Krauße-Heldr..., 1910 | Varnished liocyma |
