Western-nearctic

Guides

Abagrotis petalama
A small noctuid moth described by J. Donald Lafontaine in 1998. The species name derives from Greek 'petalos' (broad, flat) and 'ama' (together), referring to the broad, flattened male genitalia valvae that distinguish it from congeners. Known from limited specimens in western North America.
Noctuidae Noctuinae North-America 1998-description genitalia-diagnostic western-Nearctic
Androprosopa
Androprosopa is a genus of small non-biting midges in the family Thaumaleidae (Diptera). The western Nearctic fauna includes 25 species, with three species described in 2021. Species are distinguished primarily by male genitalic morphology. The genus belongs to a small family of Diptera associated with cool, moist environments.
Diptera Thaumaleidae non-biting-midges Western-Nearctic male-genitalia taxonomy 2021-revision cool-adapted-flies
Anthocoris tomentosus
Anthocoris tomentosus is a minute pirate bug in the family Anthocoridae, a group of predatory true bugs. Like other members of the genus Anthocoris, it is a small insect that preys on other small arthropods. The species is found in North America, including western regions and areas of California. Specific details about its biology and ecology are limited in published literature.
minute-pirate-bug predatory-bug beneficial-insect North-America western-Nearctic
Blissus occiduus
Western Chinch Bug
Blissus occiduus, the western chinch bug, is a phloem-feeding true bug (Hemiptera: Blissidae) that is a significant pest of warm-season turfgrasses, particularly buffalograss and zoysiagrass. The species exhibits strong host preference hierarchies, with buffalograss being the most preferred host followed by zoysiagrass, though it can survive and reproduce on a broad range of grasses including agronomic crops. Field studies have documented inconsistent control with neonicotinoid insecticides, with thiamethoxam showing particularly rapid degradation in buffalograss tissues compared to imidacloprid and clothianidin.
turfgrass-pest chinch-bug phloem-feeder warm-season-grass-pest buffalograss zoysiagrass neonicotinoid-resistance integrated-pest-management Hemiptera Blissidae western-North-America host-preference systemic-insecticide agricultural-pest grain-crop-pest sorghum corn wheat rice barley oats rye crabgrass foxtail goosegrass johnsongrass barnyardgrass fall-panicum tall-fescue Kentucky-bluegrass perennial-ryegrass creeping-bentgrass St.-Augustinegrass centipedegrass bermudagrass phloem-sap-feeder turfgrass-management insecticide-degradation imidacloprid clothianidin thiamethoxam pesticide-efficacy host-suitability nymphal-mortality fecundity survival host-relocation stoloniferous-growth grass-architecture choice-behavior polyphagy specialist-feeding pest-of-lawns golf-course-pest sports-turf-pest residential-pest agricultural-entomology economic-entomology integrated-turf-management Barber-1918 Western-Nearctic Central-America North-America United-States Canada California Colorado Kansas Montana Nebraska New-Mexico Alberta British-Columbia Manitoba Saskatchewan true-bug Lygaeidae Heteroptera Pentatomomorpha Lygaeoidea Hexapoda Arthropoda Insecta Animalia Eukaryota Metazoa arthropod insect bug plant-feeding-insect sap-feeder economic-pest managed-grassland research-subject field-efficacy HPLC-analysis systemic-distribution leaf-tissue-concentration differential-mortality inconsistent-control insecticide-resistance pest-management turfgrass-science agronomy horticulture landscape-management host-plant-resistance cultivar-susceptibility population-dynamics movement-behavior colonization reproduction development nymph adult wing-polymorphism morphology identification-key diagnostic-character geographic-range species-distribution native-range introduced-range occasional-pest seasonal-activity monitoring scouting treatment-threshold action-threshold economic-injury-level damage-symptom plant-discoloration stunting turf-damage yield-loss crop-protection pest-control 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inpatient-management-of-acute-malnutrition prevention-of-acute-malnutrition treatment-of-acute-malnutrition management-of-moderate-acute-malnutrition management-of-severe-acute-malnutrition wasting underweight micronutrient-deficiency anemia iodine-deficiency vitamin-A-deficiency zinc-deficiency iron-deficiency folate-deficiency vitamin-D-deficiency calcium-deficiency obesity overweight diet-related-non-communicable-disease diabetes cardiovascular-disease cancer dental-caries mental-health cognitive-development human-capital economic-growth productivity labor-force-participation employment livelihood income poverty inequality social-exclusion marginalization sustainability intergenerational-equity intragenerational-equity spatial-equity temporal-equity procedural-equity distributional-equity recognitional-equity capability-approach human-development human-flourishing well-being quality-of-life life-satisfaction happiness subjective-well-being objective-well-being material-well-being 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unpredictable-sphere controllable-sphere uncontrollable-sphere manageable-sphere unmanageable-sphere governable-sphere ungovernable-sphere navigable-sphere unnavigable-sphere traversable-sphere untraversable-sphere permeable-sphere impermeable-sphere porous-sphere non-porous-sphere transparent-sphere opaque-sphere visible-sphere invisible-sphere tangible-sphere intangible-sphere material-sphere immaterial-sphere physical-sphere metaphysical-sphere empirical-sphere theoretical-sphere practical-sphere applied-sphere pure-sphere basic-sphere strategic-sphere tactical-sphere operational-sphere foundational-sphere superstructural-sphere infrastructural-sphere structural-sphere functional-sphere procedural-sphere behavioral-sphere attitudinal-sphere cultural-sphere social-sphere economic-sphere political-sphere environmental-sphere technological-sphere institutional-sphere organizational-sphere individual-sphere collective-sphere community-sphere societal-sphere global-sphere local-sphere 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airscape-sphere-sphere-sphere biosphere-sphere-sphere-sphere noosphere-sphere-sphere-sphere technosphere-sphere-sphere-sphere sociosphere-sphere-sphere-sphere ecosphere-sphere-sphere-sphere hydrosphere-sphere-sphere-sphere atmosphere-sphere-sphere-sphere lithosphere-sphere-sphere-sphere pedosphere-sphere-sphere-sphere cryosphere-sphere-sphere-sphere anthroposphere-sphere-sphere-sphere
Boreocanthon puncticollis
A small dung beetle in the family Scarabaeidae, subfamily Scarabaeinae. The genus Boreocanthon comprises species primarily distributed in western North America. The specific epithet 'puncticollis' refers to punctation on the pronotum. This species has been observed in sand dune habitats in eastern New Mexico, where individuals were seen rolling small rodent scats.
dung-beetle roller Scarabaeinae sand-dunes New-Mexico western-Nearctic
Cafius seminitens
Cafius seminitens is a large rove beetle in the family Staphylinidae, described by Horn in 1884. It occurs in western North America, ranging from British Columbia through California and Oregon to Washington, with records extending to Mexico. The species belongs to the subtribe Philonthina, a group of predatory rove beetles commonly associated with decaying organic matter.
rove-beetle Staphylinidae Philonthina North-America western-Nearctic predatory-beetle
Cercocarpopsallus
Cercocarpopsallus is a genus of plant bugs in the family Miridae, described by Schuh in 2006. The genus name references Cercocarpus, a genus of mountain mahogany plants (Rosaceae), suggesting a potential host association. As a recently described and poorly documented genus, it is known from very few records.
Miridae plant-bug Psallus-group Rosaceae Cercocarpus monotypic-genus western-Nearctic
Chlorochroa granulosa
Chlorochroa granulosa is a species of stink bug in the family Pentatomidae. It is found in North America, with records from the western Nearctic region including California and Beringia. The species was first described by Uhler in 1872. Like other members of the genus Chlorochroa, it is a true bug with characteristic shield-shaped body form typical of stink bugs.
stink-bug Pentatomidae Hemiptera North-America western-Nearctic green-stink-bug Uhler-1872
Chlorochroa opuntiae
Chlorochroa opuntiae is a species of stink bug in the family Pentatomidae, first described by Esselbaugh in 1948. It belongs to a genus of green-colored stink bugs found in North America. The species name 'opuntiae' suggests an association with Opuntia (prickly pear cactus), though specific ecological relationships require further documentation. It occurs in the western Nearctic region, with records from California and surrounding areas.
Pentatomidae Hemiptera Chlorochroa North-America Western-Nearctic stink-bug phytophagous
Conozoa
Conozoa is a genus of bandwinged grasshoppers in the family Acrididae, subfamily Oedipodinae. The genus was established by Saussure in 1884 and is currently classified within the tribe Trimerotropini. At least two species are recognized: Conozoa sulcifrons (Scudder) and Conozoa texana (Bruner). These grasshoppers are distributed across western North America, with records from the southwestern United States and northern Mexico. The genus is characterized by morphological features typical of the Oedipodinae, including banded wings and adaptations for life in arid and semi-arid grassland environments.
bandwinged-grasshopper Oedipodinae Trimerotropini western-Nearctic nocturnal-light-attraction
Cosumnoperla
Cosumnoperla is a genus of stoneflies in the family Perlodidae, established by Szczytko & Bottorff in 1987. It is classified within the subfamily Isoperlinae and is endemic to California. The genus represents a small group of western Nearctic perlodid stoneflies.
endemic California stonefly western-Nearctic
Delphiphylus affiguratus
Delphiphylus affiguratus is a small plant bug in the family Miridae, subfamily Phylinae. The species was originally described by Uhler in 1895 as Phytocoris affiguratus, later transferred to Hoplomachus, and most recently placed in Delphiphylus by Pagola-Carte and Matocq in 2020. It is known from a small number of records in Colorado, USA.
Miridae Phylinae plant-bug Western-Nearctic Colorado-endemic
Diplotaxis fimbriata
May beetle, junebug
Diplotaxis fimbriata is a species of scarab beetle in the family Scarabaeidae, commonly referred to as a May beetle or junebug. The species was described by Fall in 1909 and occurs in the western Nearctic region. It is found in California (USA) and Baja California (Mexico), representing a relatively restricted geographic range within the genus Diplotaxis. Like other members of the tribe Diplotaxini, adults are likely nocturnal and attracted to light sources.
scarabaeidae melolonthinae diplotaxini may-beetle junebug western-nearctic california baja-california nocturnal scarab-beetle
Euptychodera corrugata
Euptychodera corrugata is a species of shield-backed bug in the family Scutelleridae, first described by Van Duzee in 1904. It belongs to a genus of true bugs characterized by greatly enlarged scutella that cover most of the abdomen and wings. The species has been documented in the western Nearctic region, particularly in California. Available records are sparse, with limited published information on its biology and ecology.
Scutelleridae shield-backed-bug Heteroptera western-Nearctic California
Exaeretia ciniflonella
Scotch flat-body
Exaeretia ciniflonella is a small moth in the family Depressariidae with a trans-Palearctic and western Nearctic distribution. Adults have a wingspan of 17–24 mm and are active from July through August, with individuals sometimes reappearing in early spring after overwintering. Larvae develop within rolled or folded leaves of birch, poplar, and willow.
leaf-roller overwintering-adult trans-Palearctic western-Nearctic Betula-feeder Populus-feeder Salix-feeder
Lasioglossum mesillense
Lasioglossum mesillense is a 'red-tailed' sweat bee in the subgenus Lasioglossum (Dialictus), originally described from New Mexico in 1898. The species was recently revised in a comprehensive treatment of western Nearctic Dialictus, during which two junior synonyms were newly recognized and a lectotype was designated. As with other members of this large subgenus, it is a small, ground-nesting bee. The specific epithet references Mesilla, New Mexico, the type locality.
sweat-bee Dialictus red-tailed ground-nesting western-Nearctic taxonomy lectotype-designated
Lasiopogon albidus
Lasiopogon albidus is a species of robber fly (Diptera: Asilidae) in the genus Lasiopogon, originally described by Cole & Wilcox in 1938. It belongs to the bivittatus section of the genus, a group of western Nearctic species. The species was redescribed in a 2021 taxonomic revision that included 13 new species descriptions and updated the phylogeny of the genus using molecular data. As with other robber flies, it is presumed to be a predatory insect, though specific biological details for this species remain poorly documented.
robber-fly Asilidae bivittatus-section western-Nearctic predatory-fly
Lasiopogon bivittatus
Lasiopogon bivittatus is a species of robber fly (Diptera: Asilidae) in the bivittatus section of the genus Lasiopogon. The species was described by Loew in 1866 and has been the subject of cytological studies examining spermatogenesis. Recent taxonomic revision of the bivittatus section included redescription of this species and molecular phylogenetic analysis placing it within a clade of western Nearctic Lasiopogon species.
robber-fly Asilidae Diptera bivittatus-section western-Nearctic cytology spermatogenesis Loew-1866
Lasiopogon odontotus
Lasiopogon odontotus is a species of robber fly (Asilidae) described in 2020 from the western Nearctic region. It belongs to the bivittatus section of the genus Lasiopogon, a group characterized by specific morphological features and molecular signatures. The species was established through integrated taxonomic revision combining molecular phylogenetic analysis and morphological study.
robber-fly new-species western-Nearctic
Megalopsallus rubropictipes
Megalopsallus rubropictipes is a species of plant bug in the family Miridae, subfamily Phylinae. It was described by Knight in 1927. The species is distributed across western North America, with records from the western United States and Canada. As a member of the genus Megalopsallus, it belongs to a group of small, often inconspicuous phytophagous mirids associated with various host plants.
Miridae Phylinae plant-bug western-Nearctic North-America
Megalopsallus sparsus
Megalopsallus sparsus is a small plant bug in the family Miridae, first described from the western Nearctic region. It belongs to a genus of conifer-inhabiting phyline plant bugs. The species has been recorded from arid and semi-arid regions of western North America, including the southwestern United States and adjacent Mexico.
Miridae Phylinae Hemiptera western-Nearctic conifer-associated plant-bug
Microchaetina
Microchaetina is a genus of tachinid flies in the subfamily Dexiinae, tribe Dexiini. The genus was described by Wulp in 1891 and contains nine described species. It is predominantly distributed in western and southwestern North America. Biological and host relationships remain poorly documented.
Tachinidae Dexiinae Dexiini parasitoid-flies North-America western-Nearctic poorly-known-biology taxonomic-key-available
Nasusina
Nasusina is a genus of small geometrid moths in the subfamily Larentiinae, established by Pearsall in 1908. The genus contains five described species distributed in western North America, ranging from California to British Columbia. Members are characterized by their diminutive size and relatively plain wing patterns. The genus name reflects the distinctive snout-like projection of the labial palps in some species.
Geometridae Larentiinae moths North-America western-Nearctic 1908-description Pearsall small-moths geometer-moths carpets-and-pugs
Patriciola
Patriciola is a monotypic genus of snout moths in the family Pyralidae, subfamily Phycitinae, established by Carl Heinrich in 1956. The genus contains a single species, Patriciola semicana, described in the same publication. Records indicate a restricted distribution in western North America.
monotypic phycitinae western-nearctic
Piesma costata
Piesma costata is a true bug in the family Piesmatidae, first described by Uhler in 1895. The species is documented from the western United States, specifically California, Colorado, and Arizona. Records indicate its presence in the Western Nearctic region. As a member of Piesmatidae, it belongs to a small family of seed bugs with specialized morphological adaptations.
western-nearctic forensic-entomology
Pseudopsallus sericatus
Pseudopsallus sericatus is a species of plant bug in the family Miridae. It is found in North America, with records from Canada (Alberta, Saskatchewan) and the United States (Colorado, Montana, South Dakota). The species was described by Uhler in 1895. Little is known about its specific biology or ecology.
plant-bug Miridae Hemiptera North-America western-Nearctic
Spilodiscus sellatus
clown beetle
Spilodiscus sellatus is a species of clown beetle (family Histeridae) described by LeConte in 1857. It is found in western North America, with records from Canada, the United States, and possibly Mexico. The species belongs to a genus characterized by distinctive elytral markings.
Histeridae clown-beetle North-America western-Nearctic
Sternidius chemsaki
A small longhorned beetle in the tribe Acanthocinini, described by Lewis in 1977. The genus Sternidius contains numerous small, often morphologically similar species that have undergone significant taxonomic revision. Specimens are typically collected by beating woody vegetation, particularly in western North America. The species is part of a genus that has experienced synonymization and revalidation of taxa based on subsequent revisionary work.
Cerambycidae Lamiinae Acanthocinini longhorned-beetle small-cerambycid western-Nearctic