TAXONOMY OF TREE CRICKETS FOUND IN THE U.S. AND CANADA   (This information was built from data provided on SINA and OSF)

Kingdom - Animalia

  Phylum - Arthropoda

    Subphylum - Hexapoda

      Class - Insecta

        Subclass - Pterygota (winged insects)

          Infraclass - Neoptera (wing-folding insects)

            Order - Orthoptera (crickets, grasshoppers, katydids)

              Suborder - Ensifera (long antennae)

                Family - Gryllidea (true crickets)

                  Subfamily - Oecanthinae (tree crickets)

                    Genus - Neoxabea

                    Genus - Oecanthus

　

Tree Crickets found in the United States and Canada

   Neoxabea (Genus)

        List of species under Neoxabea

Neoxabea bipunctata (Two-spotted tree cricket)

　

Oecanthus (Genus)

        List of species under Oecanthus

Oecanthus argentinus (Prairie tree cricket)

Oecanthus californicus (Western tree cricket)

Oecanthus celerinictus (Fast-calling tree cricket)

Oecanthus exclamationis (Davis' tree cricket)

Oecanthus forbesi (Forbes' tree cricket)

Oecanthus fultoni (Snowy tree cricket)

Oecanthus laricis (Tamarack tree cricket)

Oecanthus latipennis (Broad-winged tree cricket)

Oecanthus leptogrammus (Thin-lined tree cricket)

Oecanthus nigricornis (Black-horned tree cricket)

Oecanthus niveus (Narrow-winged tree cricket)

Oecanthus pini (Pine tree cricket)

Oecanthus quadripunctatus (Four-spotted tree cricket)

Oecanthus rileyi (Riley's tree cricket)

Oecanthus varicornis (Different-horned tree cricket)

Additional species of  said to occur in the US:

  Neoxabea formosa (Brownsville tree cricket)

  Oecanthus n. sp. A (Texas tree cricket)

An unnamed species found in the 1960's in Mexico by Dr. R. D. Alexander has been discovered in southern Texas. It is in the process of being described.

  Oecanthus n. sp. B (Alexander's tree cricket)

An undetermined species found in 2009 in southern Texas by N. Collins and L. Symes is being investigated.

  Undetermined TX sp. C

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Dr. Thomas J. Walker provided me with a wonderfully clear overall view of Oecanthinae:

Subfamily Oecanthinae

    Tribe Oecanthini

            Genus Oecanthus (61 species)(Worldwide)

            Genus Viphius (3 species) (Africa)

            Genus Oecanthodes (1 species)(Africa)

    Tribe Xabeini

        Genus Group Prognathogryllus Group (Hawaii)

            Genus Leptogryllus (28 species)

            Genus Prognathogryllus (36 species)

            Genus Thaumatogryllus (4 species)

        Genus Group Xabea Group (27 species)

            Genus Neoxabea (14 species) (New World)

            Genus Xabea (13 species) (Old World)

    Tribe not specified

            Genus Paraphasius (1 species) (Africa)

(One of these days I'll have to count everything I've listed below to make sure my numbers match up :)

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TAXONOMY of ALL TREE CRICKET SPECIES FOUND THROUGHOUT THE WORLD

Family Gryllidae Laicharting, 1781                                                                                      
  Subfamily Oecanthinae Blanchard, 1845 
    tribe Oecanthini Blanchard, 1845
     

genus Oecanthodes Toms & Otte, 1988

species   anomala Toms & Otte, 1988     Africa (East Tropical Africa)

genus Oecanthus Serville, 1831 

species d. Toms, 1987 [temporary name]
species n. Toms, 1987 [temporary name]

species adyeri Otte & Alexander, 1983 Australasia (Australia)
species allardi Walker & Gurney, 1960 Southern America (Caribbean)
species angustus Chopard, 1925 Australasia (Australia)
species antennalis Liu, Yin & Hsia, 1994 Asia-Temperate (China)
species argentinus Saussure, 1874 Northern America (U.S.A. & Canada)
   (synonym rehnii Baker, 1905)

species bilineatus Chopard, 1937 Asia-Tropical (Indian Subcontinent)
species burmeisteri Saussure, 1877 (South Africa) 

species californicus Saussure, 1874 Northern America ( U.S.A.)
   subspecies californicus Saussure, 1874
   subspecies  pictipennis Hebard, 1935   

species capensis Saussure, 1877 Africa (Southern Africa)
species celerinictus Walker, 1963 Northern America  (U.S.A.)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             species chopardi Uvarov, 1957 Africa (Northeast Tropical Africa)
species comma Walker, 1967 Northern America (Mexico)
species comptulus Karsch, 1893 Africa (West Tropical Africa)
   (synonym camptulus Kirby, 1906)

species decorsei Chopard, 1932 Africa (Northeast Tropical Africa)

species dissimilis Toms & Otte, 1988 Africa (Southern Africa)
species dulcisonans Gorochov, 1993 Europe, Africa; Arabian Peninsula
species euryelytra Ichikawa, 2001 Asia-Temperate
species exclamationis Davis, 1907 Northern America (U.S.A &  Mexico)

species filiger Walker, 1871 Africa(Southern Africa)

species forbesi Titus, 1903 Northern America (U.S.A.) 

species fultoni Walker, 1962 Northern America (U.S.A.)

species galpini Toms & Otte, 1988 Africa (Southern Africa)

species henryi Chopard, 1936 Asia-Tropical (Indian Subcontinent)

species immaculatus Bruner, 1906 Southern America (Caribbean)

species indicus Saussure, 1878 Asia-Tropical (Indian Subcontinent, Malesia)
  (synonym idicus Anonymous)

species jamaicensis Walker, 1969 Southern America (Caribbean)
species karschi Chopard, 1932 Africa (Southern Africa)
species laricis Walker, 1963 Northern America (U.S.A.)
species latipennis Riley, 1881 Northern America (U.S.A.)
species leptogrammus Walker, 1962 North, Central and South America
species lineolatus Saussure, 1897 Southern America (Brazil) 
species longicauda Matsumura, 1904 Asia-Temperate
species macer Karsch, 1893 Africa (West Tropical Africa)
species major Walker, 1967 Northern America (Mexico)
species minutus Saussure, 1877 Southern America (Brazil)
  (synonym brasiliensis Bruner, 1916)

species nanus Walker, 1967 Southern America
species neofiliger Toms & Otte, 1988 Africa (Southern Africa)
species neosimilis Toms & Otte, 1988 Africa (Southern Africa)
species nigricornis Walker, 1869 Northern America (U.S.A.)
species niveus (De Geer, 1773) Northern America (U.S.A.)

species pellucens (Scopoli, 1763) Europe, Asia
  subspecies calinensis Jannone, 1936
  subspecies  pellucens (Scopoli, 1763)

species peruvianus Walker, 1869 Southern America
species pictipes Rehn, 1917 Southern America(Brazil)
species pini Beutenmüller, 1894 Northern America (U.S.A.)
species prolatus Walker, 1967 Central America

species pseudosimilis   Otte, 1988 Southern Africa

species quadripunctatus Beutenmüller, 1894 Northern America
  (synonym 4-punctatus Beutenmüller, 1894)

species rectinervis Chopard, 1932 Africa
species rileyi Baker, 1905 Northern America (U.S.A.)
species rufescens Serville, 1838 Asia & Pacific
  (synonym gracilis Haan, 1842)
  (synonym lineatus Walker, 1869)

species rufopictus Chopard, 1932 Africa (Southern Africa)
species similator Ichikawa, 2001 Asia-Temperate
species similis Chopard, 1932 Africa (Southern Africa)
species sinensis Walker, 1869 Asia-Temperate(China)
species socians Otte, 1988 Africa(East Tropical Africa)
species sycomorus Toms & Otte, 1988 Africa(Southern Africa)
species tenuis Walker, 1869 Southern America(Brazil)
species turanicus Uvarov, 1912 Asia - Arabia, India
species varicornis Walker, 1869 U.S.A., Mexico, Central America
  (synonym marcosensis Baker, 1905)

species zhengi Xie, 2003 Asia-Temperate (China)

genus Viphyus Otte, 1988

species bifasciatus (Chopard, 1968) Africa (West-Central Tropical Africa)

species livingstonei Otte, 1988 Africa (South Tropical Africa)

species victorinoxi Otte, 1988 Africa (South Tropical Africa)

tribe Xabeini Vickery & D.K.M. Kevan 1983

  (synonym Xabeinae Vickery & D.K.M. Kevan 1983)

genus Neoxabea Kirby, 1906

  (synonym Xabea Riley, 1881)

species   astales Walker, 1967 Southern America

species bipunctata (De Geer, 1773) Northern America (U.S.A. & Mexico)

species brevipes Rehn, 1913 Southern America

species enodis Walker, 1967 Southern America

species femorata Walker, 1967 Southern America

species formosa (Walker, 1869) Northern America (U.S.A. & Mexico)

species lepta Walker, 1967 Southern America

species meridionalis Bruner, 1916 Southern America

species obscurifrons Bruner, 1916 Southern America(Brazil)

species quadrula Walker, 1967 Southern America

species trinodosa Hebard, 1928 Southern America

genus group Prognathogryllus Group Zimmerman 1948

genus Prognathogryllinae Zimmerman 1948  

(synonym genus Leptogryllus Perkins, 1899)

(All found in Hawaii)

species apicalis Perkins, 1910

species deceptor Perkins, 1910

species elongatus Perkins, 1899

species forficularis (Brunner von Wattenwyl, 1895)

species fusconotatus Perkins, 1899

species hanaula Otte, 1994

species haupu Otte, 1994

species kaala Otte, 1994

species kainalu Otte, 1994

species kauaiensis Perkins, 1899

species kawela Otte, 1994

species kipahulu Otte, 1994

species kohala Otte, 1994

species lanaiensis Otte, 1994

species luteus Otte, 1994

species mauiensis Otte, 1994

species mauumae Otte, 1994

species molokai Otte, 1994

species montgomeri Otte, 1994

species nigrolineatus (Perkins, 1899)

species nigromaculatus Perkins, 1899

species oahuensis Otte, 1994

species ookala Otte, 1994

species perkinsi Otte, 1994

species poamoho Otte, 1994

species similis Perkins, 1899

species simillimus Perkins, 1899

species waikemoi Otte, 1994

genus Xabea Walker, 1869

species atalaia Otte & Alexander, 1983 Australasia (Australia)

species decora Walker, 1869 Asia-Tropical (Malesia)

species elderra Otte & Alexander, 1983 Australasia( Australia)

species furcata Chopard, 1927 Asia-Tropical (Malesia)

species  inermis Chopard, 1930 Asia-Tropical (Malesia)

species latipennis Chopard, 1969 Asia-Tropical (Malesia)

species leai Chopard, 1951 Australasia (Australia)

species levissima (Gorochov, 1992) Asia-Tropical (Indo-China)

species maculata Chopard, 1930 Asia-Tropical (Malesia)

species podoscirtoides Chopard, 1951 Asia-Tropical (Papuasia)

species recticercis Chopard, 1969 Asia-Tropical (Malesia)

species tumbarumba Otte & Alexander, 1983 Australasia (Australia)

species wyebo Otte & Alexander, 1983 Australasia (Australia)

species zonata Chopard, 1969 Asia-Tropical (Malesia)

genus Prognathogryllus Brunner von Wattenwyl, 1895

synonym Aphonogryllus Perkins, 1899

synonym Nesogryllus Perkins, 1899

species alapa Otte, 1994   Hawaii

species alatus Brunner von Wattenwyl, 1895

species alternatus Otte, 1994   Hawaii

species aphrastos Otte, 1994   Hawaii

species awili Otte, 1994   Hawaii

species elongatus Perkins, 1899

species epimeces Otte, 1994   Hawaii

species flavidus Otte, 1994   Hawaii

species giganteus Otte, 1994   Hawaii

species hana Otte, 1994   Hawaii

species haupu Otte, 1994   Hawaii

species hea Otte, 1994   Hawaii

species hypomacron Otte, 1994   Hawaii

species inexpectatus Perkins, 1899

species kahea Otte, 1994   Hawaii

species kahili Otte, 1994   Hawaii

species kipahulu Otte, 1994   Hawaii

species kohala Otte, 1994   Hawaii

species kukui Otte, 1994   Hawaii

species makai Otte, 1994   Hawaii

species makakapua Otte, 1994   Hawaii

species mauka Otte, 1994   Hawaii

species oahuensis Perkins, 1899

species olympus Otte, 1994   Hawaii

species opua Otte, 1994   Hawaii

species parakahili Otte, 1994   Hawaii

species parakukui Otte, 1994   Hawaii

species pararobustus Otte, 1994   Hawaii

species pihea Otte, 1994   Hawaii

species puna Otte, 1994   Hawaii

species robustus Perkins, 1899

species spadix Otte, 1994   Hawaii

species stridulans (Perkins, 1899)

species victoriae Otte, 1994   Hawaii

species waikemoi Otte, 1994   Hawaii

species weli Otte, 1994   Hawaii

genus Thaumatogryllus Perkins, 1899

species cavicola Gurney & Rentz, 1978

species conanti Otte, 1994   Hawaii

species mauiensis Otte, 1994   Hawaii

species variegatus Perkins, 1899

Unspecified tribe                                                              

Genus Paraphasius  Chopard, 1927 

species lepturoides Chopard, 1927

Some prefer to breakdown further as:  Order; Suborder; Superfamily; Family; Subfamily; Tribe; Genus; Species

Ordo: Orthoptera
Subordo: Ensifera
Superfamilia: Grylloidea
Familia: Gryllidae
Subfamilia: Oecanthinae
Tribus: Oecanthini
Genus: Oecanthus
Species: Oecanthus niveus