Behavioral-manipulation
Guides
Acanthocephala
thorny-headed worms, spiny-headed worms, acanthocephalans
Acanthocephala is a phylum of obligate endoparasitic worms known as thorny-headed or spiny-headed worms, characterized by an eversible proboscis armed with recurved hooks used to attach to host intestinal walls. They lack a mouth and digestive system, absorbing nutrients directly through their tegument. The phylum contains approximately 1,200–1,420 described species with complex life cycles involving arthropod intermediate hosts and vertebrate definitive hosts. Recent molecular evidence indicates they are highly modified rotifers, now sometimes classified within Syndermata or Rotifera.
Acrotaphus
Acrotaphus is a genus of spider-attacking parasitoid wasps in the family Ichneumonidae, subfamily Pimplinae, tribe Ephialtini. The genus contains 27 described species distributed across the New World, with particularly high diversity in the Neotropics including the Brazilian Amazon. These wasps are ectoparasitoids of orb-weaver spiders in the families Araneidae and Tetragnathidae. A defining characteristic of the genus is the ability to induce behavioral modification in host spiders, causing them to construct specialized "cocoon webs" that support and protect the wasp pupae.
Allocyclosa bifurca
Bifurcate Trashline Orbweaver, Forked-tail Trashline Orbweaver
Allocyclosa bifurca is a small orb-weaving spider and the sole species in its genus. Adult females measure 5.1–8.5 mm in body length and are silvery or white in color. The species is distinguished by a forked (bifurcate) projection at the rear of the abdomen—two humps shaped like the letter 'M'—giving it the Latin name meaning 'two-forked.' This is the only Cyclosa-like species north of Mexico with this forked tail structure. The spider exhibits remarkable camouflage behavior, arranging debris and egg sacs in a vertical line through its web to masquerade as bird droppings. Unusually, males are rarely observed, and females possess vestigial external genitalia with no external opening, suggesting possible parthenogenic reproduction. The species is also notable as a host for parasitic wasps that chemically manipulate its web-building behavior.
Caecidotea
Caecidotea is a genus of freshwater isopods in the family Asellidae, containing over 100 described species in North America. Species occupy diverse aquatic habitats including surface waters (ponds, streams) and subterranean environments (caves, aquifers). The genus has been extensively studied for parasite-host interactions, particularly involving acanthocephalan parasites that modify host behavior. Some species exhibit morphological adaptations to subterranean life including reduced eyes and pigmentation.
Cyphomyrmex
fungus-growing ants
Cyphomyrmex is a genus of small, drab-colored fungus-growing ants in the tribe Attini, found primarily in the Neotropics. These ants cultivate fungi in the tribe Leucocoprineae as their primary food source, with most species growing fungal nodules rather than full mycelial gardens. Colonies are typically monogynous and small, rarely exceeding 500 workers. The genus is divided into two species complexes: the strigatus complex (South America only) and the rimosus complex (southern North America to South America). Cyphomyrmex represents a basal lineage among attine ants and serves as sister group to Mycetophylax.
fungus-growing-antsattine-antsMyrmicinaeNeotropicalmutualismfungicultureLeucocoprineaemonogynyparasitoid-waspssocial-parasitismchemical-ecologyalkaloid-venomnest-architecturebehavioral-plasticitycytogeneticschromosome-evolutionGuiana-ShieldBrazilPanamaPuerto-RicoMesoamericaArgentinaUnited-StatesTexasCaliforniaFloridayeast-gardensmycelial-gardensrimosus-complexstrigatus-complexage-polyethismtrophallaxisthanatosisfeigning-deathDiapriidaeAcanthopriaMimopriellaMegalomyrmexsocial-parasiteC.-longiscapusC.-transversusC.-laevigatusC.-rimosusC.-minutusC.-lectusC.-cornutusC.-costatuspheromones3-octanolfarnesenestrail-followingalarm-signaldiketopiperazinesantifungal-compoundsdefensive-behaviorcolony-defenseflight-responserecruitmentLanchester's-lawskaryotypechromosome-numberrDNAmicrosatellitesFISHchamber-depthgallery-lengthfire-disturbancesavanna-forest-transitionarboreal-nestingclay-auriclessoil-nestswood-nestsepiphytic-nestsmoss-nestscoconut-nestsdesiccation-susceptibilitymoist-habitatsbasal-attinephylogeneticssister-groupchemical-evolutionvenom-alkaloidsbehavioral-manipulationhost-parasite-interactionecosystem-engineeringnutrient-cyclingdecompositionorganic-matterinsect-fecesexoskeleton-substrategarden-transplantationworker-polymorphismqueen-numberdealate-queensalatesbrood-careecdysis-assistanceforagingsugar-collectionplant-exudatesfungal-domesticationnodule-cultivationmycelium-cultivationagricultural-behaviornest-entrancefunnel-structureexposed-gardenssymbiont-diversitygeographic-variationresearch-modelevolutionary-biologymutualism-evolutionant-fungus-coevolutionchemical-communicationsocial-insectseusocialitycolony-sizesmall-coloniesslow-movementcrypsisdebris-mimicrypredation-avoidanceparasitoid-defensewasp-killingcolony-abandonmentresource-rescuethief-ant-defensevenom-resistancetoxicity-tolerancebehavioral-suppressionplaying-deadalkaloid-manipulationfungal-secondary-metabolitesantibacterial-compoundsantiviral-compoundsgarden-protectionmicrobial-defensenest-microclimatetemperature-regulationhumidity-requirementsdepth-effectsfire-adaptationdisturbance-ecologyhabitat-specificitysubstrate-specializationclay-constructionsoil-manipulationarchitectural-plasticityvertical-nestingembankment-nestingoverhang-nestingpendant-nestsswallow-nest-mimicryresearch-accessibilityfield-biologytropical-ecologyNeotropical-myrmecologybiodiversityconservationinvasive-species-contextnative-speciesbiological-controlIntegrated-Pest-Managementagricultural-ecologyforest-ecologysavanna-ecologytransitional-habitatsdisturbed-areasurban-ecologyanthropogenic-impactclimate-sensitivityhabitat-limitationrange-boundariesdispersalcolonizationestablishmentpopulation-dynamicsdemographycolony-densitynest-spacingintraspecific-competitioninterspecific-competitionterritorialityresource-defensecombat-behavioraggression-levelsrecruitment-behaviorchemical-signalingalarm-pheromonestrail-pheromonesrecognition-cuescuticular-hydrocarbonsvenom-compositiondefensive-secretionsmandibular-glandsDufour's-glandmetapleural-glandsantibiotic-productiongrooming-behaviorfungal-inoculationintegumental-fungiyeast-growthlarval-groominggarden-maintenancesubstrate-preparationfecal-fertilizeranal-trophallaxiscrop-regurgitationfluid-applicationdrying-behaviornodule-formationtransplantation-behaviorgarden-establishmentceiling-gardensroot-associationarchitectural-innovationnest-site-selectionmicrohabitat-choicemoisture-requirementsthermal-bufferingpredator-avoidanceparasite-avoidancedisease-resistancesocial-immunitycollective-behaviordivision-of-labortask-allocationtemporal-polyethismworker-agenurse-workersforager-workerssoldier-caste-absencemonomorphismworker-size-variationqueen-worker-differentiationreproductive-castegyne-productionmale-productionseasonal-reproductioncolony-foundingclaustral-foundingnon-claustral-foundingfungal-inoculumfounding-queenfirst-worker-generationnutritional-dependencyfat-reservesmetabolic-adaptationdigestive-physiologyenzyme-complementfungal-enzymelignocellulose-degradationnutritional-mutualismobligate-mutualismvertical-transmissionhorizontal-transmissionsymbiont-switchingcultivar-replacementgarden-failurecolony-mortalitypopulation-turnovergeneration-timelongevitysurvivorshiplife-expectancyagingsenescencereproductive-investmentcolony-growthcolony-declinebuddingfissionreproduction-modegenetic-structurerelatednessmating-systemnuptial-flightmate-choicesperm-storagecolony-odornestmate-recognitionforeign-rejectionagonistic-behaviorterritorial-markingboundary-defenseraiding-behaviorrobbing-behaviorcleptobiosisdulosisslaveryinquilinismguest-antsmyrmecophilesnest-associatescommensalisminquilinesparasite-tolerancehost-manipulationvenom-alkaloidpyrrolidineindolizidinepiperidinenonanalfarnesenesesquiterpeneagriculture-chemicalgaster-extractchemical-diversitychemical-simplicityevolutionary-precursorderived-chemistrybiosynthetic-pathwaysemiochemicalinfochemicalcommunicationinformation-transfercolony-organizationsocial-structurepolygynyqueen-conditiondealationwing-sheddin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Eruga is a genus of ichneumon wasps in the tribe Ephialtini, comprising approximately 15 species distributed across the Afrotropical, Nearctic, and Neotropical regions. Members of this genus are ectoparasitoids of spiders, specifically targeting species in the families Linyphiidae and Tetragnathidae. The genus is notable for behavioral manipulation of host spiders, inducing them to construct modified 'cocoon webs' that support and protect the wasp's pupal cocoon.
Glyptapanteles
Glyptapanteles is a genus of koinobiont endoparasitoid wasps in the family Braconidae, distributed across all continents except Antarctica. Species in this genus are distinguished by their ability to manipulate host behavior: after larval emergence from caterpillar hosts, the paralyzed host remains near the pupal cocoons and defends them against predators through violent thrashing movements. This behavioral manipulation is mediated by one or two larvae that remain within the host and sacrifice their own development to protect their siblings. Several species have been evaluated for biological control of lepidopteran pests, particularly Lymantria dispar.
Halictoxenos
Halictoxenos is a genus of strepsipteran insects (twisted-wing parasites) in the family Stylopidae. The genus comprises approximately 23 species distributed across Asia, Europe, Africa, and the Americas, with a primarily Holarctic distribution. All species are obligate endoparasites of bees in the family Halictidae, particularly the subfamily Halictinae. The genus was established by W. Dwight Pierce in 1909.
Nemobius
wood cricket, ground cricket
Nemobius is a genus of small crickets in the family Trigonidiidae, commonly called wood crickets or ground crickets. The genus serves as the type genus for the subfamily Nemobiinae. Nemobius species are notable hosts for horsehair worms (Paragordius), which manipulate cricket behavior to facilitate their own reproduction. The genus contains approximately eight described species distributed across Europe and other regions.
Zatypota
Zatypota is a genus of ichneumonid wasps comprising at least 40 described species, distributed across Europe, Asia, and the Americas. All species are koinobiont ectoparasitoids of spiders, primarily targeting theridiid spiders though some species parasitize linyphiids and araneids. The genus is notable for inducing behavioral manipulation in host spiders, causing them to construct specialized "cocoon webs" that protect the developing wasp larva. Several species have been documented as hosts for hyperparasitoid chalcidid wasps, forming complex three-trophic-level interactions.
Zatypota alborhombarta
Zatypota alborhombarta is an ichneumonid parasitoid wasp in the subfamily Pimplinae and clade Polysphincta. It is a koinobiont ectoparasite of adult theridiid spiders, including Cryptachaea jequirituba and Achaearanea tingo. The wasp induces host behavioral modification to construct a protective 'cocoon web'—a simplified, reinforced web structure that shelters the developing parasitoid larva. This manipulation represents a sophisticated host-parasitoid interaction involving the repetition of specific web-building behavioral subroutines.