Remarks
The following list (from World Catalog of Symphyta, 2010), with known host plants added (from ECatSym) was provided by Alexander Boldyrev
here.
Family PAMPHILIIDAE
Subfamily CEPHALCIINAE
Genus Acantholyda
Subgenus Acantholyda
apicalis (Westwood, 1874)
atripes (Cresson, 1880)
erythrocephala (Linne, 1758) - Pinus
marginiventris (Cresson, 1880)
pini Rohwer, 1911
poeppigii (Zaddach, 1866)
runcinata Middlekauff, 1958
tesselata (Klug, 1808)
Subgenus Itycorsia
aequorea Middlekauff, 1958
albomarginata (Cresson, 1880)
angulata (MacGillivray, 1912)
atrata (Cresson, 1880)
aurigera Middlekauff, 1958
balanata (MacGillivray, 1923)
bicolorata (Norton, 1869)
brunnicans (Norton, 1864)
brunniceps (Cresson, 1880)
bucephala (Cresson, 1880)
burkei Middlekauff, 1958
chicoutimiensis (Huart, 1879)
circumcincta (Klug, 1808)
crocina Middlekauff, 1958
depressa Middlekauff, 1958
floridana Greenbaum, 1975
luteomaculata (Cresson, 1880)
maculiventris (Norton, 1869)
nigripes (Cresson, 1880)
nigrita (Cresson, 1880)
ochrocera (Norton, 1869)
ruficeps (Harrington, 1893)
terminalis (Cresson, 1880)
verticalis (Cresson, 1880)
zappei (Rohwer, 1920)
Acantholyda species not assigned to a subgenus
thalictra Middlekauff, 1958
Genus Cephalcia
californica Middlekauff, 1958
distincta (MacGillivray, 1912)
fascipennis (Cresson, 1880)
frontalis (Westwood, 1874)
fulviceps (Rohwer, 1910)
hopkinsi (Rohwer, 1910)
marginata Middlekauff, 1953
nigra Middlekauff, 1958
provancheri (Huart, 1879)
semidea (Cresson, 1880)
Subfamily PAMPHILIINAE
Genus Neurotoma
crataegi Middlekauff, 1940 - Canada, USA - ?Crataegus
edwardi Liston, 1996 - Canada, USA - ?Padus, ?Prunus
inconspicua (Norton, 1869) - Canada, USA - Prunus
nigra Middlekauff, 1988 - USA - ??
willi Middlekauff, 1958 - USA - ?Crataegus
Genus Onycholyda
amplecta (Fabricius, 1804) - USA - Rubus
excavata (Norton, 1869) - Canada, USA - Cornus
luteicornis (Norton, 1869) - Canada, USA - Rubus
multisignata (Norton, 1864) - Canada, USA - ??
nigritibialis (Rohwer, 1912) - Canada, USA - ??
quebecensis (Provancher, 1878) - Canada, USA - ??
rufofasciata (Norton, 1869) - Canada, USA - ?Dasiphora
sitkensis (Kincaid, 1900) - Canada, USA - ?Rubus
Genus Pamphilius
burquei (Provancher, 1878) - Canada, USA - ??
cinctus Harrington, 1893 - Canada, USA - ??
infuscatus Middlekauff, 1964 - Canada, USA - Populus
middlekauffi Shinohara & D.R. Smith, 1983 - Canada, USA - Cornus, Corylus
ochreipes (Cresson, 1880) - Canada, USA - Viburnum
ocreatus (Say, 1836) - Canada, USA - ??
pacificus (Norton, 1869) - Canada, USA - Rosa
palachei (Ashmead, 1902) - USA - ??
pallimacula (Norton, 1869) - Canada, USA - ?Rosa
persicum MacGillivray, 1907 - Canada, USA - Padus, Persica
phyllisae Middlekauff, 1964 - Canada, USA - ?Quercus
pullatus (Cresson, 1880) - Canada, USA - ?Viburnum
rileyi (Cresson, 1880) - USA (Connecticut to West Virginia, west to Michigan, Iowa, Missouri ) - ?Amelanchier
semicinctus (Norton, 1862) - Canada, USA ( Quebec to North Carolina west to Tennessee and Indiana) - Amelanchier, ?Malus, ?Prunus
uniunguis Middlekauff, 1964 - Canada, USA - ??
vernalis Middlekauff, 1964 - Canada, USA - ??
Unplaced Pamphilius
canadensis Norton, 1869 valid is Lyda canadensis Norton, 1869 - Nearctic region - ??
scripta Say, 1824 valid is Tarpa scripta Say, 1824 - Nearctic region - ??
...
? - non-valuated or questionable
?? - unknown