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Eustala
humpbacked orb-weavers
Eustala is a genus of orb-weaver spiders in the family Araneidae, first described by Eugène Simon in 1895. As of November 2024, the genus contains 87 species distributed primarily across the Americas, from the United States through Central America to South America, with highest diversity in Brazil, Uruguay, and Argentina. Several species have been documented exhibiting specialized ecological relationships, including myrmecophily (living among ants) in Central American species that inhabit ant-defended acacia plants. The genus includes the well-known humpbacked orb-weaver, Eustala anastera, found across North and Central America.
Araneidaeorb-weaverspiderhumpbackedmyrmecophilyant-plant-mutualismNeotropicalNearcticEustala-anasteraEustala-oblongaEustala-illicitaweb-buildingpredatoracaciaPseudomyrmexPanamaBrazilGalápagosSimon-1895arachnologyentomologytropical-ecologycommensalismontogenyballooningoverwinteringjuvenilespider-wasp-preyCaliadurgus-hyalinatushost-parasitoid-interactionsthird-party-exploitationmutualism-exploitationcryptic-colorationnocturnal-foragingdiurnal-hiding-behaviorthorn-defenseorb-web-architecturesawtoothed-webpopulation-ecologysubstrate-selectionspatial-distributionspecies-diversityendemic-speciestaxonomic-revisionnomen-dubiumgenitalic-morphologymicroscopy-identificationtemperate-North-AmericaCentral-AmericaSouth-AmericaCaribbeanPacific-islandsconservation-biologyclimate-change-vulnerabilityphenology-disruptionwinter-activityspring-emergenceforest-understorydry-forestmoist-forestripariangrasslandscrubedge-habitatwoodlandparklandurban-adaptedgeneralist-predatorspecialist-predatorant-alate-predationherbivore-interceptionecosystem-servicebiological-controlnatural-historyfield-identificationcryptic-species-complexsexual-dimorphismwingless-female-mothsballooning-dispersalsilk-productionweb-ontogenyinstar-developmentoverwintering-strategycold-hardinessmetabolic-suppressiondiapausevoltinismunivoltinebivoltinemultivoltineseasonal-polyphenismcolor-morphpattern-polymorphismhabitat-specificityhost-plant-specificityant-colony-integrationalarm-pheromone-avoidancesting-avoidancepredator-avoidancebird-predationlizard-predationwasp-predationassassin-bug-predationstink-bug-predationdefensive-behaviorthanatosiscamouflagemasquerademimicryaggressive-mimicryforaging-ecologyprey-captureweb-maintenanceweb-repairsilk-recyclingenergeticsreproductive-outputfecundityegg-sac-constructionmaternal-caremale-searching-behaviormate-locationpheromone-communicationvibratory-communicationvisual-signalingterritorialityweb-site-fidelityweb-site-tenacitydispersal-behaviorcolonization-abilityrange-expansioninvasive-potentialnon-native-speciesintroduced-speciessynanthropicagricultural-landscapeorchardvineyardforest-plantationconservation-statusdata-deficientIUCNCITESprotected-areanational-parksoberaniachiribiquetegalapagosfloreanaecuadorperuboliviachileargentinauruguayparaguayvenezuelacolombiacosta-ricanicaraguahondurasguatemalabelizemexicousacanadacubahispaniolajamaicapuerto-ricotrinidadtobagobarbadoslesser-antillesgreater-antilleswest-indiescaribbean-basinamazon-basinorinocoparanapantanalcerradocaatingaatlantic-forestpampaschacoyungasvaldivianmagellanicfynbosnoneresearch-modeleducational-resourcecitizen-scienceinaturalistgbifcatalogue-of-lifencbiwikipediazootaxajournal-of-natural-historypsycheentomology-todaybug-ericaraneologychelicerate-biologyarthropod-ecologytropical-biologyneotropical-faunanearctic-faunaholarticpantropicalgondwananbiogeographyphylogeographymolecular-systematicsmorphological-taxonomyintegrative-taxonomyspecies-conceptcryptic-diversityundescribed-speciesnew-species-descriptionredescriptionneotype-designationlectotype-designationtype-localitytype-specimenmuseum-collectionvoucher-specimendna-barcodingcoiitsphylogenomicstranscriptomicsproteomicsmetabolomicsecological-genomicsadaptationlocal-adaptationphenotypic-plasticitycanalizationevolutionary-developmental-biologyevo-devobehavioral-ecologysensory-ecologyvisual-ecologychemical-ecologymechanoreceptionproprioceptionneuroethologyhunting-behaviorweb-building-behaviorconstruction-behaviortool-useextended-phenotypeniche-constructionecosystem-engineeringtrophic-cascadefood-webenergy-flownutrient-cyclingdecompositionpredator-prey-dynamicspopulation-dynamicsmetapopulationsource-sink-dynamicshabitat-fragmentationedge-effectscorridorsconnectivitylandscape-ecologymacroecologybiogeochemistryclimate-envelopespecies-distribution-modelingmaxentbioclimworldclimremote-sensinggisspatial-analysisgeostatisticsabundancedensitybiomassproductivitydiversity-indexrichnessevennessdominancerarityendemismbeta-diversitygamma-diversityalpha-diversityturnovernestednesscommunity-assemblyneutral-theoryniche-theorycompetitionfacilitationapparent-competitionindirect-effectsinteraction-networksmutualismparasitismpredationherbivorydetritivoryscavengingcannibalismintraspecific-competitioninterspecific-competitioncharacter-displacementresource-partitioningniche-differentiationcoexistencestabilityresilienceresistancerecoverysuccessiondisturbanceperturbationextinctioncolonizationinvasionestablishmentspreadimpactrisk-assessmentmanagementcontroleradicationrestorationreintroductionrewildingconservation-breedingex-situin-situprotected-area-networkgap-analysissystematic-conservation-planningprioritizationhotspotcoldspotmajorityminorityflagshipumbrellakeystonefoundationecosystem-engineerindicatorsentinelbioindicatorbiomonitorecosystem-healthenvironmental-qualitypollutionpesticideheavy-metalcontaminantbioaccumulationbiomagnificationtoxicologyriskhazardexposuredose-responseno-observed-effect-concentrationlowest-observed-effect-concent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htperchroostnestdenburrowtunneldigexcavateminequarryextractremoveeliminateeradicateexterminatedestroydemolishruinwreckdamageharminjurehurtwoundmaimcripplelamedisableincapacitateparalyzestunshockastonishamazeastoundstaggerstupefydazebewilderconfusepuzzleperplexbafflemystifyenigmaNomotettix cristatus
crested pygmy grasshopper, crested grouse locust, northern crested grouse locust
Nomotettix cristatus is a small pygmy grasshopper in the family Tetrigidae, commonly known as the crested pygmy grasshopper or crested grouse locust. It is one of approximately 35 Nearctic species of Tetrigidae. The species exhibits three recognized subspecies with distinct geographic distributions across North America. Like other members of its family, it is characterized by an elongated pronotum that extends over the abdomen, a trait distinguishing pygmy grasshoppers from typical grasshoppers in Acrididae.
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