In synonymy:
Mengea F. O. Pickard-Cambridge, 1903 = Allomengea Strand, 1912 (Strand, 1912b: 346, preoccupied, replacement name)
Pedina Menge, 1866 = Allomengea Strand, 1912 (Strand, 1912b: 346, preoccupied, replacement name)
Pedinella Dahl, 1909 = Allomengea Strand, 1912 (van Helsdingen, 1974: 301, preoccupied)
Homonym replaced:
Mengea F. O. Pickard-Cambridge, 1903 -- see Allomengea Strand, 1912
Pedinella Dahl, 1909 -- see Allomengea Strand, 1912
In synonymy:
Allomengea adornata Zhu, Li & Sha, 1986 = Allomengea dentisetis Grube, 1861 (Eskov, 1992a: 53)
Allomengea cristata (Menge, 1866, T from Pedina) = Allomengea scopigera Grube, 1859 (Simon, 1884a: 385, sub Tmeticus scopiger)
Allomengea marchica (Dahl, 1909) = Allomengea vidua L. Koch, 1879 (Wiehle, 1956: 286, sub Mengea warburtoni)
Allomengea ontariensis (Emerton, 1925, T from Helophora) = Allomengea dentisetis Grube, 1861 (Ivie, 1967: 130, sub A. pinnata)
Allomengea pigra (L. Koch, 1879) = Allomengea dentisetis Grube, 1861 (van Helsdingen, 1974: 317)
Allomengea pinnata (Emerton, 1915) = Allomengea dentisetis Grube, 1861 (Saito, 1987: 9)
Allomengea probabilis (O. Pickard-Cambridge, 1909, T from Centromerus) = Allomengea vidua L. Koch, 1879 (Simon, 1926: 742, sub Mengea warburtoni)
Allomengea rufa (Westring, 1851, T from Linyphia) = Allomengea scopigera Grube, 1859 (Simon, 1884a: 385, sub Tmeticus scopiger)
Allomengea sitkaensis (Keyserling, 1886, T from Helophora) = Allomengea scopigera Grube, 1859 (Ivie, 1967: 130)
Allomengea warburtoni (O. Pickard-Cambridge, 1889) = Allomengea vidua L. Koch, 1879 (Holm, 1973: 90, who used the younger name)