Etymology
The name ''Syntormon'' is derived from the Ancient Greek word (, "I connect by inserted pins"); it refers to the second segment of the Insect morphology#Antennae, antennae which has a small thumb-shaped projection going into the inner side of the third segment, appearing as if it were a pin inserted into a socket.Species
The following species are included in the genus: Subgenus ''Syntormon'' Hermann Loew, Loew, 1857: *''Syntormon abbreviatus'' Theodor Becker, Becker, 1918 *''Syntormon affinis'' (William Morton Wheeler, Wheeler, 1899) *''Syntormon ama'' Hollis, 1964 *''Syntormon aotearoa'' Bickel, 1999 *''Syntormon babu'' Hollis, 1964 *''Syntormon beijingensis'' Yang, 1998 *''Syntormon bicolorellus'' (Johan Wilhelm Zetterstedt, Zetterstedt, 1843) *''Syntormon bisinuatus'' Van Duzee, 1925 *''Syntormon boninensis'' Bickel, 1994 *''Syntormon brevicornis'' Richard Karl Hjalmar Frey, Frey, 1936 *''Syntormon bulgariensis'' Oleg Negrobov, Negrobov & Kechev, 2012 *''Syntormon caffer'' Charles Howard Curran, Curran, 1925 *''Syntormon californicus'' Harmston, 1951 *''Syntormon cilitarsis'' Theodor Becker, Becker, 1922 *''Syntormon cilitibia'' Aleksandr Stackelberg, Stackelberg, 1947 *''Syntormon cinereiventris'' (Hermann Loew, Loew, 1861) *''Syntormon clavatus'' Van Duzee, 1925 *''Syntormon codinai'' Octave Parent, Parent, 1924 *''Syntormon curvisetus'' Oleg Negrobov, Negrobov, Kumazawa & Tago ''in'' Oleg Negrobov, Negrobov, Kumazawa, Tago & Selivanova, 2015 *''Syntormon cyanescens'' (Hermann Loew, Loew, 1858) *''Syntormon denticulatus'' (Johan Wilhelm Zetterstedt, Zetterstedt, 1843) *''Syntormon detritus'' Theodor Becker, Becker, 1922 *''Syntormon dissimilipes'' Van Duzee, 1925 *''Syntormon dorsalis'' Vanschuytbroeck, 1951 *''Syntormon dukha'' Hollis, 1964 *''Syntormon edwardsi'' Van Duzee, 1930 *''Syntormon elongatus'' Theodor Becker, Becker, 1922 *''Syntormon emeiensis'' Yang & Saigusa, 1999 *''Syntormon eutarsiformis'' Oleg Negrobov, Negrobov, 1975 *''Syntormon femoratus'' Van Duzee, 1925 *''Syntormon filiger'' George Henry Verrall, Verrall, 1912 *''Syntormon flavicoxus'' Oleg Negrobov, Negrobov, Kumazawa & Tago ''in'' Oleg Negrobov, Negrobov, Kumazawa, Tago & Selivanova, 2015 *''Syntormon flexibilis'' Theodor Becker, Becker, 1922 *''Syntormon francoisi'' Meuffels & Grootaert, 1999 *''Syntormon freymuthae'' Hermann Loew, Loew, 1873 *''Syntormon frivolus'' Theodor Becker, Becker, 1922 *''Syntormon fuscipes'' (Karl Ludwig Friedrich von Roser, von Roser, 1840) *''Syntormon giordanii'' Oleg Negrobov, Negrobov, 1974 *''Syntormon grootaerti'' Maslova, Oleg Negrobov, Negrobov & Selivanova, 2017 *''Syntormon henanensis'' Yang & Saigusa, 2000 *''Syntormon iranicus'' Oleg Negrobov, Negrobov, 1974 *''Syntormon janelithae'' Bickel, 1999 *''Syntormon kennedyi'' Harmston & Knowlton, 1942 *''Syntormon latitarsis'' Oleg Negrobov, Negrobov & Shamshev, 1984 *''Syntormon longipes'' Octave Parent, Parent, 1938 *''Syntormon longistylus'' Igor Grichanov, Grichanov, 2001 *''Syntormon lucaris'' Bickel, 1999 *''Syntormon luchunensis'' Yang & Saigusa, 2001 *''Syntormon luishuiensis'' Yang & Saigusa, 2001 *''Syntormon luteicornis'' Octave Parent, Parent, 1927 *''Syntormon macula'' Octave Parent, Parent, 1927 **''Syntormon macula macula'' Octave Parent, Parent, 1927 **''Syntormon macula mediterraneus'' Igor Grichanov, Grichanov, 2013 *''Syntormon medogensis'' Wang, Yang & Masunaga, 2006 *''Syntormon metathesis'' (Hermann Loew, Loew, 1850) *''Syntormon miki'' Gabriel Strobl, Strobl, 1899 *''Syntormon monile'' (Alexander Henry Haliday, Haliday, 1851) *''Syntormon monochaetus'' Oleg Negrobov, Negrobov, 1975 *''Syntormon mutillatus'' Theodor Becker, Becker, 1918 *''Syntormon nubilus'' Van Duzee, 1933 *''Syntormon obscurior'' Octave Parent, Parent, 1938 *''Syntormon opimus'' Vanschuytbroeck, 1951 *''Syntormon oregonensis'' Harmston & Knowlton, 1942 *''Syntormon ornatipes'' Van Duzee, 1925 *''Syntormon pallipes'' (Johan Christian Fabricius, Fabricius, 1794) *''Syntormon palmaris'' (Hermann Loew, Loew, 1864) *''Syntormon papei'' Igor Grichanov, Grichanov, 2001 **''Syntormon papei madagascarensis'' Igor Grichanov, Grichanov, 2001 **''Syntormon papei papei'' Igor Grichanov, Grichanov, 2001 *''Syntormon parvus'' Vanschuytbroeck, 1951 *''Syntormon pennatus'' Oscar Ringdahl, Ringdahl, 1920 *''Syntormon peregrinus'' Octave Parent, Parent, 1954 *''Syntormon pilitibia'' Igor Grichanov, Grichanov, 2013 *''Syntormon pseudopalmarae'' Oleg Negrobov, Negrobov & Shamshev, 1985 *''Syntormon pseudospicatus'' Gabriel Strobl, Strobl, 1899 *''Syntormon pumilus'' (Johann Wilhelm Meigen, Meigen, 1824) *''Syntormon punctatus'' (Johan Wilhelm Zetterstedt, Zetterstedt, 1843) *''Syntormon qianus'' Wei & Yang, 2007 *''Syntormon quadratus'' John Merton Aldrich, Aldrich, 1901 *''Syntormon rhodani'' Vaillant, 1983 *''Syntormon rotundicornis'' Van Duzee, 1931 *''Syntormon samarkandi'' Oleg Negrobov, Negrobov, 1975 *''Syntormon setosus'' Octave Parent, Parent, 1938 *''Syntormon simplicitarsis'' Van Duzee, 1925 *''Syntormon singaporensis'' Grootaert, Yang & Wang, 2006 *''Syntormon singularis'' Bickel, 1999 *''Syntormon siplivinskii'' Oleg Negrobov, Negrobov, 1975 *''Syntormon smirnovi'' Aleksandr Stackelberg, Stackelberg, 1952 *''Syntormon straeleni'' Vanschuytbroeck, 1951 *''Syntormon strataegus'' (William Morton Wheeler, Wheeler, 1899) *''Syntormon subinermis'' (Hermann Loew, Loew, 1869) **''Syntormon subinermis asiaticus'' Oleg Negrobov, Negrobov, 1975 **''Syntormon subinermis subinermis'' (Hermann Loew, Loew, 1869) *''Syntormon submonilis'' Oleg Negrobov, Negrobov, 1975 *''Syntormon sulcipes'' (Johann Wilhelm Meigen, Meigen, 1824) *''Syntormon tabarkae'' Theodor Becker, Becker, 1918 *''Syntormon tamatave'' Igor Grichanov, Grichanov, 2001 *''Syntormon tarsatus'' (Carl Fredrik Fallén, Fallén, 1823) *''Syntormon tasmanensis'' Bickel, 1999 *''Syntormon triangulipes'' Theodor Becker, Becker, 1902 *''Syntormon tricoloripes'' Charles Howard Curran, Curran, 1923 *''Syntormon trisetus'' Yang, 1998 *''Syntormon uintaensis'' Harmston & Knowlton, 1940 *''Syntormon utahensis'' Harmston & Knowlton, 1942 *''Syntormon valae'' Oleg Negrobov, Negrobov & Zhilina, 1986 *''Syntormon vanduzeei'' Charles Howard Curran, Curran, 1931 *''Syntormon variegatus'' Harmston, 1952 *''Syntormon violovitshi'' Oleg Negrobov, Negrobov, 1975 *''Syntormon wittei'' Vanschuytbroeck, 1951 *''Syntormon xinjiangensis'' Yang, 1999 *''Syntormon xiphandroides'' Octave Parent, Parent, 1932 *''Syntormon xishuiensis'' Wang, Yang & Grootaert, 2008 *''Syntormon xizangensis'' Yang, 1999 *''Syntormon zelleri'' (Hermann Loew, Loew, 1850 *''Syntormon zhengi'' Yang, 1998 Subgenus ''Drymonoeca'' Theodor Becker, Becker, 1907: *''Syntormon aulicus'' (Johann Wilhelm Meigen, Meigen, 1824) Unrecognised species: *''Syntormon decoratus'' (Alexander Henry Haliday, Haliday, 1832) Synonyms: *''Syntormon dobrogicus'' Pârvu, 1985: synonym of ''Syntormon metathesis'' (Hermann Loew, Loew, 1850) *''Syntormon praeteritus'' (Octave Parent, Parent, 1929): moved to ''Sympycnus'' *''Syntormon silvianus'' Pârvu, 1989: synonym of ''Syntormon submonilis'' Oleg Negrobov, Negrobov, 1975 ''Syntormon guizhouensis'' Wang & Yang, 2006 is an unavailable name, as it does not satisfy ICZN Articles 16.1 and 16.4: the original publication does not explicitly indicate the name to be intentionally new, and the fixation of name-bearing types for the species is not explicit.Notes
References
{{Taxonbar, from1=Q7662822, from2=Q4869163, from3=Q7204416 Dolichopodidae genera Sympycninae Taxa named by Hermann Loew