Texas
Guides
Stenomorpha furcata
Stenomorpha furcata is a darkling beetle in the family Tenebrionidae, subfamily Pimeliinae, tribe Asidini. Originally described by Champion in 1892, it was transferred to the genus Stenomorpha by Smith, Miller, and Wheeler in 2011 as part of a taxonomic revision that established the informal 'furcata species group' within Stenomorpha. This group comprises four species: S. furcata, S. roosevelti, S. wickhami, and S. granicollis. The species has been documented in Texas, USA, where it has been observed at night near blacklight setups in juniper chaparral habitat.
Stenopodius martini
Stenopodius martini is a species of leaf beetle in the family Chrysomelidae, described by Blaisdell in 1939. It belongs to the subfamily Cassidinae, a group commonly known as tortoise beetles or hispine beetles. The species is known from the southwestern United States. Its food plant remains unknown, though adults have been collected on Sphaeralcea species.
Strangalia virilis
strange virile bycid
Strangalia virilis is a species of flower longhorn beetle in the family Cerambycidae. It occurs in North America, with documented records from Texas and Oklahoma. The species is associated with flowering plants, particularly Torilis arvensis (erect hedge parsley). It was described by LeConte in 1873.
Strigoderma knausi
A small scarab beetle endemic to the Great Plains sand dune systems of south-central Kansas, Oklahoma, and northern Texas. Males are frequently encountered by sweeping low vegetation or at light traps, where they adopt a characteristic horizontal posture with forelegs extended and antennal clubs spread to detect female sex pheromones. The species was described from specimens collected by Warren Knaus in 1923–1925 at the type locality near Medora, Kansas, and named in his honor. Females are extraordinarily rare in collections, with only a single specimen among nearly 100 examined by Bader (1992).
Strigoderma teapensis
Strigoderma teapensis is a small scarab beetle in the family Scarabaeidae, subfamily Rutelinae. The species was described by Bates in 1888 from Teapa, Tabasco, Mexico. It occurs in eastern Mexico and has been recorded in southern Texas, USA. Like other members of the genus Strigoderma, it is likely associated with sandy or open habitats, though specific ecological details remain poorly documented.
Strymon albata
White Scrub-Hairstreak, white hairstreak
Strymon albata, the white hairstreak or white scrub-hairstreak, is a small lycaenid butterfly distributed from southern Texas through Central America to northern South America. Adults are active year-round in tropical regions and from June to December in southern Texas. The species inhabits second growth and shrubby fields in seasonally dry tropical lowlands. Larvae feed specifically on flower buds and young fruits of Abutilon incanum, while adults nectar on various flowers including blue boneset.
Strymon alea
Lacey's Scrub-Hairstreak, Alea Hairstreak
Strymon alea is a small hairstreak butterfly in the family Lycaenidae, first described by Godman and Salvin in 1887. It ranges from northwestern Costa Rica through Mexico to central and southern Texas, occupying subtropical thorn scrub habitat. The species has a wingspan of 19–29 mm. Adults feed on flower nectar, while larvae feed specifically on Bernardia myricaefolia buds and flowers.
Stygobromus russelli
Russell's Cave Amphipod, Russell stygobromid
Stygobromus russelli is a subterranean amphipod species in the family Crangonyctidae, endemic to Texas in the United States. As a stygobiont, it inhabits groundwater systems in cave environments. The species was originally described by Holsinger in 1967 under the basionym Stygonectes russelli. Like other members of the genus Stygobromus, it exhibits troglomorphic adaptations including reduced pigmentation and eye development associated with life in permanent darkness.
Stygoparnus
Comal Springs dryopid beetle (for sole species S. comalensis)
Stygoparnus is a monotypic genus of dryopid beetles containing the single species Stygoparnus comalensis, known as the Comal Springs dryopid beetle. The genus is endemic to central Texas spring systems fed by the Edwards Aquifer. Its sole member is a federally endangered, subterranean-obligate aquatic beetle with vestigial eyes and reduced pigmentation. The genus represents the only known aquatic lineage within the family Dryopidae.
Symmetrischema lectulifera
Symmetrischema lectulifera is a small gelechiid moth described by Edward Meyrick in 1929. It is known from a limited number of records in Texas, with a wingspan of 13–16 mm. The species belongs to a genus whose members are often associated with Solanaceae plants.
Syndelphax nigripennis
Syndelphax nigripennis is a species of planthopper in the family Delphacidae, first described by Crawford in 1914. The species is characterized by dark wing coloration as indicated by its specific epithet. It belongs to a genus of small, delicate planthoppers typically associated with grass and sedge habitats. Records indicate occurrence in the Caribbean region and Texas.
Systasea pulverulenta
Texas Powdered Skipper
Systasea pulverulenta, commonly known as the Texas Powdered Skipper, is a small butterfly in the family Hesperiidae. It ranges from southern and western Texas through Mexico to Guatemala. Adults are active year-round in southern Texas, with flight recorded from February through December. The species is associated with Malvaceae host plants for larval development.
Systena sexnotata
six-spotted flea beetle
Systena sexnotata is a flea beetle in the family Chrysomelidae. Adults feed on walnut foliage (Juglandaceae), while larvae feed on roots. The species is restricted to Central and Western Texas. Body length ranges from 4.8 to 5.5 millimeters.
Tanaostigmodes albiclavus
Tanaostigmodes albiclavus is a species of chalcid wasp in the family Tanaostigmatidae, first described by Girault in 1917. The species is known from the southwestern United States. Members of this family are gall wasps associated with plants, though specific host relationships for this species remain poorly documented.
Tanymecus texanus
Tanymecus texanus is a broad-nosed weevil in the family Curculionidae, first described by Van Dyke in 1935. The species is known from the southwestern United States, specifically Texas and New Mexico. As a member of the genus Tanymecus, it belongs to a group of weevils characterized by their elongated snouts and association with herbaceous plants.
Telamonanthe rileyi
Telamonanthe rileyi is a treehopper species in the family Membracidae, subfamily Smiliinae, and tribe Telamonini. The species was described by Goding in 1892. It is part of a genus characterized by distinctive pronotal modifications typical of treehoppers. Based on collection records, it occurs in Texas and potentially other parts of the southern and central United States. As with other members of Membracidae, it is presumed to feed on plant sap using piercing-sucking mouthparts, though specific host plants for this species have not been documented in the available sources.
Telegeusis texensis
Texas long-lipped beetle
Telegeusis texensis is a species of long-lipped beetle in the family Telegeusidae, described in 2001 from Texas. Males exhibit distinct seasonal appearance and diel flight activity patterns. The species is one of few documented members of this small, enigmatic beetle family.
Temnothorax texanus
Texas Acorn Ant
Temnothorax texanus is a species of acorn ant in the genus Temnothorax, described by Wheeler in 1903. The species is native to Texas and surrounding regions, where it inhabits small cavities such as hollow nuts, twigs, and other pre-existing shelters. Like other members of its genus, it is a small, cavity-nesting ant with a specialized lifestyle dependent on finding and occupying suitable microhabitats. The species has been documented in entomological collections and is recognized as part of the diverse North American Temnothorax fauna.
Tetraclipeoides texanus
Tetraclipeoides texanus is a small scarab beetle in the family Scarabaeidae, subfamily Aphodiinae, described by Gordon and Skelley in 2007. The species epithet 'texanus' indicates its association with Texas. As a member of the Aphodiinae, it belongs to a group commonly known as small dung beetles or aphodiine dung beetles, though specific ecological details for this species remain poorly documented.
Tetralimonius ornatulus
Tetralimonius ornatulus is a species of click beetle in the family Elateridae. Based on available collection records, this species has been documented in western Texas and New Mexico, with specimens collected from soapberry (Sapindus saponaria) vegetation. Adults have been observed during late spring and early summer, with collection dates in May and June. The species appears to be associated with riparian and woodland habitats where its host plants occur.
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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hotographydrone-imageryLiDARradarsonarseismicgeophysicalgeochemicalbiogeochemicalecoinformaticsbioinformaticscomputational-biologysystems-biologysynthetic-biologybiotechnologynanotechnologygenetic-engineeringgenome-editingCRISPRTALENzinc-finger-nucleasetransgeniccisgenicintragenicsubgenicagrobacterium-mediated-transformationbiolisticselectroporationmicroinjectionprotoplast-fusionsomatic-hybridizationcybridasymmetric-hybridsynthetic-polyploiddoubled-haploidhaploid-inductionanther-culturemicrospore-cultureovule-cultureembryo-cultureendosperm-cultureprotoplast-culturecell-culturetissue-cultureorgan-cultureshoot-cultureroot-culturecallus-culturesuspension-culturebioreactorhairy-root-culturetransformationhardeningmicropropagationclonal-propagationmeristem-cultureshoot-tip-cultureaxillary-bud-culturenodal-cultureleaf-culturepetiole-culturestem-cultureinternode-culturerhizome-culturebulb-culturecorm-culturetuber-cultureseed-culturezygotic-embryo-culturesomatic-embryo-culturesomatic-embryogenesisorganogenesiscaulogenesisrhizogenesisadventitious-shoot-formationdirect-regenerationindirect-regenerationprimary-metabolismsecondary-metabolismbiosynthesisbiotransformationbioconversionbiodegradationbioremediationphytoremediationmycoremediationzooremediationbioaugmentationbiostimulationnatural-attenuationmonitored-natural-attenuationengineered-natural-attenuationpermeable-reactive-barrierpump-and-treatsoil-vapor-extractionair-spargingthermal-desorptionincinerationlandfillingcontainmentcappingslurry-wallgrout-curtainsheet-pilingclay-linergeomembranegeotextilegeogridgeocompositegeosyntheticgeofabricgeonetgeocellgeopipegeostripgeofoamgeobaggeotubegeocontainergeomatgeoblanketgeospacergeodraingeoinjectiongeogroutgeopiergeocolumngeopilegeowallgeobermgeotrenchgeocutgeofillgeoliftgeoslabgeopanelgeoblockgeobrickgeotilegeopavergeowebgeomattressgeocushionTexamaurops reddelli
Kretschmarr Cave Mold Beetle
Texamaurops reddelli is a small, eyeless cave-dwelling beetle in the family Staphylinidae, subfamily Pselaphinae. It is known from a single cave system in Texas and is one of the most narrowly distributed cave beetles in North America. The species was described in 1963 and is considered vulnerable due to its restricted range and habitat specificity. Like other pselaphine beetles, it likely feeds on fungal hyphae and organic detritus in humid cave microhabitats.
Texania fulleri
Texania fulleri is a species of metallic wood-boring beetle in the family Buprestidae. The species is known from North America, with confirmed records from western Texas. Larvae have been documented developing in the sapwood of dead Celtis laevigata (sugarberry). Adults likely emerge from host wood, though specific adult activity patterns remain poorly documented.
Tragidion armatum
Tragidion armatum is a longhorn beetle (Cerambycidae) found in the southwestern United States and Mexico. Adults exhibit bright orange and black coloration that mimics tarantula hawk wasps (Pompilidae: Pepsis, Hemipepsis). The species breeds in dead flower stalks of Yucca and Agave plants. It was described by LeConte in 1858, with T. armatum brevipenne later synonymized under it.
Traxus fulvus
Traxus fulvus is a species of planthopper in the family Issidae, first described by Metcalf in 1923. It belongs to the tribe Thioniini within the subfamily Issinae. The species is recorded from the southern United States and northeastern Mexico, with confirmed observations from Texas, Hidalgo, and Tamaulipas. Like other issid planthoppers, it is presumed to feed on plant phloem, though specific host plants remain unrecorded.
Triarius lividus
skeletonizing leaf beetle, flea beetle
Triarius lividus is a species of skeletonizing leaf beetle in the family Chrysomelidae. It occurs in Central America and North America, with documented presence from Arizona to western Texas. The species is characterized by skeletonizing feeding damage on host plants. It is one of relatively few species in the genus Triarius.
Triatoma gerstaeckeri
kissing bug, blood-sucking conenose
Triatoma gerstaeckeri is a triatomine bug (subfamily Triatominae) and a documented vector of Trypanosoma cruzi, the protozoan parasite causing Chagas disease. Adults measure 20–30 mm in length. The species occurs from the southwestern United States (New Mexico, Texas) through northeastern Mexico, occupying dry scrubland habitats with strong associations to woodrat (Neotoma) nests. It exhibits paurometabolous development with five nymphal instars before adulthood. The species is notable for its relatively high T. cruzi infection rates in some populations and its propensity for peridomestic occurrence near human habitation.
Triatoma indictiva
kissing bug
Triatoma indictiva is a blood-sucking assassin bug in the subfamily Triatominae, commonly known as a "kissing bug." It is a documented vector of Trypanosoma cruzi, the protozoan parasite that causes Chagas disease. The species occurs in Mexico and the southern United States, particularly Arizona and Texas. Adults measure 20–30 mm in length and are characterized by a pear-shaped body, black coloration with red lateral markings, and a tapered proboscis. Like other triatomines, it is primarily associated with vertebrate hosts in natural and peridomestic habitats.
Tricholita knudsoni
Tricholita knudsoni is a species of owlet moth described in 2009 from western Texas. It is a relatively small noctuid with a wingspan of 33–35 mm. The species is known from a restricted geographic range in the Trans-Pecos region, with all documented records from light trap collections between late August and late October. It was described by Crabo and Lafontaine during their revision of related noctuid genera.
Trigonidomimus belfragei
Belfrage's Cricket
Trigonidomimus belfragei, commonly known as Belfrage's Cricket, is a species of cricket in the family Gryllidae, first described by Caudell in 1912. The species is classified within the subfamily Pentacentrinae, a group sometimes referred to as anomalous crickets. It occurs in parts of North America including Texas, Oklahoma, and Mexico. The genus Trigonidomimus is small and poorly documented, with limited biological information available for this species.
Trox frontera
Trox frontera is a hide beetle in the family Trogidae, first described by Vaurie in 1955. It is currently treated as a synonym of Glyptotrox frontera. Members of this genus are cryptic beetles that specialize in consuming dried animal remains, including skin, hair, feathers, and connective tissue. They are among the final colonizers of carcasses, arriving after most other insects have departed.
Tytthus balli
Tytthus balli is a species of plant bug in the family Miridae, described by Knight in 1931. It belongs to the genus Tytthus, which comprises small predatory mirids known for feeding on mite eggs. The species has been recorded from Florida and Texas in the United States. Like other members of its genus, it likely plays a role in biological control of pest mites in agricultural and natural systems.
Udea octosignalis
Udea octosignalis is a small moth in the family Crambidae, described by George Duryea Hulst in 1886. It is known from limited records in California and Texas. The species has a wingspan of approximately 20 mm and exhibits distinctive light ocherous forewings with buff markings.
Ursia furtiva
Ursia furtiva is a moth species in the family Notodontidae, first described by André Blanchard in 1971. It is endemic to Texas in the United States. The species is known from very few records, with only one observation documented on iNaturalist. Its larvae feed on specific Prunus species native to the region.
Vaejovis chisos
Vaejovis chisos is a species of scorpion in the family Vaejovidae, described by Sissom in 1990. It belongs to the genus Vaejovis, a group of scorpions commonly referred to as mountain scorpions. The species is native to North America and is part of the diverse scorpion fauna of the southwestern United States and northern Mexico region.
Vella fallax texana
Vella fallax texana is a subspecies of giant antlion in the family Myrmeleontidae. Adults are among the largest antlions in North America, with wingspans exceeding 100 mm. The species is nocturnal and frequently attracted to lights. Larvae are predatory but do not construct the characteristic pit traps of some antlion genera; instead they bury themselves just below the soil surface to ambush prey.
Xanthonia marquai
Davis Mountains Juniper Xanthonian
Xanthonia marquai is a recently described species of leaf beetle (Chrysomelidae) endemic to the Davis Mountains in western Texas. The species was described in 2019 and is known from a single iNaturalist observation. It is associated with juniper vegetation in montane habitats.
Xanthostege plana
Xanthostege plana is a crambid moth described by Augustus Radcliffe Grote in 1883. The species is distinguished by its striking wing coloration: dark yellow forewings with a contrasting pinkish-red fringe and translucent straw-colored hindwings. It occurs in the southwestern United States, with confirmed records from Arizona and Texas.
Xenorhipis hidalgoensis
Xenorhipis hidalgoensis is a small metallic wood-boring beetle in the family Buprestidae, notable for extreme sexual dimorphism in antennal structure. Males possess highly modified flabellate (comb-like) antennae with expanded distal segments covered in olfactory sensillae, while females retain typical serrate antennae. The species was first described from Hidalgo County, Texas, and is among the least frequently encountered buprestids in North America.
Xerociris wilsonii
Wilson's Wood-nymph Moth
Xerociris wilsonii, commonly known as Wilson's Wood-nymph Moth, is a monotypic species in the family Noctuidae, subfamily Agaristinae. The genus was erected by Theodore Dru Alison Cockerell in 1904, with the species originally described by Augustus Radcliffe Grote in 1863. It is found in the US state of Texas and has been recorded in North America.
Xeropsamobeus ambiguus
Xeropsamobeus ambiguus is a species of aphodiine dung beetle in the family Scarabaeidae. It was described by Fall in 1907 and is found in North America. The genus Xeropsamobeus is a small group within the dung beetle subfamily Aphodiinae.
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.
Zagloba hystrix
Zagloba hystrix is a minute lady beetle species in the family Coccinellidae, first described by Casey in 1899. Adults measure approximately 1.45–1.75 mm in length. The species is known from North America, with confirmed records from Texas. It is among the smallest coccinellid beetles documented in the region.
Zale chisosensis
Zale chisosensis is a species of moth in the family Erebidae, first described in 1982. It belongs to the genus Zale, a group of moths commonly known as zale moths. The species is found in North America. Like other members of its genus, it is a nocturnal moth whose larvae feed on woody plants.
Zanysson texanus
Zanysson texanus is a species of wasp in the family Crabronidae, subfamily Bembicinae. It was originally described as Nysson texanus by Cresson in 1873. The genus Zanysson belongs to the tribe Nyssonini, a group of solitary wasps commonly known as cuckoo wasps or kleptoparasitic wasps that typically exploit the nests of other wasps. The species epithet 'texanus' indicates a Texas association, likely referring to the type locality or primary distribution.
Zopherus nodulosus
Ironclad beetle
Zopherus nodulosus is a species of ironclad beetle in the family Zopheridae, named for the nodular bumps on its dorsal surface. The species occurs in Central America and North America, with recognized subspecies including Z. n. haldemani (Texas ironclad beetle) and Z. n. nodulosus. These beetles possess exceptionally hardened exoskeletons that make them notoriously difficult to pin, a trait shared with other members of the genus Zopherus.