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English
Chronological account
Diraphia 4-cornis Provancher, 1886 synonym of Diraphia viridescens Provancher, 1872 according to Provancher (1886): errata et corrigenda
Diraphia quadricornis Provancher, 1886 previous combination of Livia quadricornis (Provancher, 1886) according to Aulmann (1913): 78
Diraphia viridescens Provancher, 1872 previous combination of Psylla viridescens (Provancher, 1872) according to Hodkinson (1993): 1141
Psylla galeaformis Patch, 1911 synonym of Psylla viridescens (Provancher, 1872) according to Hodkinson (1993): 1141
Use(s) (chresonymy)
Diraphia viridescens Provancher, 1872 cited in Tuthill (1943): 462
Diraphia quadricornis Provancher, 1886 cited in Crawford (1914): 160
Diraphia 4-cornis Provancher, 1886 cited in Tuthill (1943): 462
Psylla galeaformis Patch, 1911 cited in Patch (1912): 223, Crawford (1914): 157, Tuthill (1943): 462, Kitching (1971): 37, Hodkinson (1980): 10, MacLean & Hodkinson (1980): 373, MacLean (1983): 446
Biological interactions
Host-plant
Alnus crispa (Aiton) Pursh = Alnus viridis subsp. crispa (Aiton) Turrill (Fagales, Betulaceae) according to Hodkinson (1978): 353, MacLean & Hodkinson (1980): 373, Hodkinson (1988): 1217  [ confirmed ]
Alnus incana (L.) Moench (Fagales, Betulaceae) according to Patch (1911): 12
Alnus tenuifolia Nutt. = Alnus incana subsp. tenuifolia (Nutt.) Breitung (Fagales, Betulaceae) according to Hodkinson (1988): 1217  [ confirmed ]
Geographical distribution  (partial)
Canada (British Columbia)  according to  Hodkinson (1988): 1217
Canada (Manitoba)  according to  Hodkinson (1988): 1217
Canada (Nova Scotia)  according to  Hodkinson (1988): 1217
Canada (Ontario)  according to  Provancher (1886): 307, Hodkinson (1988): 1217
Canada (Saskatchewan)  according to  Hodkinson (1988): 1217
United States of America (Alaska)  according to  Hodkinson (1978): 353
United States of America (Colorado)  according to  Hodkinson (1988): 1217
United States of America (Connecticut)  according to  Hodkinson (1988): 1217
United States of America (Idaho)  according to  Castillo Carrillo et al. (2016): 503
United States of America (Maine)  according to  Patch (1911): 14, Patch (1911): 12, Hodkinson (1988): 1217
United States of America (Massachusetts)  according to  Hodkinson (1988): 1217
United States of America (Michigan)  according to  Hodkinson (1988): 1217
United States of America (Minnesota)  according to  Hodkinson (1988): 1217
United States of America (Nevada)  according to  Hodkinson (1988): 1217
United States of America (New Hampshire)  according to  Hodkinson (1988): 1217
United States of America (New York)  according to  Hodkinson (1988): 1217
United States of America (Oregon)  according to  Hodkinson (1988): 1217
United States of America (Utah)  according to  Hodkinson (1988): 1217
United States of America (Vermont)  according to  Hodkinson (1988): 1217
United States of America (Washington)  according to  Hodkinson (1988): 1217
United States of America (Wisconsin)  according to  Hodkinson (1988): 1217
Distribution map: extant taxa
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