Rarely-observed
Guides
Drionia
Drionia is a genus of leafhoppers in the family Cicadellidae, subfamily Deltocephalinae, tribe Athysanini. Described by Ball in 1915, this genus belongs to the subtribe Cochlorhinina. The genus is poorly documented in scientific literature, with minimal published information on its biology and ecology. Records indicate very few observations, suggesting either genuine rarity or undercollection.
Eanus albertanus
Eanus albertanus is a species of click beetle (family Elateridae) described by W.J. Brown in 1930. The species is native to western Canada, with confirmed records from Alberta and British Columbia. Like other members of Elateridae, it possesses the characteristic clicking mechanism used to right itself when overturned. Available information on this species is limited, reflecting its restricted geographic range and apparent rarity in collections.
Eccoptomera simplex
Eccoptomera simplex is a species of true fly in the family Heleomyzidae, described by Coquillett in 1904. The genus Eccoptomera is part of a family of small to medium-sized flies commonly associated with decaying organic matter. Very few observations of this species have been recorded, with only two documented observations in iNaturalist as of the knowledge cutoff.
Elachiptera angusta
frit fly
Elachiptera angusta is a species of frit fly in the family Chloropidae, originally described by Sabrosky in 1948. The species is currently recognized as a synonym of Ceratobarys angusta. It belongs to the subfamily Oscinellinae and tribe Elachipterini. Very few observations of this species have been documented, with only three records in iNaturalist.
Elatotrypes
Elatotrypes is a monotypic genus of longhorn beetles (family Cerambycidae) containing a single described species, Elatotrypes hoferi. The genus was established by Fisher in 1919 and is classified within the tribe Callidiini of the subfamily Cerambycinae. Very little is known about the biology or natural history of this genus due to its rarity and limited documentation.
Enoclerus hoegei
Enoclerus hoegei is a species of checkered beetle in the family Cleridae. The species was originally described by Gorham in 1883 under the genus Cymatodera, and is currently recognized as a valid species within the large genus Enoclerus, which contains 32 species in North America north of Mexico. Very few observations of this species exist in public databases. The genus Enoclerus is characterized by bright coloration and bold patterning, with many species exhibiting mimicry of velvet ants (Mutillidae) and other hymenopterans.
Ephippiphora imitativa
Ephippiphora imitativa is a species of tortrix moth in the family Tortricidae. The specific epithet "imitativa" suggests a resemblance to other species. Based on the small number of iNaturalist observations (8), it appears to be rarely encountered or poorly known. As a member of Tortricidae, it likely possesses the characteristic bell-shaped resting posture and forewings that fold over the abdomen.
Ephuta pauxilla
Ephuta pauxilla is a species of velvet ant in the family Mutillidae. The genus Ephuta contains small to medium-sized mutillids found primarily in North America. Like all velvet ants, females are wingless and wasp-like in appearance, while males possess wings. The species is poorly documented with minimal published information available.
Eremopedes kelsoensis
Kelso Shieldback
Eremopedes kelsoensis, known as the Kelso Shieldback, is a shield-backed katydid described by Tinkham in 1972. It belongs to the family Tettigoniidae, which includes katydids and bush crickets. The species is found in California, North America. Very few observations of this species have been documented.
Escaria
Escaria is a genus of moths in the family Noctuidae, containing two described species: E. clauda and E. homogena. The genus was established by Grote in 1882 and is classified within the subfamily Noctuinae and tribe Hadenini. Both species are native to North America. The genus is rarely encountered, with minimal observational records available.
Eschatomoxys andrewsi
Eschatomoxys andrewsi is a darkling beetle (family Tenebrionidae) described by Aalbu & Thomas in 2008. The genus Eschatomoxys belongs to the diverse beetle family Tenebrionidae, commonly known as darkling beetles, which are primarily detritivores and scavengers. This species is known from extremely limited occurrence records, with only a single observation documented on iNaturalist.
Estoloides aquilonius
Estoloides aquilonius is a longhorn beetle species in the family Cerambycidae, described by Linsley and Chemsak in 1984. It is known from the United States. As a member of the subfamily Lamiinae and tribe Desmiphorini, it belongs to a diverse group of wood-boring beetles. Very few observations of this species have been documented.
Eucosma essexana
Essex phaneta moth, Essex Eucosma Moth
Eucosma essexana is a small tortricid moth described by Kearfott in 1907. The species is known from limited observations and is assigned Hodges number 2910 in North American moth classification systems. It belongs to the diverse genus Eucosma, which contains numerous small, often poorly known species of leafroller moths.
Euhyparpax
Euhyparpax is a genus of moths in the family Notodontidae, erected by Edna Libby Beutenmüller in 1893. The genus contains two described species: Euhyparpax amatame (Dyar, 1916) and Euhyparpax rosea Beutenmüller, 1893. These moths belong to the subfamily Heterocampinae, commonly known as prominents. The genus is rarely encountered, with only two observations documented on iNaturalist.
Eumesosoma nigrum
Eumesosoma nigrum is a species of harvestman (Opiliones) in the family Sclerosomatidae, first described by Thomas Say in 1821. The species is known from very few observations, with only three records documented in iNaturalist. As a member of the Leiobuninae subfamily, it belongs to a group of long-legged harvestmen commonly found in North America.
Euplastius melsheimeri
Euplastius melsheimeri is a species of click beetle in the family Elateridae. The genus Euplastius is poorly documented in published literature, and this species is known from very few observations. As with other elaterids, adults possess the characteristic clicking mechanism formed by the prosternal process and mesosternal receptacle that enables their jumping escape response. The species epithet honors American entomologist Frederick Ernst Melsheimer.
Evita
Evita is a monotypic genus of moths in the family Geometridae, described by Capps in 1943. It belongs to the subfamily Ennominae, one of the largest subfamilies of geometer moths. The genus is known from very few observations, with only two records documented on iNaturalist.
Evita hyalinaria
Evita hyalinaria is the sole species in the monotypic genus Evita, described by Grossbeck in 1908. It is a geometrid moth found in southwestern North America. The genus was established by Hahn William Capps in 1943. Very few observations exist, with only one documented occurrence in iNaturalist.
Exoprosopa painterorum
Exoprosopa painterorum is a species of bee fly in the family Bombyliidae, described by Johnson & Johnson in 1960. It belongs to the subfamily Anthracinae and tribe Exoprosopini. The species is named in honor of the Painter family, likely referring to entomologists associated with this group. Very few observations of this species have been documented.
Fala
Fala is a genus of moths in the family Noctuidae, subfamily Stiriinae, established by Grote in 1875. The genus belongs to the tribe Stiriini and is part of the diverse noctuid moth fauna. Members of this genus are classified within the superfamily Noctuoidea, one of the largest groups of Lepidoptera. Very few observations of Fala species have been documented, with only 8 records reported to iNaturalist, suggesting either rarity, cryptic habits, or limited survey effort.
Filatima hemicrossa
Filatima hemicrossa is a small gelechiid moth with a wingspan of 20–21 mm. It occurs in scattered localities across North America including Texas, Montana, and Florida. Adults are active during spring, with flight records from April to May.
Frechinia criddlealis
Frechinia criddlealis is a moth species in the family Crambidae, subfamily Odontiinae. It was described by Canadian entomologist Eugene G. Munroe in 1951. The species is known from a limited number of records across western and central North America, including Arizona, Colorado, Kansas, and Manitoba. Its biology remains poorly documented.
Gambrinus crotchii
Gambrinus crotchii is a species of click beetle in the family Elateridae, described by Horn. The genus Gambrinus is a small group within the click beetles, and this species appears to be rarely encountered with very few documented observations. The species name honors George Henry Crotch, a 19th-century entomologist known for his work on Coleoptera.
Gambrinus lanchesteri
Gambrinus lanchesteri is a species of click beetle in the family Elateridae. Very few observations of this species exist in scientific databases, indicating it is either rare, poorly surveyed, or restricted to specific habitats. The genus Gambrinus is not well studied, and most species within it remain poorly known. Available information about this species is extremely limited.
Gambrinus sinuifrons
Gambrinus sinuifrons is a species of click beetle in the family Elateridae. The genus Gambrinus is poorly documented in published literature, and this species is known from very few observations. It belongs to a group of beetles characterized by an elongated body form and the ability to produce an audible clicking sound through a prosternal-mesosternal locking mechanism. Available information about this species is extremely limited.
Gloveria howardi
Gloveria howardi is a moth species in the family Lasiocampidae, described by Dyar in 1896. Originally placed in the genus Dendrolimus, it was later transferred to Gloveria. The species is known from very few observations, with only two research-grade records documented in iNaturalist. As a member of the tent caterpillar family Lasiocampidae, adults are presumed to be non-feeding with reduced mouthparts, though this has not been directly confirmed for this species.
Graphops cavani
Graphops cavani is a species of leaf beetle in the family Chrysomelidae. The genus Graphops contains species commonly known as flea beetles or leaf beetles, many of which are associated with specific host plants. Very little published information exists specifically for G. cavani, with only two observations recorded on iNaturalist as of the source date. The species appears to be rarely encountered or underreported.
Hadronemidea
Hadronemidea is a genus of plant bugs in the family Miridae, established by Reuter in 1907. The genus contains two described species: Hadronemidea echinata (Gruetzmacher & Schaffner, 1977) and Hadronemidea esau Reuter, 1908. As members of Miridae, these are true bugs (Hemiptera) with piercing-sucking mouthparts. The genus is rarely encountered, with only eight observations recorded on iNaturalist.
Haematochiton
Haematochiton is a genus of pleasing fungus beetles in the family Erotylidae, established by Gorham in 1888. The genus contains at least three described species: H. bisculptum, H. carbonarius, and H. elateroides. These beetles belong to a family commonly associated with fungal associations. Knowledge of this genus is limited, with few observations documented.
Haida
Haida is a genus of rove beetles (family Staphylinidae) described by Keen in 1897. It belongs to the subfamily Omaliinae and tribe Coryphiini. The genus is rarely encountered, with limited observational records.
Helesius
Helesius is a genus of lady beetles (family Coccinellidae) containing two described species: Helesius nigripennis and Helesius nubilans. The genus was established by Casey in 1899. These beetles are part of the diverse Coccinellidae family, though specific ecological details remain poorly documented.
Heliolonche celeris
Heliolonche celeris is a noctuid moth described by Augustus Radcliffe Grote in 1873. It belongs to the subfamily Heliothinae within the owlet moth family Noctuidae. The species is endemic to California and comprises two recognized subspecies: the nominate H. c. celeris and H. c. melicleptrioides. Available records indicate it is rarely encountered, with few documented observations.
Hemihoplis
Hemihoplis is a genus of ichneumonid wasps established by Heinrich in 1960. The genus belongs to the family Ichneumonidae, one of the largest families of parasitoid wasps. Very few observations of this genus exist in public databases, with only three records on iNaturalist as of the knowledge cutoff. The genus name suggests a morphological relationship to the genus Hoplis, with 'hemi-' indicating a partial or intermediate condition.
Herreshoffia
Herreshoffia is a genus of moths in the family Geometridae, subfamily Larentiinae. The genus was established by Sperry in 1949 and is considered valid by Catalogue of Life, though GBIF marks it as doubtful. Very few observations exist, with only two records documented on iNaturalist. The genus appears to be poorly known, with limited published information available.
Hesperanoplium
Hesperanoplium is a genus of longhorn beetles (Cerambycidae) established by Linsley in 1957. The genus contains two described species: H. antennatum (Linsley, 1932) and H. notabile (Knull, 1947). It belongs to the tribe Hesperophanini within the subfamily Cerambycinae. The genus is poorly documented in scientific literature, with minimal observational records.
Heteropogon rubrifasciatus
Heteropogon rubrifasciatus is a species of robber fly in the family Asilidae, subfamily Brachyrhopalinae. The genus Heteropogon comprises small to medium-sized predatory flies known for their distinctive courtship behaviors. Like other asilids, they are aerial predators that capture other insects in flight. This species was described by Bromley in 1931. Very few specific observations of H. rubrifasciatus have been documented, with only 13 records in iNaturalist as of the knowledge cutoff.
Homoanarta peralta
Homoanarta peralta is a species of moth in the family Noctuidae, first described by William Barnes in 1907. It belongs to the tribe Eriopygini within the subfamily Noctuinae. The genus Homoanarta contains multiple species distributed in North America. Very few observations of this species have been recorded, with only two documented observations in iNaturalist as of the available data.
Hulstina xera
Hulstina xera is a species of geometrid moth in the family Geometridae, subfamily Ennominae. It was described by Rindge in 1970. The species is known from North America. Like other geometrid moths, adults likely have the characteristic slender bodies and broad wings typical of the family. Very little specific biological information has been published for this species.
Hybomitra aequetincta
Hybomitra aequetincta is a species of horse fly in the family Tabanidae. It belongs to the genus Hybomitra, a group known for fast-flying, robust-bodied flies. The species was described by Becker in 1900. Like other horse flies, adults are likely to be diurnal and females are presumed to be blood-feeders, though specific details for this species are poorly documented. It is among the lesser-known members of a genus containing some of the fastest flying insects recorded.
Hybrizon rileyi
Hybrizon rileyi is a species of parasitoid wasp in the family Ichneumonidae, subfamily Hybrizontinae. All members of this subfamily are specialized ant parasitoids, representing the third most diverse group of ant parasitoid wasps after Eucharitidae and Neoneurini. The species was described by Ashmead in 1889. Like other Hybrizontinae, it likely parasitizes ant larvae, though specific host records for this species remain poorly documented.
Ichneumon lacrymans
Ichneumon lacrymans is a species of ichneumon wasp in the family Ichneumonidae, described by Provancher in 1875. It belongs to the highly diverse genus Ichneumon, one of the largest genera within this wasp family. The species is known from very few observations, with only two records documented on iNaturalist. Like other ichneumon wasps, it is presumed to be parasitoid, though specific host relationships and biological details remain undocumented in available sources.
Johannsenomyia annulicornis
Johannsenomyia annulicornis is a species of biting midge in the family Ceratopogonidae, described by Malloch in 1918. It belongs to the tribe Sphaeromiini within the subfamily Ceratopogoninae. The genus Johannsenomyia comprises small, delicate flies associated with aquatic or semi-aquatic habitats. Specific ecological details for this species remain poorly documented.
Kaira hiteae
Kaira hiteae is a species of orb-weaving spider in the family Araneidae, described by Levi in 1977. The genus Kaira is notable for containing relatively small, specialized orb-weavers. Very few observations of this species have been documented, with only three records on iNaturalist.
Knudsonia
Knudsonia is a genus of moths in the family Geometridae. The genus was established to accommodate species previously placed in other genera within the subfamily Ennominae. Very few observations of this genus exist in public databases, suggesting it is either rare, poorly sampled, or restricted in distribution. The genus is named in honor of the lepidopterist Edward C. Knudson.
Kuschelina flavocyanea
Kuschelina flavocyanea is a leaf beetle species in the family Chrysomelidae, originally described by Crotch in 1873. The species is known from North America and has been documented in very few observations, suggesting it may be uncommon or underreported. As a member of the genus Kuschelina, it belongs to a group of flea beetles characterized by enlarged hind femora adapted for jumping. Detailed biological information remains limited due to its apparent rarity in collections and observations.
Lacconotus pinicola
Lacconotus pinicola is a beetle species in the family Mycteridae, first described by Horn in 1879. The species epithet 'pinicola' suggests an association with pine (Pinus), though specific ecological relationships remain poorly documented. It is known from North America, with distribution records including British Columbia, Canada. The species is rarely encountered, with only six observations recorded on iNaturalist.
Laccornis latens
Laccornis latens is a species of predaceous diving beetle in the family Dytiscidae. It was described by Fall in 1937. The species is known from North America, with confirmed records from New Brunswick and Nova Scotia in Canada.
Lampronia oregonella
Lampronia oregonella is a small moth species in the family Prodoxidae, first described by Walsingham in 1880. It is known from a limited number of observations in western North America. The larvae have been documented feeding on Heuchera species.
Lampronia sublustris
Lampronia sublustris is a small moth in the family Prodoxidae, first described by Annette Braun in 1925. It occurs in western North America from southern British Columbia to northern California, with eastern records extending to Alberta, Utah, and Colorado. The species belongs to a family of primitive moths that includes yucca moths, though its specific biology remains poorly documented. Records of this species are sparse, with limited observational data available.
Laphystia tolandi
Laphystia tolandi is a species of robber fly in the family Asilidae, described by Wilcox in 1960. As a member of the genus Laphystia, it belongs to a group of predatory flies known for their aerial hunting behavior. The species is recognized in taxonomic databases but remains poorly documented in biological literature.