Asexual-reproduction
Guides
Atrusca
Atrusca is a genus of gall wasps in the family Cynipidae, tribe Cynipini, comprising approximately 42 species distributed across North and Central America. These tiny wasps are specialized herbivores that induce characteristic galls on oak (Quercus) host plants. The genus forms a phylogenetically distinct clade most closely related to Cynips, Philonix, and Xanthoteras, and morphologically resembles Cynips and Antron. Species exhibit high host specificity, with each typically restricted to one or a few closely related oak species.
gall-waspCynipidaeoak-gallQuercusherbivoreparasitoidNorth-AmericaMexicoCentral-AmericaCynipiniinduced-gallplant-insect-interactionhost-specificityalternation-of-generationsasexual-reproductionsexual-reproductionecosystem-engineerinquilinehyperparasitoidbella-species-complexphylogeneticstaxonomyKinsey-1930Brunneria
stick mantis, Brunner's stick mantis
Brunneria is a genus of slender, stick-like praying mantises native to the Americas. The genus contains six recognized species, with B. borealis being particularly notable as the only known obligate parthenogenetic praying mantis—reproducing exclusively asexually with no males ever observed. This species has spread across more than 2,400 km of coastal North America from a hypothesized single female introduction. Other species in the genus, all South American, reproduce facultatively with both sexes present.
Disholcaspis prehensa
clasping twig gall wasp
Disholcaspis prehensa is a gall-inducing cynipid wasp native to California that induces distinctive galls on scrub oak and leather oak. The species exhibits heterogony, alternating between sexual and asexual generations that produce two morphologically different gall types. The asexual generation forms conspicuous mushroom-shaped twig galls with clasping bases, while the sexual generation produces small, hidden bud galls.
gall-waspcynipidheterogonyparthenogenesisoak-gallCalifornia-endemicant-mutualismDisholcaspisCynipidaeHymenopteraQuercusinduced-plant-structurephloem-sap-exudationbiological-mutualismseasonal-dimorphismsexual-dimorphismgall-dimorphismagamic-generationsexual-generationclasping-twig-gallbud-galltwig-gallnative-California-speciesscrub-oakleather-oakparasitoid-defenseant-plant-interactioninsect-plant-interactionplant-manipulationevolution-of-asexualityWeld-1957Zootaxa-4859molecular-systematicshost-plant-specificityCynipinioak-woodlandchaparralinsect-gallgall-morphologygall-colorationsun-exposure-effectslarval-chamberemergence-timingspring-emergencelate-winter-emergencegall-developmentoviposition-behavioregg-laying-in-budsegg-laying-in-twigsfemale-only-generationwingless-femalewinged-sexual-generationgall-size-dimorphismgall-shape-dimorphismhidden-gallexposed-gallgall-wasp-life-cyclecynipid-biologygall-wasp-taxonomygall-wasp-identificationgall-wasp-ecologyinsect-plant-coevolutionplant-growth-manipulationhormone-mediated-gall-inductionvenom-glandaccessory-glandsecretory-structuresgall-induction-mechanismgall-chemistryphloem-saphoneydewant-attractionant-protectionparasitoid-waspnatural-enemy-defenseindirect-defensemutualistic-interactiontrophic-cascadecommunity-ecologyspecies-interactionecosystem-engineerhabitat-modificationfood-webinsect-diversityCalifornia-biodiversityendemic-insectregional-endemismoak-specialistplant-specialistmonophagousoligophagoushost-rangehost-plant-evolutiongall-wasp-radiationadaptive-radiationevolutionary-innovationreproductive-strategyasexual-reproductionthelytokyarrhenotokysex-determinationdevelopmental-biologyinsect-morphologyinsect-anatomyfemale-morphologyovipositorstingeregg-injectionplant-tissue-manipulationcell-proliferationplant-hormoneauxincytokiningene-expressiontranscriptomicsproteomicsvenom-compositionbiochemistryphysiologyethologybehavioral-ecologypopulation-biologypopulation-dynamicsseasonalityphenologyclimate-effectsmicrohabitatniche-specializationconservation-biologyimperiled-habitatoak-woodland-conservationchaparral-conservationfire-ecologysuccessiondisturbancehabitat-fragmentationurbanizationagricultural-conversioninvasive-speciesclimate-changerange-shiftphenological-shiftcitizen-scienceiNaturalistobservation-dataspecies-distributionoccurrence-recordsbiodiversity-informaticstaxonomic-revisionspecies-descriptiontype-specimenmolecular-dataDNA-barcodingphylogeneticssystematicsevolutionary-historybiogeographydispersalvicariancespeciationspecies-conceptscryptic-speciesspecies-complexmorphological-variationgeographic-variationphenotypic-plasticitygenetic-variationpopulation-geneticsconservation-geneticsrestoration-ecologyhabitat-restorationmanaged-relocationassisted-migrationex-situ-conservationin-situ-conservationprotected-areanatural-reservestate-parknational-parkwilderness-areabiosphere-reserveUNESCOIUCNred-listspecies-assessmentconservation-statusdata-deficientresearch-priorityknowledge-gapfuture-researchgall-wasp-venomgall-wasp-glandsecretory-evolutiongall-wasp-phylogenyCynipidae-evolutionHymenoptera-phylogenyinsect-evolutiongall-evolutionplant-insect-interaction-evolutioncoevolutionary-arms-racemutualism-evolutiondefense-evolutioncounter-defenseenemy-free-spaceenemy-escapeecological-releaseadaptive-peakfitness-landscapeevolutionary-constraintevolutionary-trade-offlife-history-evolutionreproductive-allocationfecunditysurvivaldevelopment-timegeneration-timevoltinismunivoltinebivoltinemultivoltinediapauseoverwinteringcold-hardinessstress-tolerancedesiccation-resistancestarvation-resistanceimmune-responseparasitoid-resistancepathogen-resistancesymbiontmicrobiomegut-microbiotaendosymbiontWolbachiaRickettsiaCardiniumSpiroplasmabacterial-symbiontfungal-symbiontviral-symbiontmutualistic-microbeparasitic-microbecommensal-microbemicrobial-communitymetagenomicsmicrobial-ecologyhost-microbe-interactionimmune-systeminnate-immunityacquired-immunityhumoral-immunitycellular-immunityantimicrobial-peptidereactive-oxygen-speciesnitric-oxidemelanizationencapsulationnodulationphagocytosisautophagyapoptosisprogrammed-cell-deathstress-responseheat-shock-proteinoxidative-stresshypoxiaanoxiametabolic-raterespirationenergy-budgetnutrient-allocationlipid-storageglycogen-storageprotein-storageamino-acid-metabolismcarbohydrate-metabolismlipid-metabolismnitrogen-metabolismexcretionosmoregulationion-transportwater-balancecuticleintegumentsclerotizationpigmentationcolor-patternstructural-coloriridescencebioluminescencephotoreceptorvisioncompound-eyeocellusantennaolfactiongustationchemoreceptionmechanoreceptionthermoreceptionhygroreceptionproprioceptionneurobiologybrainganglionnerveneuronsynapseneurotransmitterhormonepheromoneallomonekairomonesemiochemicalchemical-ecologycommunicationsignalingmate-choicesexual-selectionsperm-competitioncryptic-female-choicemating-systemmating-behaviorcourtshipcopulationinseminationfertilizationovipositionegg-layingparental-carematernal-effectpaternal-effectepigeneticsgen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pattoni
Druon pattoni is a species of cynipid gall wasp in the family Cynipidae, found in the United States. It forms leaf galls on several oak species (Quercus chapmanii and Quercus stellata, with tentative records from Quercus margarettae and Quercus sinuata var. breviloba). Only the asexual generation is known; adults emerge from mature galls in October to November.
Mycophila speyeri
Mycophila speyeri is a mushroom-infesting cecid fly in the family Cecidomyiidae, first described by Barnes in 1926. It reproduces primarily through larval paedogenesis, a form of asexual reproduction in which larvae produce daughter larvae directly. Sexual reproduction and adult flies are rarely observed in commercial mushroom growing operations. The species has been documented as a significant pest of cultivated mushrooms in Pennsylvania and has been reported from China and several European countries including Denmark, Norway, Sweden, and Japan.
Phylloxerina nyssae
Phylloxerina nyssae is a minute gall-forming phylloxerid that induces distinctive yellowish-white crescent-shaped galls along the leaf margins of Nyssa sylvatica (black tupelo or sour gum). Adults are approximately 1 mm in length with sucking mouthparts positioned between the first pair of legs. The species reproduces asexually within galls, with females producing dozens of pill-shaped translucent eggs. Overwintering occurs as wax-covered individuals concealed in bark crevices and craggy trunk folds. While the gall formation causes cosmetic damage to foliage, the tree remains otherwise healthy.
Procambarus fallax
Slough Crayfish, Deceitful Crayfish
Procambarus fallax is a freshwater crayfish native to peninsular Florida and southern Georgia, USA, where it inhabits tributaries of the Satilla River. The species is notable as the sexual parental species of the parthenogenetic Marmorkrebs (marbled crayfish), which originated as a single lineage from P. fallax through apomictic parthenogenesis. While P. fallax reproduces sexually with separate males and females, its parthenogenetic derivative has achieved global distribution through the aquarium trade and exhibits high invasive potential due to single-female founding capability.
Timema genevievae
Genevieve's Timema
Timema genevievae is a species of walkingstick insect in the family Timematidae. It is one of several Timema species known for reproducing asexually via parthenogenesis. The species is endemic to California. Like other members of its genus, it exhibits cryptic coloration that provides camouflage against host plants.