| Suborder | Family (Subfamily) | Genus | Species | Authority | Common Name | Notes |
| Caelifera | Acrididae (Gomphocerinae) | Chloealtis | abdominalis | (Thomas) | Thomas’s broad-winged grasshopper | |
| Caelifera | Acrididae (Gomphocerinae) | Chloealtis | conspersa | (Harris) | sprinkled broad-winged grasshopper | Mount Desert: Procter (1946, p. 38., “Long Pond” [see note 1 below]) |
| Caelifera | Acrididae (Gomphocerinae) | Chorthippus | curtipennis | (Harris) | Marsh Meadow Grasshopper | MDI (town?): Procter (1946, p. 38.) |
| Caelifera | Acrididae (Gomphocerinae) | Dichromorpha | viridis | (Scudder) | short-winged green grasshopper | |
| Caelifera | Acrididae (Gomphocerinae) | Orphulella | pelidna | (Burmeister) | spotted-wing grasshopper | |
| Caelifera | Acrididae (Gomphocerinae) | Orphulella | speciosa | (Scudder) | pasture grasshopper | Bar Harbor: Procter (1946, p. 38., “Eden”, “Penikese”) |
| Caelifera | Acrididae (Gomphocerinae) | Pseudopomala | brachyptera | (Scudder) | short-winged toothpick grasshopper | |
| Caelifera | Acrididae (Melanoplinae) | Booneacris | glacialis | (Scudder) | wingless mountain grasshopper | Bar Harbor: Procter (1946, p. 39., “[n]ear Witches’ Hole”) as Podisma glacialis |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | bivittatus (femoratus) | (Say) | two-striped grasshopper | Bar Harbor: Procter (1946, p. 40., “Bar Harbor Narrows”, Section 20 [= “Edge of swamp back of Salisbury Cove”]) Southwest Harbor: Procter (1946, p. 40.) MDI (town?): Procter (1946, p. 40., “Station F38”) |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | borealis | (Fieber) | northern spurthroated grasshopper | Bar Harbor: Procter (1946, p. 39.) |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | bruneri | Scudder | Bruner’s spurthroated grasshopper | |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | confusus | Scudder | little pasture spurthroated grasshopper | |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | dawsoni | (Scudder) | Dawson’s spurthroated grasshopper | |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | differentialis | (Thomas) | differential grasshopper | |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | fasciatus | (F. Walker) | huckleberry spurthroated grasshopper | Bar Harbor: Procter (1946, p. 39.) Southwest Harbor: Procter (1946, p. 39.) MDI (town?): Procter (1946, p. 39., “Great Clearing”) |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | femurrubrum | (De Geer) | red-legged grasshopper | Bar Harbor: Procter (1946, p. 39., Sections 16 [= “South of Eagle Lake Road west of Eagle Lake”] and 20 [= “Edge of swamp back of Salisbury Cove”]) Southwest Harbor: Procter (1946, p. 39., Section 17 [= “Marsh south of road between Southwest Harbor and McKinley”]) MDI (town?): Procter (1946, p. 39., “Station F173 and F184”) |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | keeleri | Thomas | Keeler’s spurthroated grasshopper | Bar Harbor: Procter (1946, p. 39., Section 20 [= “Edge of swamp back of Salisbury Cove”]) as Melanoplus luridus |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | mancus | (Smith) | Smith’s short-winged grasshopper | Bar Harbor: Procter (1946, p. 39., “top of Green Mt.” [now called Cadillac Mountain]) |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | mexicanus | (Saussure) | Lesser Migratory Locust | Bar Harbor: Procter (1946, p. 39., “from top of Green Mt. [now called Cadillac Mountain] to sea level”) as Melanoplus mexicanus ssp. atlanis [sic] [see note 3 below] |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | punctulatus | (Uhler) | pinetree spurthroated grasshopper | |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | sanguinipes | (Fabricius) | lesser migratory grasshopper | |
| Caelifera | Acrididae (Melanoplinae) | Melanoplus | scudderi | (Uhler) | Scudder’s short-winger grasshopper | |
| Caelifera | Acrididae (Melanoplinae) | Paroxya | clavuliger | (Serville) | olive-green swamp grasshopper | |
| Caelifera | Acrididae (Oedipodinae) | Arphia | sulphurea | (Fabricius) | sulphur-winged grasshopper | |
| Caelifera | Acrididae (Oedipodinae) | Arphia | xanthoptera | (Burmeister) | autumn yellow-winged grasshopper | |
| Caelifera | Acrididae (Oedipodinae) | Camnula | pellucida | (Scudder) | clear-winged grasshopper | MDI (town?): Procter (1946, p. 39.) |
| Caelifera | Acrididae (Oedipodinae) | Chortophaga | viridifasciata (viridifasciata) | (De Geer) | northern green-striped grasshopper | Bar Harbor: Procter (1946, p. 38., “Salisbury Cove”) |
| Caelifera | Acrididae (Oedipodinae) | Dissosteira | carolina | (Linnaeus) | Carolina grasshopper | MDI (town?): Procter (1946, p. 39.) |
| Caelifera | Acrididae (Oedipodinae) | Encoptolophus | sordidus | Burmeister | clouded grasshopper | |
| Caelifera | Acrididae (Oedipodinae) | Pardalophora | apiculata | Saussure | coral-winged grasshopper | |
| Caelifera | Acrididae (Oedipodinae) | Psinidia | fenestralis) | Serville | longhorn band-winged grasshopper | |
| Caelifera | Acrididae (Oedipodinae) | Spharagemon | bolli | Scudder | Boll’s grasshopper | |
| Caelifera | Acrididae (Oedipodinae) | Spharagemon | collare | (Scudder) | mottled sand grasshopper | |
| Caelifera | Acrididae (Oedipodinae) | Spharagemon | marmorata (marmorata | (Harris) | marbled grasshopper | |
| Caelifera | Acrididae (Oedipodinae) | Stethophyma | gracile | (Scudder) | graceful sedge grasshopper | Bar Harbor: Procter (1946, p. 38., “Great Heath” [see note 2 below], Section 16 (= “South of Eagle Lake Road west of Eagle Lake”), “Shea’s Corner”) as Mecostethus gracilis Southwest Harbor: Procter (1946, p. 38.) as Mecostethus gracilis MDI (town?): (Procter 1946, p. 38., “Meadow Brook”) as Mecostethus gracilis |
| Caelifera | Acrididae (Oedipodinae) | Stethophyma | lineata | (Scudder) | striped sedge grasshopper | Bar Harbor: Procter (1946, p. 38., “Meadow near Salisbury Cove”, “Breakneck Pond”, Section 20 (= “Edge of swamp back of Salisbury Cove”)) as Mecostethus lineatus Southwest Harbor: Procter (1946, p. 38., Section 17 (= “Marsh south of road between Southwest Harbor and McKinley”)) as Mecostethus lineatus |
| Caelifera | Acrididae (Oedipodinae) | Trimerotropis | verruculata (verruculata) | Kirby | crackling locust | Bar Harbor: Procter (1946, p. 39., “top of Green Mt. [now called Cadillac Mountain] and so on down”) as Circotettix verruculatus [see note 3 below] |
| Caelifera | Gryllidae (Gryllinae) | Acheta | domesticus | (Linnaeus) | house cricket | |
| Ensifera | Gryllidae (Gryllinae) | Gryllus | assimilis ssp. granulatum | (Fabricius) | Common Field-cricket | Mount Desert: Procter (1946, p. 41., “Little Round Pond”) |
| Caelifera | Gryllidae (Gryllinae) | Gryllus | pennsylvanicus | Burmeister | fall field cricket | |
| Caelifera | Gryllidae (Gryllinae) | Gryllus | velitis | (Alexander & Bigelow) | spring field cricket | |
| Caelifera | Gryllidae (Nemobiinae) | Allonemobius | allardi | (Alexander & Thomas) | Allard’s ground cricket | |
| Caelifera | Gryllidae (Nemobiinae) | Allonemobius | fasciatus | (De Geer) | striped ground cricket | Bar Harbor: Procter (1946, p. 41., “Penikese”) as Nemobius faciatus ssp. fasciatus MDI (town)?): Procter (1946, p. 41., “Narrows”, “Bay Shore Drive”) as Nemobius fasciatus ssp. fasciatus |
| Ensifera | Gryllidae (Nemobiinae) | Allonemobius | fasciatus ssp. socius | (DeGeer) / Scudder | a Grass-cricket | MDI (town?): Procter (1946, p. 41.) as Nemobius fasciatus ssp.socius |
| Caelifera | Gryllidae (Nemobiinae) | Allonemobius | griseus | (E. M. Walker) | sand or gray ground cricket | |
| Caelifera | Gryllidae (Nemobiinae) | Allonemobius | tinnulus | Fulton | tinkling ground cricket | |
| Caelifera | Gryllidae (Nemobiinae) | Eunemobius | carolinus | (Scudder) | Carolina ground cricket | Bar Harbor: Procter (1946, p. 41.) as Nemobius carolinus |
| Caelifera | Gryllidae (Nemobiinae) | Neonemobius | palustris | (Blatchley) | sphagum bog cricket | Bar Harbor: Procter (1946, p. 41., “Witch Hole Pond”) Tremont: Procter (1946, p. 41.) as Nemobius palustris |
| Caelifera | Gryllidae (Oecanthinae) | Neoxabea | bipunctata | (De Geer) | two-spotted tree cricket | |
| Caelifera | Gryllidae (Oecanthinae) | Oecanthus | fultoni | T. J. Walker | snowy tree cricket | |
| Caelifera | Gryllidae (Oecanthinae) | Oecanthus | nigricornis | F. Walker | black-horned tree cricket | Bar Harbor: Procter (1946, p. 41., Section 15 [= “Road Town Hill to Indian Point”]) |
| Caelifera | Gryllidae (Oecanthinae) | Oecanthus | niveus | (De Geer) | narrow-winged tree cricket | |
| Caelifera | Gryllidae (Oecanthinae) | Oecanthus | quadripunctatus | Beutenmuller | four-spotted tree cricket | Bar Harbor: Procter (1946, p. 41., “opposite Penikese”) |
| Caelifera | Gryllidae (Oecanthinae) | Oecanthus | pini | Beutenmuller | pine tree cricket | Bar Harbor: Procter (1946, p. 41., “opposite Penikese”) |
| Caelifera | Gryllotalpidae (Gryllotalpinae) | Neocurtilla | hexadactyla | (Perty) | northern mole cricket | |
| Caelifera | Rhaphidophoridae (Ceuthophilinae) | Ceuthophilus | brevipes | Scudder | boreal camel cricket | Bar Harbor: Procter (1946, p. 41., “Corfield”) |
| Caelifera | Rhaphidophoridae (Ceuthophilinae) | Ceuthophilus | guttulosus | F. Walker | Thomas’s camel cricket | |
| Caelifera | Rhaphidophoridae (Ceuthophilinae) | Ceuthophilus | latens | Scudder | black-sided camel cricket | |
| Caelifera | Rhaphidophoridae (Ceuthophilinae) | Ceuthophilus | maculatus | (Harris) | spotted camel cricket | MDI (town?): Procter (1946, p. 40.) |
| Ensifera | Gryllacridae (Rhaphidophoridae) | Ceuthophilus | neglectus | Scudder | Yellow Cave-cricket | Mount Desert: Procter (1946, p. 41.) |
| Ensifera | Gryllacridae (Rhaphidophoridae) | Ceuthophilus | nigricans | Scudder | Yellow-bellied Cave-cricket | Bar Harbor: Procter (1946, p. 41.) |
| Ensifera | Gryllacridae (Rhaphidophoridae) | Ceuthophilus | terrestris | Scudder | Woodland Cave-cricket | Mount Desert: Procter (1946, p. 41., “Long Pond” [see note 1 below]) |
| Caelifera | Tetrigidae (Batrachideinae) | Tettigidea | lateralis | (Say) | black-sided pygmy grasshopper | MDI (town?): Procter (1946, p. 40., Station F286) as Tettigidea parvipennis (Harris) [see note 3 below] |
| Caelifera | Tetrigidae (Tetriginae) | Nomotettix | cristatus | (Scudder) | crested pygmy grasshopper | Bar Harbor: Procter (1946, p. 40.) Southwest Harbor: Procter (1946, p. 40.) MDI (town?): Procter (1946, p. 40., “Stations F31, F48, and F210”) |
| Caelifera | Tetrigidae (Tetriginae) | Paratettix | cucullatus | (Burmeister) | hooded pygmy grasshopper | |
| Caelifera | Tetrigidae (Tetriginae) | Tetrix | arenosa | Burmeister | obscure pygmy grasshopper | |
| Caelifera | Tetrigidae (Tetriginae) | Tetrix | brunneri | (I. Bolivar) | Brunner pygmy grasshopper | |
| Caelifera | Tetrigidae (Tetriginae) |
Tetrix | granulata | (Kirby) | Broad-shouldered Angulate Pygmy Grasshopper | Bar Harbor: Procter (1946, p. 40.) as Acrydium subulatum ssp. granulatum [see note 3 below] and Procter (1946, p. 40., “Witches Hole”) as Acrydium granulatum ssp. granulatum [see note 3 below] Southwest Harbor: Procter (1946, p. 40., “Beech Mt., 800 ft.”) as Acrydium granulatum var. incurvatum [see note 3 below] |
| Caelifera | Tetrigidae (Tetriginae) | Tetrix | ornata | (Say) | ornate pygmy grasshopper | Bar Harbor: Procter (1946, p. 40.) as Acrydium ornatum [see note 3 below] |
| Caelifera | Tetrigidae (Tetriginae) | Tetrix | subulata | (Linnaeus) | slender pygmy grasshopper | MDI (town?): Procter (1946, p. 40., “Bay Shore Drive”) as Acrydium subulatum [see note 3 below] |
| Caelifera | Tettigoniidae (Conocephalinae) | Conocephalus | brevipennis | (Scudder) | short-winged meadow katydid | MDI (town?): Procter (1946, p. 38.) |
| Caelifera | Tettigoniidae (Conocephalinae) | Conocephalus | fasciatus (fasciatus) | (De Geer) | slender meadow katydid | Southwest Harbor: Procter (1946, p. 38.) MDI (town?): Procter (1946, p. 38., “Station F184”) |
| Caelifera | Tettigoniidae (Conocephalinae) | Conocephalus | spartinae | (Fox) | saltmarsh meadow katydid | |
| Caelifera | Tettigoniidae (Conocephalinae) | Orchelimum | concinnum | Scudder | stripe-faced meadow katydid | |
| Caelifera | Tettigoniidae (Conocephalinae) | Orchelimum | gladiator | Bruner | gladiator meadow katydid | Bar Harbor: Procter (1946, p. 37., “Meadow south of Eden”, “Penikese”) Mount Desert: Procter (1946, p. 37.) |
| Caelifera | Tettigoniidae (Copiphorinae) | Neoconocephalus | ensiger | (Harris) | sword-bearing conehead | Bar Harbor: Procter (1946, p. 37., “Section 26” (= “[a]bandoned farm on road to Norway Drive, south of Shea’s corner”) |
| Caelifera | Tettigoniidae (Meconematinae) | Meconema | thalassinum | (De Geer) | drumming katydid | |
| Caelifera | Tettigoniidae (Phaneropterinae) | Amblycorypha | oblongifolia | (De Geer) | oblong-winged katydid | |
| Caelifera | Tettigoniidae (Phaneropterinae) | Amblycorypha | rotundifolia | (Scudder) | rattler round-winged katydid | |
| Caelifera | Tettigoniidae (Phaneropterinae) | Microcentrum | rhombifolium | (Saussure) | greater angle-wingc | |
| Caelifera | Tettigoniidae (Phaneropterinae) | Scudderia | curvicauda | (De Geer) | curve-tailed bush katydid | Mount Desert: Procter (1946, p. 37. as Scudderia curvicauda ssp. borealis) |
| Caelifera | Tettigoniidae (Phaneropterinae) | Scudderia | fasciata | Beutenmuller | treetop bush katydid | |
| Caelifera | Tettigoniidae (Phaneropterinae) | Scudderia | furcata | Brunner | fork-tailed bush katydid | MDI (town?): Procter (1946, p. 37.) |
| Caelifera | Tettigoniidae (Phaneropterinae) | Scudderia | pistillata | Brunner | broad-winged bush katydid | MDI (town?): Procter (1946, p. 37.) |
| Caelifera | Tettigoniidae (Phaneropterinae) | Scudderia | septentrionalis | (Serville) | northern bush katydid | |
| Caelifera | Tettigoniidae (Phaneropterinae) | Scudderia | texensis | Saussure & Pictet | Texas bush katydid | MDI (town?): Procter (1946, p. 37.) |
| Caelifera | Tettigoniidae (Tettigoniinae) | Roeseliana | roeselii | (Hagenbach) | Roesel’s katydid | |
| Caelifera | Tettigoniidae (Conocephalinae) | Orchelimum | vulgare | Harris | common meadow katydid | MDI (town?): Procter (1946, p. 38.) |
| Caelifera | Tridactylidae (Tridactylinae) | Neotridactylus | apicialis | Say | larger pygmy mole cricket |