Undescribed-species
Guides
Tapinella undescribed
An undescribed species within the fungal genus Tapinella, a group of ectomycorrhizal or saprotrophic bolete relatives in the family Tapinellaceae. As a formally undescribed taxon, it lacks a published species epithet and has not been characterized in peer-reviewed literature. Species in this genus produce fleshy, often fan-shaped or bracket-like fruiting bodies with porous undersurfaces rather than gills. The existence of this undescribed entity suggests ongoing cryptic diversity within Tapinella that awaits taxonomic resolution.
Tetramesa
Tetramesa is a genus of minute phytophagous wasps in the family Eurytomidae comprising over 200 described species. Members are exclusively associated with grasses (Poaceae), where they typically induce stem or inflorescence galls. The genus exhibits pronounced host specificity, with most species restricted to a single grass species or closely related congeners. Several species have been deployed as biological control agents against invasive grasses, including T. romana for giant reed (Arundo donax) and candidate agents for medusahead (Taeniatherum caput-medusae) and African lovegrass (Eragrostis curvula). Adults feed on nectar. Recent phylogenomic studies have synonymized the genera Aiolomorphus and Cathilaria within Tetramesa.
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undescribed
An undescribed species in the longhorned beetle genus Tetropium, collected during nocturnal fieldwork in ponderosa pine forest in southwestern Utah. The specimen was found on the trunk of a large, recently-dead ponderosa pine alongside other woodboring beetles including Arhopalus species and Trogossitidae. This represents one of numerous undescribed cerambycid species awaiting formal taxonomic description.
Thalpius undescribed-two
Thalpius undescribed-two is an undescribed species in the click beetle family Eucnemidae, known from limited material. It belongs to a genus of false click beetles characterized by their inability to produce the clicking sound of true click beetles (Elateridae). The species awaits formal taxonomic description and is currently recognized only from a provisional designation used in collection databases.
Timulla floridensis
Timulla floridensis is a species of velvet ant in the family Mutillidae. The species was proposed in a 1980 Ph.D. dissertation by Sigurd Leopold Szerlip but remains officially undescribed and nomenclaturally invalid because the dissertation was never formally published. As a member of the genus Timulla, it is a wingless female wasp (males have wings) with a potent sting. The species is associated with Florida, where it frequents sun-dappled patches on the floor of deciduous forests.
Toxonprucha n-sp-one
Toxonprucha n-sp-one is a species of moth in the family Noctuidae, the owlet moths. It is part of a genus of small to medium-sized moths found primarily in North America. The species epithet 'n-sp-one' indicates this is a numbered undescribed species, suggesting it has been recognized as distinct but not yet formally described in the scientific literature.
Toxonprucha n-sp-two
Toxonprucha n-sp-two is a moth species in the family Erebidae, subfamily Herminiinae. The genus Toxonprucha comprises small to medium-sized moths primarily distributed in the Americas. This species is currently known from limited specimen records and has not been formally described with a binomial epithet.
Trichapion sp-nr-albidulum
Trichapion sp-nr-albidulum is an undescribed or near-identified species within the genus Trichapion, a group of small weevils in the family Brentidae. Members of this genus are characterized by their elongated, cylindrical bodies and distinctive rostrums. The 'sp-nr-albidulum' designation indicates a specimen that closely resembles T. albidulum but has not been formally confirmed to that species. These weevils are associated with leguminous host plants and are part of the diverse apionine fauna of North America.
Trichochrous sp-nova-prope-brevicornis
Trichochrous sp-nova-prope-brevicornis represents an undescribed species within the genus Trichochrous, a group of soft-bodied beetles in the family Melyridae. The provisional designation 'sp-nova-prope-brevicornis' indicates it is a new species closely related to T. brevicornis. Members of this genus are generally small, often hairy beetles with reduced elytra that expose much of the abdomen. The specific status and formal description of this taxon await completion of taxonomic study.
Trichochrous sp. nova prope pedalis
Trichochrous sp. nova prope pedalis is an undescribed species within the soft-winged flower beetle genus Trichochrous. The species epithet indicates it is a new species ('sp. nova') closely related to T. pedalis ('prope pedalis'). Members of this genus are small to medium-sized beetles associated with flowers and vegetation.
Trigonorhinus sp-one-nm
Trigonorhinus sp-one-nm is an undescribed or provisionally named species within the genus Trigonorhinus, a group of fungus weevils in the family Anthribidae. Species in this genus are small to medium-sized beetles associated with fungal substrates. The 'sp-one-nm' designation indicates this is a distinct morphospecies recognized from New Mexico, pending formal taxonomic description. Members of Trigonorhinus exhibit characteristic angular or trigonous rostral profiles that distinguish them from related anthribid genera.
Trimerotropis undescribed-species-a
An undescribed species within the bandwinged grasshopper genus Trimerotropis, recognized from specimens collected in the western United States. As an undescribed taxon, it lacks formal scientific description but has been documented in entomological surveys and collections. Species in this genus are typically associated with arid and semi-arid habitats, often exhibiting cryptic coloration and strong flight capabilities characteristic of Oedipodinae.
Trimerotropis undescribed-species-b
Trimerotropis undescribed-species-b is a bandwinged grasshopper in the genus Trimerotropis, a diverse group containing over 40 described species and several undescribed taxa. The genus is characterized by shared color patterns and structural features that make species-level identification challenging. Members of Trimerotropis are typically associated with arid and semi-arid habitats in western North America. This undescribed species has been documented in species lists for Colorado and Wyoming, indicating it occurs within the documented range of the genus but has not yet received formal taxonomic description.
Tritoxa undescribed-sp-apache
Tritoxa undescribed-sp-apache is an undescribed species within the genus Tritoxa, a group of picture-winged flies in the family Ulidiidae. The provisional name indicates this taxon has been recognized as distinct but not yet formally described in scientific literature. Members of Tritoxa are characterized by patterned wings and are often associated with decaying plant material. This particular species appears to be associated with the Apache region of North America.
Tycherus
Tycherus is a genus of parasitoid wasps in the family Ichneumonidae, first described by Förster in 1869. Species occur in Europe and North America, with records from Scandinavia, Denmark, Norway, Sweden, and eastern North America including Newfoundland and the Great Smoky Mountains. At least one species, Tycherus osculator, has been studied extensively as a biological control agent for tortricid forest pests. A specimen from the Great Smoky Mountains National Park identified via DNA barcoding likely represents an undescribed species.
Unnamed-near-cyphon obscurus
Unnamed-near-cyphon obscurus refers to an undescribed species closely related to Cyphon obscurus within the family Scirtidae (marsh beetles). These beetles are small, semi-aquatic insects associated with moist environments. The 'unnamed-near-' designation indicates a distinct but closely related taxon that has not yet received formal scientific description. Members of this group are characterized by their compact body form and association with wet habitats.
Xestocephalus
Xestocephalus is a genus of leafhoppers in the family Cicadellidae, subfamily Xestocephalinae. The genus contains multiple species characterized by distinctive head morphology and wing venation patterns. Species in this genus are generally small, compact leafhoppers with reduced or modified pronotal structures. The informal designation 'n-sp-nc' indicates an undescribed or newly collected species not yet formally named.
Xylesthia
Xylesthia is a genus of wall spiders in the family Oecobiidae, a group of small arachnids known for constructing flat, tangled webs on vertical surfaces such as walls, rocks, and tree trunks. These spiders are characterized by their compact bodies, relatively long legs, and distinctive spinneret arrangement. The genus is poorly documented in North American faunal surveys, with most species described from other regions. The 'n-sp' designation indicates an undescribed or unidentified species within the genus.
Ypsolopha sp-sw
Ypsolopha sp-sw is an undescribed species of moth in the family Ypsolophidae, a group characterized by distinctive resting postures and elusive adult behavior. The genus Ypsolopha comprises approximately 120 described species worldwide, with many species being difficult to collect due to their infrequent attraction to light and cryptic larval habits. This particular species designation (sp-sw) indicates it is an informal placeholder name, likely referring to a southwestern population or region, pending formal taxonomic description. Ypsolophid moths are known for their thermophilic tendencies and association with warmer habitats.
Yumachrysa unidentified-sp-texas
Yumachrysa unidentified-sp-texas is an undescribed or poorly documented species of green lacewing in the family Chrysopidae, subfamily Nothochrysinae. It represents a taxon recognized from specimens collected in Texas that has not been formally described in the scientific literature. Members of the genus Yumachrysa are relatively uncommon and understudied compared to other chrysopid genera. This taxon is distinguished from described Yumachrysa species by subtle morphological differences, though formal diagnostic characters remain unpublished.
Zanclognatha
Zanclognatha is a genus of moths in the family Erebidae, subfamily Herminiinae. Species in this genus are small to medium-sized moths with distinctive wing patterns. The genus is primarily Holarctic in distribution, with most species occurring in North America. The specific epithet "n-sp" indicates an undescribed or unidentified species within the genus.
Zelomorpha
Zelomorpha is a genus of parasitoid wasps in the family Braconidae (superfamily Ichneumonoidea). Members of this genus are part of the hyperdiverse ichneumonoid wasp fauna, with numerous species remaining undescribed. The genus was used as a case study to demonstrate a novel rapid species description protocol combining mitochondrial DNA sequences with lateral holotype images. Species in this genus are known from the Neotropical region, particularly Costa Rica.