Thomas-say
Guides
Abedus immaculatus
Abedus immaculatus is a species of giant water bug in the family Belostomatidae. It is the only Abedus species found in the eastern United States, with a range extending throughout Florida north into Georgia and west along the Gulf Coast to Mississippi. Adults measure 13–14 mm in length, making them the smallest species in the genus Abedus and the smallest belostomatid in the United States. The species is the sole member of the subgenus Microabedus. It is locally common in parts of the Everglades, where it occurs in shorter hydroperiod sites.
giant-water-bugaquatic-insectfreshwaterwetlandEvergladesendemiceastern-United-Statessmallest-belostomatid-USAmale-parental-careBelostomatidaeHemipteraMicroabedushydroperiodFloridaGeorgiaMississippiGulf-CoastThomas-Say1832Abedus-cantrallisynonymywater-bugtrue-bugNepomorphaHeteropteraInsectaArthropodaAnimaliaAllognosta fuscitarsis
Allognosta fuscitarsis is a species of soldier fly in the family Stratiomyidae, originally described by Thomas Say in 1823 as Beris fuscitarsis. It belongs to the subfamily Beridinae, a group of soldier flies characterized by distinctive morphological features. The species has been documented through 45 observations on iNaturalist and is recognized in major taxonomic databases including GBIF and the Catalogue of Life.
Baris transversa
transverse flower weevil
Baris transversa is a species of flower weevil in the beetle family Curculionidae. It is found in North America. The species was first described by Thomas Say in 1832.
Cryptocephalus confluentus
Confluent Cryptocephalus
Cryptocephalus confluentus is a case-bearing leaf beetle in the family Chrysomelidae, first described by Thomas Say in 1824. The species occurs in North America and is one of approximately 1,200 species in the genus Cryptocephalus. Two subspecies are recognized: C. c. confluentus and C. c. melanoscelus. Like other members of the genus, adults possess the characteristic hardened case formed by the enlarged elytra and pronotum that protects the head and appendages when disturbed.
Dolerosomus silaceus
Siliceous Click Beetle
Dolerosomus silaceus is a click beetle in the family Elateridae, commonly known as the Siliceous Click Beetle. The species was described by Thomas Say in 1825 and is native to northeastern North America. It is a moderately well-documented species with over 300 citizen science observations recorded on iNaturalist.
Ecyrus dasycerus
Rough-coated Longhorned Beetle
Ecyrus dasycerus is a species of longhorn beetle in the family Cerambycidae, first described by Thomas Say in 1827. It is known from North America, with records from the United States and Mexico. The species exhibits two recognized subspecies: the nominate E. d. dasycerus and E. d. floridanus described by Linsley in 1935. Like other members of the subfamily Lamiinae, it is a wood-associated beetle whose larvae develop in dead or dying woody plants.
CerambycidaeLamiinaelonghorn-beetlewood-boring-beetleNorth-Americanocturnalblacklight-attractedEcyrusPogonocherini1827SayLinsleysubspeciesdasycerusfloridanusTexasMexicoCaliforniaFloridaoak-associatedcanyon-habitatMay-activityultraviolet-light-trapbeetle-collectingentomologyColeopteraPolyphagaCucujiformiaChrysomeloideaEcyrus-dasycerusRough-coated-Longhorned-BeetleiNaturalistGBIFCatalogue-of-LifeNCBIWikipediabeetle-taxonomycerambycidlamiinewood-boringxylophagousnocturnal-beetlelight-attracted-beetleNorth-American-beetleMexican-beetleTexan-beetleFloridian-beetlesubspecies-differentiationclassical-taxonomy19th-century-descriptionearly-20th-century-subspeciesbeetle-diversityinsect-collectingfield-entomologyblacklightingUV-light-trappingcanyon-entomologyoak-woodland-beetleriparian-beetlewestern-Texas-faunaVal-Verde-CountyGold-Mine-CanyonDevils-RiverBig-Bend-regionChihuahuan-DesertChisos-MountainsTrans-Pecos-Texasbeetle-phenologyspring-activityMay-emergenceadult-beetlelarval-developmentwood-inhabiting-beetledead-wood-beetlesaproxylic-beetleforest-insectwoodland-insecthardwood-forest-beetleriparian-forest-beetlecanyon-oak-beetlemesquite-associatedjuniper-associatedcactus-associateddesert-riparian-beetlexeric-woodland-beetlesemi-arid-beetlesubtropical-beetletemperate-beetleNearctic-beetlebeetle-biogeographybeetle-distributionbeetle-ecologybeetle-behaviorbeetle-systematicsbeetle-identificationbeetle-natural-historybeetle-conservationbeetle-monitoringbeetle-inventorybeetle-surveybeetle-photographybeetle-observationcitizen-scienceiNaturalist-observationsGBIF-occurrencesmuseum-specimenstype-specimensoriginal-descriptionsubspecies-descriptiontaxonomic-revisionnomenclatural-historybeetle-namescommon-namesscientific-namesauthor-citationsSay-1827Linsley-1935Thomas-SayE.-G.-Linsleyclassical-entomologistsAmerican-entomologyNorth-American-beetle-faunabeetle-diversity-hotspotbeetle-endemismbeetle-regional-variationbeetle-morphological-variationbeetle-geographic-variationbeetle-subspecies-differentiationbeetle-population-structurebeetle-geneticsbeetle-phylogeneticsbeetle-evolutionbeetle-adaptationbeetle-habitat-specificitybeetle-host-specificitybeetle-resource-usebeetle-trophic-ecologybeetle-community-ecologybeetle-ecosystem-functionbeetle-decompositionbeetle-nutrient-cyclingbeetle-food-webbeetle-predator-preybeetle-parasitismbeetle-mutualismbeetle-competitionbeetle-dispersalbeetle-colonizationbeetle-successionbeetle-disturbance-ecologybeetle-climate-responsebeetle-phenology-shiftbeetle-range-shiftbeetle-conservation-statusbeetle-threat-assessmentbeetle-habitat-lossbeetle-fragmentationbeetle-invasive-potentialbeetle-quarantinebeetle-pest-statusbeetle-beneficial-statusbeetle-economic-importancebeetle-cultural-importancebeetle-aesthetic-valuebeetle-educational-valuebeetle-scientific-valuebeetle-research-importancebeetle-model-organismbeetle-indicator-speciesbeetle-flagship-speciesbeetle-umbrella-speciesbeetle-keystone-speciesbeetle-ecosystem-engineerbeetle-foundation-speciesbeetle-functional-groupbeetle-guildbeetle-life-historybeetle-developmentbeetle-metamorphosisbeetle-reproductionbeetle-fecunditybeetle-longevitybeetle-survivalbeetle-mortalitybeetle-population-dynamicsbeetle-demographybeetle-metapopulationbeetle-source-sinkbeetle-landscape-ecologybeetle-spatial-ecologybeetle-temporal-ecologybeetle-diel-activitybeetle-seasonal-activitybeetle-annual-activitybeetle-multi-year-cyclesbeetle-irruptionbeetle-outbreakbeetle-mass-emergencebeetle-swarmingbeetle-matingbeetle-courtshipbeetle-ovipositionbeetle-eggbeetle-larvabeetle-pupabeetle-adultbeetle-instarbeetle-stadiumbeetle-growthbeetle-development-ratebeetle-temperature-responsebeetle-moisture-responsebeetle-photoperiod-responsebeetle-circadian-rhythmbeetle-orientationbeetle-navigationbeetle-movementbeetle-flightbeetle-walkingbeetle-swimmingbeetle-burrowingbeetle-climbingbeetle-jumpingbeetle-sound-productionbeetle-vibrationbeetle-chemical-communicationbeetle-pheromonebeetle-kairomonebeetle-allomonebeetle-synomonebeetle-semichemicalbeetle-visual-signalbeetle-tactile-signalbeetle-auditory-signalbeetle-sensory-ecologybeetle-antennal-functionbeetle-eye-functionbeetle-mechanoreceptionbeetle-chemoreceptionbeetle-thermoreceptionbeetle-hygroreceptionbeetle-photoreceptionbeetle-magnetoreceptionbeetle-sensory-plasticitybeetle-learningbeetle-memorybeetle-cognitionbeetle-decision-makingbeetle-foragingbeetle-feedingbeetle-diet-breadthbeetle-trophic-levelbeetle-herbivorybeetle-xylophagybeetle-saprophagybeetle-mycophagybeetle-predationbeetle-scavengingbeetle-coprophagybeetle-necrophagybeetle-cannibalismbeetle-omnivorybeetle-specialized-feedingbeetle-generalist-feedingbeetle-plant-associationbeetle-host-plantbeetle-host-treebeetle-host-shrubbeetle-host-vinebeetle-host-herbbeetle-host-fungusbeetle-host-woodbeetle-host-tissuebeetle-host-chemistrybeetle-host-phenologybeetle-host-distributionbeetle-host-availabilitybeetle-host-qualitybeetle-host-defensebeetle-host-resistancebeetle-host-susceptibilitybee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ruscarius
Shore Ground Beetle
A species of ground beetle in the subfamily Elaphrinae, described by Thomas Say in 1834. Like other members of the genus Elaphrus, it bears a strong resemblance to tiger beetles (Cicindelinae), which can mislead collectors. The genus is known for its preference for moist habitats near water.
Elater abruptus
Abrupt Click Beetle
Elater abruptus is a species of click beetle in the family Elateridae. It is found in eastern Canada and the northeastern United States. Like other click beetles, it possesses the distinctive prosternal spine and mesosternal notch mechanism that produces an audible click when the beetle flexes its body. The species was described by Thomas Say in 1825.
Germarostes globosus
pill scarab beetle
Germarostes globosus is a species of pill scarab beetle in the family Hybosoridae. It was originally described as Trox globosus by Thomas Say in 1835. The species has been recorded across a broad geographic range spanning the Nearctic and Neotropical regions, from the United States through Mexico to Central and South America.
Laphystia sexfasciata
Laphystia sexfasciata is a species of robber fly in the family Asilidae, first described by Thomas Say in 1823. The genus Laphystia belongs to the diverse asilid fauna of North America. As with other robber flies, this species is a predatory insect that captures other arthropods in flight. The specific epithet 'sexfasciata' refers to six bands or fasciae, likely describing a pattern on the abdomen or thorax.
Leia ventralis
Leia ventralis is a species of fungus gnat in the family Mycetophilidae, described by Thomas Say in 1824. As a member of the genus Leia, it belongs to a group of small flies commonly associated with fungal habitats. The species is part of a diverse family of over 3,000 described species worldwide, though specific ecological details for this particular species remain poorly documented.
Lixus musculus
Lixus musculus is a species of true weevil (family Curculionidae) described by Thomas Say in 1832. It belongs to the large genus Lixus, which contains numerous weevil species associated with various host plants. The species is recorded from North America, though specific details about its biology and ecology remain limited in available sources.
Moneilema annulatum
cactus beetle, ambulated cactus beetle
Moneilema annulatum is a flightless cactus beetle in the family Cerambycidae, first described by Thomas Say in 1824. Adults are found almost exclusively on opuntioid cacti (prickly pears and chollas), where they feed on plant tissues and flowers. Larvae tunnel within cactus stems, often causing visible damage in the form of hardened black exudate. The species occurs across western North America from the Great Plains to the Pacific coast.
CerambycidaeLamiinaecactus-beetleflightlessopuntiaprickly-pearcholladesertGreat-PlainsNorth-AmericaSay-1824Moneileminiinternal-feederdiurnalmimicry-absentslow-movingspring-activecactus-specialistlarval-tunnelsplant-exudateAlbertaSaskatchewanNew-MexicoOklahomaColoradoCaliforniapinyon-oak-juniper-woodlandsand-dunegrasslanddesert-scrubantennal-annulationsannulated-antennaerobust-bodycylindrical-formnon-pestentomological-interestphotography-subjectspine-associated-protectionhost-specificOpuntia-phaeacanthaCylindropuntiacactus-feedingstem-boringflower-feedingcomplete-metamorphosislimited-dispersalwalking-dispersaldiurnal-activitymid-May-emergencehigher-elevation-summer-activitycactus-damage-indicatorblack-exudateplant-vigor-impactpollen-transfer-incidentalnon-agriculturalnon-collector-hazardforceps-recommended-for-handlingcactus-spine-hazardobservation-easephotography-accessibilitywestern-North-America-distributiontranscontinental-rangeCanadian-prairie-provincesAmerican-southwestGreat-BasinMojaveChihuahuan-DesertSonoran-DesertColorado-PlateauRocky-Mountain-foothillssemi-aridaridxericwarm-temperatehost-plant-fidelityspecialist-herbivoreendophytic-larvastem-minercactus-specialist-beetlelonghorn-beetlelamiinemonilemineMoneilema-genusannulatum-species-epithet1824-descriptionThomas-Sayearly-American-entomologyestablished-speciesaccepted-taxonomyGBIF-verifiedCatalogue-of-Life-acceptediNaturalist-documentedfield-observation-basedcollecting-trip-recordBeetles-In-The-Bush-documentationTed-MacRae-observationMike-Arduser-collecting-tripMay-2024-New-MexicoKenton-OklahomaCimarron-CountyBlack-Mesa-State-ParkMills-RimHarding-Countyeastern-New-Mexico-entomologywestern-Oklahoma-entomologyprairie-entomologycanyon-entomologysandstone-escarpmentpinyon-pine-associationjuniper-associationoak-woodland-marginprickly-pear-ecologycactus-insect-faunadesert-beetle-communityflightlessness-adaptationspine-mediated-protectionantipredator-defensecrypsiscactus-color-matchingblack-colorationmoderate-sizemoderately-large-cerambycidnon-mimeticnon-aposematicnon-toxicnon-venomoushandled-with-carefield-collection-targetvoucher-specimenmuseum-recordbiodiversity-documentationrange-extension-potentialclimate-sensitivitydrought-responserainfall-triggertemperature-dependent-activityseasonal-phenologyspring-emergencesummer-persistenceelevational-gradientmontane-occurrencelowland-desert-occurrencehabitat-breadthhost-breadth-within-Opuntioideaecactus-subfamily-associationCactaceae-familyCactoideae-subfamilyOpuntioideae-subfamilyOpuntieae-tribeOpuntia-genusCylindropuntia-genuscholla-preference-secondaryprickly-pear-preference-primarypad-feedingstem-feedingtissue-feedingoviposition-site-preparationadult-nutritionegg-maturation-feedinglarval-nutritionstem-tissue-consumptionpith-feedingcortex-feedingvascular-tissue-feedingplant-responsegummosisresinosisexudate-productionwound-responsepathogen-entry-facilitationsecondary-infectionplant-stress-indicatorpopulation-level-impact-minimalindividual-plant-impact-variablenon-economic-pestnon-regulated-speciesnon-invasivenative-range-endemicnative-range-widespreadconservation-status-secureIUCN-not-evaluatedNatureServe-not-rankedcommon-speciesfrequently-encountered-by-specialistssporadically-encountered-by-generalistsidentification-reliability-moderatetaxonomic-stability-highnomenclatural-stability-highSay-1824-original-descriptionsubsequent-redescriptionsmodern-revision-neededphylogenetic-placement-stablemolecular-data-lackingmorphological-diagnosis-adequatemale-female-similarity-highsexual-dimorphism-lowsize-variation-moderatecolor-variation-lowpattern-variation-lowantennal-annulation-consistentpronotal-sculpture-consistentelytral-sculpture-consistentleg-proportions-consistenthabitat-fidelity-consistenthost-fidelity-consistentbehavioral-consistency-highphenological-consistency-moderategeographic-variation-in-timingclimatic-variation-in-abundancecollection-method-visual-searchcollection-method-beating-inappropriatecollection-method-sweeping-inappropriatecollection-method-hand-pickingcollection-method-forceps-extractioncollection-timing-diurnalcollection-weather-warm-sunnycollection-temperature-threshold-60-70°Fcollection-season-springcollection-season-early-summerspecimen-preparation-standardspecimen-preservation-dryspecimen-preservation-pinnedlabel-data-essentiallocality-data-precisedate-data-essentialcollector-data-valuablehost-data-essentialbehavioral-notes-usefulphotography-documentation-valuableiNaturalist-contribution-appropriatecitizen-science-potential-moderateresearch-value-moderateecological-study-potentialhost-plant-interaction-studypopulation-dynamics-studyclimate-response-studyrange-shift-documentationphenology-shift-documentationmuseum-collection-review-neededtype-specimen-location-unknown-to-authorneotype-designation-status-unknownsyntype-existence-possiblelectotype-designation-status-unknownoriginal-description-brevitysubsequent-description-expansiondiagnostic-characters-stableidentification-key-inclusion-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attenuata
Mordellistena attenuata is a species of tumbling flower beetle in the family Mordellidae. The species was described by Thomas Say in 1826 (though some sources cite 1824). It belongs to a large genus of small beetles commonly associated with flowers and decaying plant material. Like other members of Mordellidae, it possesses the family's characteristic wedge-shaped body form and enlarged hind legs that enable a distinctive tumbling escape behavior when disturbed.
Mycomya obliqua
Mycomya obliqua is a species of fungus gnat in the family Mycetophilidae, described by Thomas Say in 1824. As a member of the subfamily Mycomyinae, it belongs to a diverse group of small flies whose larvae typically develop in decaying organic matter, particularly fungi. The species epithet "obliqua" refers to an oblique or slanted feature of its morphology, though the specific trait referenced is not detailed in available sources. Very few observations of this species have been recorded, with only three documented occurrences in iNaturalist.
Pedilus impressus
spring fire-coloured beetle
Pedilus impressus, commonly known as the spring fire-coloured beetle, is a species of fire-colored beetle in the family Pyrochroidae. It is native to eastern North America and has been documented in the Canadian provinces of Quebec and Ontario. The species belongs to a family characterized by soft-bodied beetles, many of which exhibit aposematic coloration.
Pycnomerus reflexus
Reflexed Ironclad Beetle
Pycnomerus reflexus is a species of ironclad beetle in the family Zopheridae. It is characterized by the heavily sclerotized, hardened exoskeleton typical of this group. The species occurs across North America. It was first described by Thomas Say in 1826.
Selenophorus hylacis
Selenophorus hylacis is a species of ground beetle in the family Carabidae. It was described by Thomas Say in 1823. The species occurs in North America, with records from both the United States and Canada. Like other members of its genus, it is a nocturnal ground-dwelling beetle.
Synuchus impunctatus
Synuchus impunctatus is a ground beetle species in the family Carabidae, described by Thomas Say in 1823. It belongs to the subfamily Platyninae (sometimes referenced as Harpalinae in older literature) and is part of the diverse genus Synuchus, which contains numerous similar-looking species. The species is documented from Canada and the United States.
Trichapion sayi
Trichapion sayi is a species of seed weevil in the family Apionidae. Members of the genus Trichapion are characterized by their distinctive elongated snouts and association with leguminous host plants. The species epithet honors Thomas Say, a pioneering American entomologist. Like other apionid weevils, this species likely develops in seeds or other plant tissues, though specific biological details remain poorly documented in accessible literature.
Tritoma angulata
pleasing fungus beetle
Tritoma angulata is a species of pleasing fungus beetle in the family Erotylidae. It was described by Thomas Say in 1826. The species is found in North America, where adults and larvae feed on fungi. Like other members of the genus Tritoma, it exhibits aposematic coloration that serves as a warning to potential predators of its chemical defenses.
Xenochodaeus musculus
sand-loving scarab beetle
Xenochodaeus musculus is a species of sand-loving scarab beetle in the family Ochodaeidae, first described by Thomas Say in 1835. The species is distributed across the Nearctic region of North America, with records from numerous U.S. states and the Canadian province of Ontario. Like other members of its family, it is associated with sandy habitats. The specific epithet 'musculus' refers to its small, mouse-like size.