The Canadian psyllid fauna is often lumped together with the USA fauna in checklists, and at least 354 species of psyllids are currently known to occur in the region consisting of the United States and Canada. However, many of the species found in the lower USA do not occur in Canada, and so a more focused regional checklist felt necessary to better understand the Canadian fauna. Herein I list the 119 species which are currently known to occur in Canada, but undoubtedly there are many undocumented species which likely also occur within the country.

14 species are considered to be non-native to the region; introduced species are listed in *italics*. Species not known to occur outside of Canada are listed in **bold**. Provinces in which a species has been recorded are listed with the westmost province first and then continue from west to east. The host plant (if known) is recorded following the distribution.

A printer-friendly PDF version of this list can be accessed here.

# Aphalaridae

## Aphalarinae

### Aphalara

Aphalara confusa Caldwell, 1937 (AB). Rumex

Aphalara curta Caldwell, 1937 (AB). Polygonum/Persicaria

Aphalara dentata Caldwell, 1937 (AB).

Aphalara loca Caldwell, 1937 (AB, MB). Polygonum/Persicaria

Aphalara manitobaensis Caldwell, 1938 (AB, MB).

**Aphalara monticola** Hodkinson, 1973 (AB). Rumex

Aphalara nigra Caldwell, 1937 (MB).

Aphalara nubifera Patch, 1912 (AB). Rumex

Aphalara persicaria Caldwell, 1937 (BC). Polygonum/Persicaria

Aphalara rumicis Mally, 1894 (BC, NS). Rumex

**Aphalara steironemicola** Richards, 1970 (ON). Lysimachia

### Craspedolepta

Craspedolepta angustipennis (Crawford, 1911) (YT, BC, AB, SK, ON, QC). Achillea

Craspedolepta canadensis Journet & Vickery, 1979 (BC, SK, ON). Artemisia

Craspedolepta flavida (Caldwell, 1938) (AB, SK, MB, ON, QC). Euthamia

Craspedolepta fumida (Caldwell, 1938) (BC, AB, SK, MB, ON, QC, NB, NS). Solidago

Craspedolepta furcata (Caldwell, 1936) (BC, AB, MB, NB, NS). Euthamia

Craspedolepta gutierreziae (Klyver, 1931) (AB). Guiterrezia

**Craspedolepta maculipilosa** Journet & Vickery, 1979 (AB, SK).

Craspedolepta magna Journet & Vickery, 1979 (AB, SK, MB, ON, QC, NB, NS, PE). Solidago

Craspedolepta minutissima (Crawford, 1911) (BC). Artemisia

Craspedolepta nebulosa (Zetterstedt, 1828) (YT, BC, NT, AB, MB, ON, QC). Chamaenerion

Craspedolepta nota Journet & Vickery, 1979 (AB, MB).

Craspedolepta ochracea (Provancher, 1872) (QC). Solidago

Craspedolepta parvula Journet & Vickery, 1979 (AB, SK, QC, NB). Solidago

Craspedolepta schwarzi (Ashmead, 1904) (BC, AB). Chamaenerion

Craspedolepta scurra Journet & Vickery, 1979 (QC, NS). Solidago

Craspedolepta sonchi (Foerster, 1848) (AB, SK, MB, ON). Sonchus

Craspedolepta subpunctata (Foerster, 1848) (YT, BC, AB, SK, MB, ON). Chamaenerion

Craspedolepta vancouverensis (Klyver, 1931) (BC, AB). Artemisia

Craspedolepta veaziei (Patch, 1911) (BC, AB, SK, MB, ON, QC, NB, NS). Solidago

Craspedolepta vulgaris (Journet & Vickery, 1979) (BC, AB, SK, MB, ON, QC, NB, NS, PE). Solidago

## Rhinocolinae

### Rhinocola

Rhinocola aceris (Linnaeus, 1758) (ON, PE). Acer

## Spondyliaspidinae

### Ctenarytaina

*Ctenarytaina eucalypti* (Maskell, 1890) (BC). Eucalyptus

# Calophyidae

## Calophyinae

### Calophya

Calophya triozomima Schwarz, 1904 (AB, ON). Rhus

# Carsidaridae

## Pachypsyllinae

### Pachypsylla

Pachypsylla celtidismamma (Fletcher, 1883) (SK, MB, ON, QC). Celtis

Pachypsylla celtidisvesicula Riley, 1884 (ON, QC). Celtis

Pachypsylla cohabitans Yang & Riemann 2001 (ON). Celtis

# Liviidae

## Euphyllurinae

### Psyllopsis

*Psyllopsis discrepans* (Flor, 1861) (AB, ON, NS). Fraxinus

*Psyllopsis fraxini* (Linné, 1758) (BC). Fraxinus

*Psyllopsis fraxinicola* (Foerster, 1848) (BC, NS). Fraxinus

## Liviinae

### Livia

Livia bifasciata Provancher, 1886 (ON, QC, NB). Juncus

Livia caricis Crawford, 1914 (BC). Carex

Livia crawfordi Hodkinson & Bird, 2000 (ON). Juncus

Livia maculipennis (Fitch, 1857) (ON). Juncus

Livia manitobensis Hodkinson & Bird, 2000 (MB, NB). Carex

Livia saltatrix Provancher, 1886 (ON, QC, NB). Carex

Livia vernalis Fitch, 1851 (ON, QC). Carex

## Neophyllurinae

### Neophyllura

Neophyllura arbuti (Schwarz, 1904) (BC). Arbutus

Neophyllura arctostaphyli (Schwarz, 1904) (BC, NB). Arctostaphylos

# Psyllidae

## Psyllinae

### Arytaina

*Arytaina genistae* (Latreille, 1804) (BC, NS). Cytisus

### Arytainilla

*Arytainilla spartiophila* (Foerster, 1848) (BC). Cytisus

### Cacopsylla

Cacopsylla alaskensis (Ashmead, 1904) (MB). Salix

Cacopsylla alba (Crawford, 1914) (AB). Salix

Cacopsylla americana (Crawford, 1914) (AB, NS?). Salix

Cacopsylla annulata (Fitch, 1851) (ON, QC, NB, NS). Acer

**Cacopsylla arctica** (Walker, 1852) (ON). Salix

Cacopsylla breviata (Patch, 1912) (ON). Salix

*Cacopsylla fatsiae* (Jensen, 1957) (BC). Fatsia

Cacopsylla fibulata (Crawford, 1914) (AB). Salix

Cacopsylla hamata (Tuthill, 1944) (AB). Salix

Cacopsylla highwoodensis (Hodkinson, 1978) (AB). Salix

Cacopsylla kananaskensis (Hodkinson, 1976) (AB). Salix

Cacopsylla latiforceps (Tuthill, 1943) (BC). Salix

Cacopsylla magnicauda (Crawford, 1914) (BC, AB, SK, MB). Eleagnus

*Cacopsylla mali* (Schmidberger, 1836) (QC, NL, NB, NS, PE). Malus

Cacopsylla minor (Crawford, 1914) (BC, AB). Salix

Cacopsylla myrtilli (Wagner, 1947) (AB). Vaccinium

Cacopsylla negundinis (Mally, 1894) (AB, NB). Acer

Cacopsylla parallela (Crawford, 1914) (BC). Salix

Cacopsylla peregrina (Foerster, 1848) (BC, NL, NS). Crataegus

*Cacopsylla pyricola* (Foerster, 1848) (BC, QC, NS). Pyrus

Cacopsylla rara (Tuthill, 1944) (AB, NS). Viburnum

Cacopsylla rufipennis Hodkinson, 1978 (AB). Salix

Cacopsylla sinuata Crawford, 1914 (AB, MB, ON, NL). Salix

Cacopsylla stricklandi (Caldwell, 1939) (BC, AB). Shepherdia

**Cacopsylla subspiculata** (Hodkinson, 1976) (AB). Salix

**Cacopsylla tuthilli** (Caldwell, 1939) (AB). Shepherdia

### Ceanothia

Ceanothia fuscipennis (Crawford, 1914) (BC). Ceanothus

Ceanothia robusta (Crawford, 1914) (BC). Ceanothus

### Livilla

*Livilla variegata* (Löw, 1881) (BC, NL). Laburnum

### Psylla

Psylla alni (Linné, 1758) (BC, AB). Alnus

Psylla betulae (Linné, 1758) (AB). Betula

Psylla carpinicola Crawford, 1914 (ON, QC, NB, NS). Carpinus

Psylla caudata Crawford, 1914 (BC). Alnus

Psylla diloncha (Caldwell, 1938) (AB). Corylus

Psylla floccosa Patch, 1909 (BC, AB, MB, ON, NB, NS). Alnus

Psylla hartigii (Flor, 1861) (AB, NS). Betula

Psylla striata (Patch, 1911) (BC, AB, NB, NS). Betula

Psylla viridescens (Provancher, 1872) (BC, SK, MB, ON, QC, NB, NS). Alnus

### Purshivora

Purshivora coryli (Patch, 1912) (BC). Purshia

Purshivora minuta (Crawford, 1914) (BC). Purshia

Purshivora pubescens (Crawford, 1914) (BC). Purshia

### Spanioneura

*Spanioneura buxi* (Linné, 1758) (BC, ON, QC, NL, NB, NS, PE). Buxus

*Spanioneura fonscolombii *Foerster, 1848 (ON). Buxus

Spanioneura sanguinea (Provancher, 1872) (BC, AB, MB, ON, QC, NL, NB, NS). Prunus

# Triozidae

### Bactericera

Bactericera arbolensis (Crawford, 1910) (SK). Shepherdia

Bactericera cockerelli (Šulc, 1909) (BC, AB, SK, ON). Solanaceae (many genera)

Bactericera incerta (Tuthill, 1943) (BC). Salix

Bactericera maculipennis (Crawford, 1910) (AB). Convolvulus

Bactericera minuta (Crawford, 1910) (AB). Salix

Bactericera pletschi (Tuthill, 1944) (AB).

Bactericera salicivora (Reuter, 1876) (BC, AB, ON, NB). Salix

Bactericera shepherdiae (Tuthill, 1938) (YT, BC, AB). Shepherdia

Bactericera varians (Crawford, 1910) (BC, AB). Salix

### Heterotrioza

*Heterotrioza chenopodii* (Reuter, 1876) (BC, AB, NB, NS, PE). Chenopodium

### Lauritrioza

*Lauritrioza alacris* (Flor, 1861) (BC). Laurus

### Neotriozella

Neotriozella pyrifolii (Forbes, 1885) (ON, NS). Styrax

### Phylloplecta

Phylloplecta occidentalis (Tuthill, 1939) (BC). Rubus

Phylloplecta stylifera (Patch, 1912) (MB, ON).

Phylloplecta tripunctata (Fitch, 1851) (ON, QC, NB). Rubus

### Trioza

Trioza albifrons Crawford, 1910 (BC, AB). Urtica

Trioza aylmeriae Patch, 1912 (ON). Amelanchier

Trioza forcipula Patch, 1912 (ON).

Trioza frontalis Crawford, 1910 (BC, AB, MB). Amelanchier

Trioza inversa Tuthill, 1939 (BC). Amelanchier

Trioza obtusa Patch, 1911 (AB, ON, NB, NL, NS). Amelanchier

Trioza quadripunctata Crawford, 1910 (BC, AB). Urtica

Trioza sulcata Crawford, 1910 (AB). Amelanchier

Trioza longicornis* Crawford, 1910 (BC). Salix?

# Host plants

The host plant genera for Canadian Psylloidea are listed, followed by the number of species known from that host. Some genera are grouped together based on recent changes in plant taxonomy that make it difficult to understand historical host plant records, or by a tendency of certain psyllid species groups to use multiple related genera of plants. Of the 44 host plant genus or genus groups known to be associated with psyllids in Canada, 21 of them are host to more than one species.

Salix (20)

Euthamia/Solidago (9)

Amelanchier (5)

Shepherdia/Eleagnus (5)

Alnus (4)

Carex (4)

Rumex (4)

Acer (3)

Artemisia (3)

Betula (3)

Celtis (3)

Chamaenerion (3)

Fraxinus (3)

Juncus (3)

Polygonum/Persicaria (3)

Purshia (3)

Buxus (2)

Ceanothus (2)

Cytisus (2)

Rubus (2)

Urtica (2)

Achillea (1)

Arbutus (1)

Arctostaphylos (1)

Carpinus (1)

Chenopodium (1)

Convolvulus (1)

Corylus (1)

Crataegus (1)

Eucalyptus (1)

Fatsia (1)

Guiterrezia (1)

Laburnum (1)

Laurus (1)

Lysimachia (1)

Malus (1)

Prunus (1)

Pyrus (1)

Rhus (1)

Solanaceae (many genera) (1)

Sonchus (1)

Styrax (1)

Vaccinium (1)

Viburnum (1)