Boreal
Guides
Nebria gebleri gebleri
Nebria gebleri gebleri is a subspecies of ground beetle in the family Carabidae, subfamily Nebriinae. It is native to boreal and montane regions of North America, with records from Alaska, Canada, and the contiguous United States. The species is part of the subgenus Catonebria, a group characterized by cold-adapted biology and often associated with high-elevation or high-latitude habitats.
Neohypdonus restrictulus
Restricted Click Beetle
Neohypdonus restrictulus is a click beetle species in the family Elateridae, first described by Mannerheim in 1853. The species is known by the common name Restricted Click Beetle. It is distributed across high-latitude regions of North America, including Alaska, Yukon, Northwest Territories, Nunavut, and Quebec. As a member of Elateridae, it possesses the family's characteristic click mechanism for righting itself when overturned.
Neolimnophila placida
Placid Crane Fly
Neolimnophila placida is a crane fly species in the family Limoniidae, subfamily Chioneinae. It is widely distributed across the Holarctic region, occurring in both the Nearctic and Palaearctic realms. The species has been documented from northern North America through much of Europe and across northern Asia to Japan. Like other limoniid crane flies, it is associated with moist habitats where larvae develop in decaying organic matter.
Notaris puncticollis
Pale-spotted gray weevil
Notaris puncticollis is a marsh weevil species described by LeConte in 1876. It belongs to the family Erirhinidae (sometimes historically placed in Brachyceridae or Curculionidae in various classifications). The species has a boreal transcontinental distribution and is primarily associated with wetland habitats. It is one of approximately 10 observed species in the genus Notaris.
Nothodelphax umbrata
Nothodelphax umbrata is a species of planthopper in the family Delphacidae, described by Emeljanov in 1982. It belongs to a genus of small, often wetland-associated planthoppers found primarily in northern latitudes. The species has been recorded from boreal and subarctic regions including parts of northern Asia and North America. As with other delphacid planthoppers, it likely inhabits moist environments associated with its host plants.
Ochthephilus planus
Ochthephilus planus is a rove beetle in the family Staphylinidae, subfamily Oxytelinae. This small beetle is distributed across northern North America, with records from Canada (including Alberta, British Columbia, Newfoundland, Ontario, Quebec, and Yukon) and the United States (including Alaska, California, Colorado, Maine, New Hampshire, New Mexico, New York, Oregon, Tennessee, Vermont, Washington, and Wyoming), as well as the Russian Far East. The species was first described by J.L. LeConte in 1861 based on specimens from North America. Like other members of the Oxytelinae, it is associated with moist habitats and organic matter decomposition.
Oeneis macounii
Macoun's Arctic, Canada Arctic
Oeneis macounii is a medium-sized satyrine butterfly occurring across boreal North America. Adults have a wingspan of 46–65 mm and exhibit a distinctive biennial life cycle with regionally alternating flight years. The species is closely associated with pine forests, particularly jack pine and lodgepole pine systems.
Olethreutes trinitana
Olethreutes trinitana is a small tortricid moth species first described by James Halliday McDunnough in 1931. The species is known from scattered records across central and eastern North America, primarily from the Canadian prairie provinces and northern New England. Like other members of the Olethreutinae subfamily, it is presumed to have a concealed larval stage, though specific biological details remain poorly documented. The genus Olethreutes is diverse, with many species requiring dissection or molecular analysis for reliable identification.
Olisthaerinae
Olisthaerinae is a small subfamily of rove beetles (Staphylinidae) characterized by a 5-5-5 tarsal formula and morphological similarity to Phloeocharinae. The group is primarily associated with dead conifer bark habitats. Only two species are documented in North America: Olisthaerus megacephalus and O. substriatus, with a range extending from Alaska across Canada to New York. The biology of this subfamily remains poorly understood.
Olophrum boreale
Olophrum boreale is a rove beetle (Staphylinidae: Omaliinae) with a Holarctic distribution spanning northern Europe, Russia, and North America. The species occurs in boreal and montane habitats. Limited observational records suggest it is not frequently encountered.
Oncopsis cinctifrons
Oncopsis cinctifrons is a leafhopper species in the family Cicadellidae, tribe Macropsini. It occurs in boreal and subarctic regions of North America, with records from Alaska across Canada to Ontario. The species was described by Provancher in 1889. Like other Oncopsis species, it is associated with woody host plants.
Oreoneta
A genus of dwarf spiders (family Linyphiidae) established in 1894, comprising approximately 30 species distributed across cold-temperate and Arctic regions of the Northern Hemisphere. Most species inhabit high-latitude or high-altitude environments. The genus was revised extensively by Saaristo & Marusik in 2004, resulting in numerous new species descriptions.
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dwarf spiders
Oreonetides is a genus of dwarf spiders in the family Linyphiidae, first described by Embrik Strand in 1901. The genus contains 17 described species distributed across the Northern Hemisphere, with records from North America, Europe, Russia, and East Asia. Species occupy diverse habitats ranging from boreal and alpine regions to temperate forests. The type species, Oreonetides vaginatus, has the broadest distribution, spanning from North America across Eurasia to Japan.
Oxypoda chantali
Oxypoda chantali is a species of rove beetle described from Canada and Alaska in 2006. It belongs to the large genus Oxypoda within the subfamily Aleocharinae. The species was established as part of a comprehensive revision that reorganized the North American Oxypoda fauna into 14 species groups. Like other members of its genus, it is a small-bodied staphylinid beetle with reduced elytra.
Pandemis borealis
Pandemis borealis is a species of tortricid moth described by Diakonoff in 1960. It is currently recognized as a synonym of Pandemis refracta. The species has been recorded from limited locations in northeastern North America, specifically Ontario and Maine. As a member of the leafroller moth family Tortricidae, its larvae likely feed on foliage of woody plants, though specific host associations remain undocumented.
Panthea furcilla
Eastern Panthea Moth, Tufted White Pine Caterpillar
Panthea furcilla is a noctuid moth occurring across boreal Canada and the eastern United States. Adults fly from June to August, with a single generation in Canada and multiple generations in the southern United States. The species is notable for its association with coniferous trees, with larvae feeding on pines, spruces, and eastern larch. Two subspecies are recognized: the nominate P. f. furcilla and the southern P. f. australis.
Pardosa hyperborea
Pardosa hyperborea is a species of thin-legged wolf spider in the family Lycosidae. It has a transcontinental distribution spanning the Nearctic and Palearctic regions, occurring in northern North America, Greenland, and across northern Eurasia from Europe to Siberia. The species inhabits high-latitude and high-elevation environments, reflecting adaptations to cold climates. Like other members of the genus Pardosa, it exhibits characteristic long leg spines and elevated cephalothorax morphology.
Patrobus septentrionis
Patrobus septentrionis is a ground beetle species in the family Carabidae, distributed across boreal and temperate regions of the Northern Hemisphere. The species occurs in Europe, Northern Asia (excluding China), and North America. It belongs to the subfamily Patrobinae, a group associated with moist, often riparian or wetland habitats. Like other members of its genus, it is likely sensitive to soil disturbance and agricultural practices.
Pelenomus asperulus
Pelenomus asperulus is a species of weevil in the family Curculionidae, first described by Dietz in 1896. The genus Pelenomus comprises small weevils associated with wetland and riparian habitats. This species is recorded from boreal and subarctic regions of North America including Alaska, Yukon, Alberta, and Ontario.
Pelophila borealis
boreal mud-loving beetle
Pelophila borealis is a species of ground beetle in the subfamily Nebriinae, first described by Gustaf von Paykull in 1790. It is a small, shiny black beetle measuring 9.5–10.1 mm in length. The species has a Holarctic distribution, occurring across northern Eurasia and North America.
Phidippus borealis
Boreal Tufted Jumping Spider
Phidippus borealis is a species of jumping spider in the family Salticidae, commonly known as the boreal tufted jumping spider. It occurs in boreal regions of North America, including Canada and the northern United States. As a member of the genus Phidippus, it possesses the characteristic large anterior median eyes and jumping capabilities typical of salticid spiders.
Philodromidae
Running Crab Spiders, Philodromid Crab Spiders
Philodromidae is a family of araneomorph spiders comprising over 530 species across 31 genera. Members are commonly called running crab spiders or philodromid crab spiders due to their crab-like appearance and sideways-oriented legs. Unlike true crab spiders (Thomisidae), philodromids do not construct webs for prey capture but instead hunt by ambush. They are primarily associated with vegetation, where they occur on stems, leaves, and tree trunks.
Phronia
Phronia is a genus of fungus gnats (Diptera: Mycetophilidae) established by Winnertz in 1863. Species in this genus are found in boreal and arctic regions, with at least one species, Phronia reducta, documented from Salla in Finnish Lapland and Siberia. The genus belongs to the tribe Mycetophilini within the subfamily Mycetophilinae. Like other fungus gnats, members of Phronia are associated with decomposing organic matter and fungal habitats.
Phryganophilus collaris
Collared False Darkling Beetle
A small false darkling beetle in the family Melandryidae, recognized by the distinctive pale pronotal collar that contrasts with its darker body. The species occurs across northern and western North America, with records from boreal and montane regions of Canada. Like other melandryids, it is associated with decaying wood and fungal habitats. The specific epithet and common name both reference the contrasting light-colored band across the pronotum.
Phyllonorycter nipigon
Balsam Poplar Leaf Blotch Miner
Phyllonorycter nipigon is a small leaf-mining moth in the family Gracillariidae. The species is widespread across northern North America, with larvae that create blotch mines in leaves of various Populus species. Adults are active in late summer and fall, with one generation per year. The species is named after Lake Nipigon in Ontario, Canada.
Pieris angelika
Arctic White
Pieris angelika, commonly known as the Arctic White, is a cold-adapted butterfly in the family Pieridae. It occurs in subarctic and boreal regions of northwestern North America. The species was described by Eitschberger in 1984, though its taxonomic status may be subject to revision due to potential earlier descriptions. It is one of the few Pieris species specialized for high-latitude environments.
Piratula canadensis
Piratula canadensis is a wolf spider in the family Lycosidae, originally described from Canada. The species occurs in boreal and montane regions of North America and has also been recorded from the Russian Far East including Kamchatka. As a member of the genus Piratula, it is associated with moist habitats near water bodies.
Pityohyphantes subarcticus
Taiga Sheetweb Weaver
Pityohyphantes subarcticus is a species of sheetweb weaver spider in the family Linyphiidae, commonly known as the Taiga Sheetweb Weaver. It occurs in boreal and subarctic regions of western Canada and Alaska. As a member of the genus Pityohyphantes, it constructs characteristic hammock-shaped webs suspended in vegetation. The species was described by Chamberlin and Ivie in 1943.
Platycerus depressus
Aspen stag beetle (eastern)
Platycerus depressus is a species of stag beetle in the family Lucanidae, described by Joseph LeConte in 1850. It is one of the smaller stag beetles in North America and is associated with aspen and other deciduous trees. The species is widely distributed across boreal and temperate regions of Canada and the northern United States. It is commonly known as the eastern aspen stag beetle due to its association with Populus tremuloides and related host trees.
Platycheirus
Sedgesitters
Platycheirus is a large genus of hoverflies (family Syrphidae) commonly known as sedgesitters. The genus was established in 1828 and is primarily Holarctic in distribution, with approximately 110 species in the Palearctic and 70 in the Nearctic region. Species are slender, small to medium-sized flies, often with distinctive leg modifications in males used for species identification.
Platycheirus hyperboreus
Pearly Sedgesitter
Platycheirus hyperboreus, commonly known as the Pearly Sedgesitter, is a small hoverfly (Syrphidae) distributed across boreal and arctic regions of North America and northern Europe. Adults are 5.3–8.7 mm in length and exhibit distinctive abdominal patterning with pale spots on dark segments. The species is recognized by its modified front legs, which are yellow with gradually dilated tibiae—an adaptation associated with its common name. It occurs in northern latitudes ranging from Alaska and Greenland through Scandinavia to northern Siberia.
Podmosta
spring stoneflies
Podmosta is a genus of spring stoneflies in the family Nemouridae, comprising approximately six described species distributed across northern North America and the Russian Far East. The genus is notable for its adaptation to cold climates, including documented embryonic diapause in at least one species. Adults are active in spring, with nymphal development occurring primarily during winter months.
Polia propodea
Scarce Boreal Arches
Polia propodea is a noctuid moth species described by McCabe in 1980. It is known from North America, where it has been recorded in boreal regions. The species is referred to by the common name 'Scarce Boreal Arches' and belongs to the tribe Hadenini within the subfamily Noctuinae.
Polistes dominula
European Paper Wasp
Polistes dominula is a highly successful invasive social wasp native to Eurasia that has established populations across North America, South America, New Zealand, South Africa, and other regions. First detected in North America near Boston in 1978, it has become one of the most abundant wasps on the continent. The species builds small, exposed paper nests in protected locations and preys primarily on live insects, particularly caterpillars. Unlike yellowjackets, it does not scavenge for meat or sugar. Its rapid spread has been attributed to ecological flexibility, superior competitive ability, and tolerance of human-altered environments.
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arctiella
Polopeustis arctiella is a small snout moth in the family Pyralidae, described by Gibson in 1920. It is restricted to northern North America, with records from the Canadian provinces of Alberta and Manitoba, as well as the territory of Nunavut. The species has a wingspan of approximately 22 mm. It belongs to the subfamily Phycitinae, a diverse group of pyralid moths whose larvae often feed on stored products or plant materials.
Polychrysia esmeralda
delphinium leaftier
Polychrysia esmeralda, commonly known as the delphinium leaftier, is a noctuid moth described by Charles Oberthür in 1880. The species name derives from Greek roots meaning "many" and "gold," referring to the adult's shining golden wing coloration. It occurs across northern North America and eastern Siberia, with larvae specializing on toxic Ranunculaceae host plants including monkshood and delphinium. The species is notable for its distinctive larval behavior of tying leaves together with silk and spinning a gold-colored cocoon within.
Polygonia gracilis
Hoary Comma
Polygonia gracilis, commonly known as the Hoary Comma, is a butterfly species widespread across boreal North America. It inhabits forested and mountainous regions from Alaska and Canada southward through the Rocky Mountains to New Mexico and the Pacific coast. The species is recognized by its distinctive wing shape with ragged, notched margins. Adults are known to overwinter, allowing for early spring activity in suitable habitats.
Praestigia
Praestigia is a genus of sheet-weaving spiders (family Linyphiidae) described by Alfred Frank Millidge in 1954. The genus is distinguished by a unique male cephalic projection bearing a detachable cap composed of interconnected fibers bound with a waxy substance. Eight species are recognized, distributed across boreal and arctic regions of the Northern Hemisphere. The etymology combines Latin 'prae' (before/in front) and Greek 'stigios' (awl), referencing this distinctive projection.
Proteinus limbatus
Proteinus limbatus is a small rove beetle (Staphylinidae) in the subfamily Proteininae. It is known from boreal and montane regions of North America, with records spanning Alaska and Canada south to the northern United States. The genus Proteinus contains diminutive species often associated with decaying organic matter and fungal habitats.
Pseudanostirus hoppingi
Pseudanostirus hoppingi is a click beetle species in the family Elateridae, first described by Van Dyke in 1932. The species belongs to the tribe Ampedini and is known from the Pacific Northwest region of North America. Records indicate presence in coastal Alaska and British Columbia. Like other elaterids, it possesses the characteristic clicking mechanism for righting itself when overturned.
Psylla betulaenanae
Psylla betulaenanae is a species of psyllid (jumping plant louse) in the family Psyllidae, described by Ossiannilsson in 1970. It belongs to a genus of phloem-feeding insects associated with woody plants. Like other psyllids, it has piercing-sucking mouthparts adapted for feeding on plant sap. The species epithet suggests an association with birch (Betula), though specific host plant relationships require confirmation from original taxonomic descriptions.
Ptenothrix palmata
Ptenothrix palmata is a species of globular springtail in the family Dicyrtomidae, first described by Folsom in 1902. As a member of the order Symphypleona, it possesses the rounded, globular body form characteristic of this group. The species has been documented from Arctic, subarctic, and northern North American regions, including Pacific North America. Like other dicyrtomids, it inhabits moist microhabitats in forest floor environments.
Pteryx
Pteryx is a genus of minute feather-winged beetles in the family Ptiliidae. Adults are less than 1 mm in length and inhabit rotting wood, particularly under bark of decaying logs and stumps. The genus exhibits wing polymorphism, with individuals occurring in either a normal winged form or a vestigial-winged neonate form characterized by pale pigmentation and reduced eyes. Pteryx is distributed across the Northern Hemisphere in Eurasia and North America, with highest abundance in northern bogs and swampy habitats.
Pugettia
kelp crabs
Pugettia is a genus of marine kelp crabs in the family Epialtidae, distributed across the North Pacific from North America to East Asia. Species inhabit shallow subtidal zones, primarily associated with macroalgal habitats including kelp beds, Sargassum stands, and red algal turfs. Many species exhibit ontogenetic habitat shifts, with juveniles and smaller individuals occupying deeper algal turfs while larger adults migrate to shallower macroalgal beds. The genus includes approximately 25 extant species plus one fossil species, with several species serving as important subjects for studies of crab growth, reproduction, and habitat ecology.
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campbelli
A small rove beetle in the subfamily Omaliinae, described from North American material in 1995. Known from scattered records across boreal and temperate regions of Canada and the northern United States. The genus Pycnoglypta contains few species and is characterized by compact body form and distinctive mouthpart structures.
Pytho
dead log beetles, dead log bark beetles
Pytho is a small genus of saproxylic beetles in the family Pythidae, commonly known as dead log beetles or dead log bark beetles. The genus comprises approximately nine to ten described species distributed across the Holarctic region, recognized as typically boreal taxa. Species inhabit the cambial layer of dead trees, particularly conifers, where larvae feed on partially decomposed wood and bark. Several species have disjunct distributions spanning North America, Europe, and Japan, reflecting complex historical biogeographic patterns involving vicariance and dispersal across Beringia. Some species, such as P. abieticola, are considered relicts of primeval forests and are in decline across much of Central Europe.
Quedius brunnipennis
Quedius brunnipennis is a rove beetle (family Staphylinidae) described by Mannerheim in 1843. It is placed in the subgenus Distichalius within the genus Quedius. The species is recorded from northern North America, with distribution spanning boreal and temperate regions of Canada and the northern United States.
Quedius fellmani
Quedius fellmani is a rove beetle in the family Staphylinidae. It is a Holarctic species with a broad distribution spanning northern and central Europe, Russia across multiple regions including Siberia and the Far East, Mongolia, Greenland, and North America from Alaska through Canada to Colorado and New Hampshire. The species was described by Zetterstedt in 1838.
Quedius simulator
Quedius simulator is a species of rove beetle (family Staphylinidae) described by Smetana in 1971. It belongs to the large genus Quedius, which comprises numerous species distributed primarily in the Northern Hemisphere. The species has been recorded across northern North America, with specimens documented from Alaska through Canada to the northern United States.
Quedius sublimbatus
Quedius sublimbatus is a rove beetle (Staphylinidae) with a Holarctic distribution spanning northern Eurasia and North America. The species was described by Mäklin in 1853 and is currently classified within the subgenus Raphirus of the genus Quedius. It inhabits boreal and subarctic regions across a broad longitudinal range.