Thera
Stephens 1829
| Thera abolla | Inoue - 1943 | |
| Thera albata | Lempke - 1950 | |
| Thera albida | Stichel - 1911 | |
| Thera albonigrata | Gornik - 1942 | |
| Thera anomala | Inoue - 1954 | |
| Thera approximata | Lempke - 1950 | |
| Thera atrinotata | De Joannis - 1929 | |
| Thera balcanicola 6) | De Lattin - 1951 | |
| Thera bellisi 6) | Viidalepp - 1977 | |
| Thera benisegnata | Barnes & McDunnough - 1917 | |
| Thera bitactata | Walker - 1862 | |
| Thera brittanica | Turner - 1925 | |
| Thera brunneoalbata | Heydemann - 1933 | |
| Thera brunneofasciata | Lempke - 1950 | |
| Thera caeca | Osthelder - 1924 | |
| Thera castanea | Lempke - 1950 | |
| Thera cembrae | Kitt - 1912 | |
| Thera cembrae cembrae | Kitt - 1912 | |
| Thera cembrae mugo | Burmann & Tarmann - 1983 | |
| Thera cognata | Thunberg - 1792 | |
| Thera comis | Butler - 1879 | |
| Thera comitabilis | Prout - 1923 | |
| Thera completa | Bergmann - 1955 | |
| Thera confusa | ||
| Thera coniferata | Curtis - 1834 | |
| Thera consimilis | ||
| Thera consobrinata 2) | Curtis - 1824 | |
| Thera continua | Strand - 1903 | |
| Thera contracta | Hulst - 1896 | |
| Thera contractata | Packard - 1873 | |
| Thera costaclausa | Lempke - 1950 | |
| Thera costajuncta | Lempke - 1950 | |
| Thera costimaculata | Höfer - 1921 | |
| Thera costovata | Vorbrodt - 1917 | |
| Thera cupestrata | Freyer - 1830 | |
| Thera cupressata | Geyer & Hübner - 1828 | |
| Thera cyphoschema | Prout - 1926 | |
| Thera dentifascia | Prout - 1914 | |
| Thera dentifasciata | Hampson - 1895 | |
| Thera dilectaria | Bang Haas - 1910 | |
| Thera diniensis | Heinrich - 1923 | |
| Thera dissoluta | Höfer - 1920 | |
| Thera distracta | Sterneck - 1928 | |
| Thera distractata | Sterneck - 1928 | |
| Thera divisa | Strand - 1901 | |
| Thera djakonovi | Kurentzov - 1950 | |
| Thera ecce 4) | Bryk - 1942 | |
| Thera etes | Prout - 1926 | |
| Thera exangulata | Warren - 1909 | |
| Thera expiata | Püngeler - 1904 | |
| Thera fedtschenkoi | Erschoff - 1874 | |
| Thera firmata | Hübner - 1822 | |
| Thera firmata firmata | Hübner - 1822 | |
| Thera firmata tavoilloti | Mazel - 1998 | |
| Thera geneata 1) | Feisthamel - 1835 | |
| Thera georgii | Hulst - 1896 | |
| Thera gibbiata | Constantini - 1926 | |
| Thera granitalis | ||
| Thera grisescens | Höfer - 1922 | |
| Thera guriata | Von Emich - 1873 | |
| Thera herrichi | Höfer - 1922 | |
| Thera hospes | Diakonoff - 1955 | |
| Thera infuscata | Schwingenschuss - 1926 | |
| Thera interrupta | Schawerda - 1914 | |
| Thera ishizukai 5) | Inoue - 1955 | |
| Thera istriana | Naufock - 1913 | |
| Thera juniperata | Linnaeus - 1758 | |
| Thera juniperoides | Strand - 1920 | |
| Thera kardakovi | Krulikovski - 1909 | |
| Thera kashghara | ||
| Thera kurilaria | Bryk - 1942 | |
| Thera latens | Barnes & McDunnough - 1916 | |
| Thera lienigiaria | Lederer - 1853 | |
| Thera lisciata | Dannehl - 1925 | |
| Thera loeberbaueri 3) | Friedel - 1969 | |
| Thera maculata | Höfer - 1920 | |
| Thera mediolucens | Rössler - 1881 | |
| Thera medionigricans | Reutti - 1898 | |
| Thera minor | Maslowscy - 1923 | |
| Thera nigra | Cockayne - 1933 | |
| Thera nigrescens | Lempke - 1950 | |
| Thera nigrofasciata | Gumppenberg - 1890 | |
| Thera nigrolineata | Cockayne - 1946 | |
| Thera nigrolucens | Lempke - 1950 | |
| Thera nigrosignata | Prout - 1926 | |
| Thera obeliscata | Hübner - 1787 | |
| Thera obliterata | White - 1878 | |
| Thera obscura | Höfer - 1926 | |
| Thera obsoleta | Lempke - 1950 | |
| Thera orcadensis | Cockayne - 1950 | |
| Thera otisi | Dyar - 1904 | |
| Thera paradoxa | Mehlau - 1964 | |
| Thera perversa | Hirschke - 1913 | |
| Thera peterfii | Dioszeghy - 1930 | |
| Thera pittneraria | Franzenau - 1856 | |
| Thera postalbida | Wileman - 1911 | |
| Thera postalbida postalbida | Wileman - 1911 | |
| Thera postalbida problematica | Bryk - 1948 | |
| Thera praefecta | Prout - 1914 | |
| Thera privata | Prout - 1938 | |
| Thera procteri | Brower - 1940 | |
| Thera prouti | Cockayne - 1927 | |
| Thera pseudovariata | Heydemann - 1933 | |
| Thera purpureobrunnea | Cockayne - 1952 | |
| Thera reducta | Höfer - 1920 | |
| Thera resinaria | Peyerimhoff - 1862 | |
| Thera scotica 3) | White - 1871 | |
| Thera serraria | Lienig & Zeller - 1846 | |
| Thera simulata | Hübner - 1800 | |
| Thera sororcula | Bastelberger - 1909 | |
| Thera sounkeana | Matsumura - 1927 | |
| Thera spania | Stichel - 1911 | |
| Thera stragulata | Hübner - 1809 | |
| Thera strangulata | Hübner - 1809 | |
| Thera subcomis | Inoue - 1978 | |
| Thera subtaurica 6) | Wehrli - 1932 | |
| Thera tabulata | Püngeler - 1909 | |
| Thera taigana | Diakonoff - 1926 | |
| Thera tenuifasciata | Osthelder - 1929 | |
| Thera tephroptilus | Fletcher - 1961 | |
| Thera tristrigaria | Donovan - 1808 | |
| Thera ulicata | Rambur - 1834 | |
| Thera undulata | Warren - 1888 | |
| Thera variata | Denis & Schiffermüller - 1775 | |
| Thera variata variata | Denis & Schiffermüller - 1775 | |
| Thera variata mugo | Burmann & Tarmann - 1983 | |
| Thera variolata | Staudinger - 1871 | |
| Thera vetustata | Denis & Schiffermüller - 1775 | |
| Thera vitiosata | Freyer - 1832 | |
| Thera woodi | Cockayne - 1927 | |
| Thera ziczaccata | Schöyen - 1876 |
1) Sometimes regarded as subspecies of Thera cognata
2) Sometimes regarded as subspecies of Thera firmata
3) Sometimes regarded as subspecies of Thera juniperata
4) Sometimes regarded as subspecies of Thera kurilaria
5) Sometimes regarded as subspecies of Thera taigana
6) Sometimes regarded as subspecies of Thera variata
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