Ant-parasitoid

Guides

Hybrizon
Hybrizon is a genus of small parasitoid wasps in the family Ichneumonidae, subfamily Hybrizontinae. Members are specialized ant parasitoids that attack ant larvae transported by worker ants. The genus was historically classified variably, previously placed in Braconidae or treated as a separate family, and the subfamily was formerly known as Paxylommatinae. Oviposition behavior involves females grasping ant larvae with their fore legs while exserting the ovipositor.
parasitoid ant-parasitoid Ichneumonidae Hybrizontinae oviposition-behavior Formicidae Lasius
Hybrizon flavocinctus
Hybrizon flavocinctus is a species of parasitoid wasp in the family Ichneumonidae, subfamily Hybrizontinae. Members of this subfamily are specialized ant parasitoids, representing the third most diverse group of ant parasitoid wasps after Eucharitidae and Neoneurini. The species was described by Ashmead in 1894. As with other Hybrizontinae, it is presumed to parasitize ants, though specific host records and behavioral observations for H. flavocinctus remain undocumented in the available literature.
parasitoid wasps ants Ichneumonidae Hybrizontinae ant-parasitoid Hymenoptera
Metopininae
Metopininae is the largest subfamily of scuttle flies (Phoridae), primarily due to the hyperdiverse genus Megaselia. Members exhibit broad ecological diversity, with larvae ranging from saprophagous decomposers to parasitoids of insects and other arthropods. The subfamily includes economically significant pests and is among the most frequently encountered phorid groups worldwide.
Diptera Phoridae scuttle-flies Megaselia saprophagous parasitoid agricultural-pest ant-parasitoid
Microdontinae
Ant Flies and Allies
A subfamily of hoverflies (Syrphidae) comprising approximately 400 species, distinguished by their obligate myrmecophilous lifestyle. Larvae develop within ant nests as predators or scavengers of ant brood, exhibiting reduced body segmentation compared to other syrphid larvae. Adults of many species remain near host ant colonies rather than visiting flowers; some species lack functional mouthparts entirely. Several genera lack the spurious vein characteristic of other Syrphidae.
myrmecophily mimicry Hymenoptera-mimicry ant-parasitoid larval-predator reduced-morphology spurious-vein-absence obligate-symbiosis
Neoneurini
Neoneurini is a tribe of braconid wasps in the subfamily Euphorinae, historically treated as a separate subfamily but now placed within Euphorinae based on molecular data. The tribe contains three European genera—Elasmosoma, Kollasmosoma, and Neoneurus—comprising koinobiont endoparasitoids of adult ants. These wasps possess highly specialized morphological adaptations for attacking ants, including a strongly curved, hook-shaped ovipositor directed forward, and modified legs with vestigial tarsal claws and enlarged pulvilli for grasping ant metasomas. The tribe has a fossil record extending to Baltic amber.
parasitoid ant-parasitoid Braconidae Euphorinae koinobiont formic-acid-attraction rapid-oviposition social-insect-parasite
Neoneurus
Neoneurus is a genus of minute parasitoid wasps in the family Braconidae, tribe Neoneurini. These wasps are specialized ant parasitoids, with females attacking adult ant workers in flight to deposit their eggs. The genus includes species such as Neoneurus vesculus, which has been filmed ovipositing into Formica cunicularia workers. Neoneurus species are among the few parasitoids capable of overcoming ant defenses, representing a highly specialized ecological adaptation.
parasitoid ant-parasitoid aerial-oviposition Euphorinae Neoneurini Formica specialized-parasitism flight-attack minute-wasp Braconidae Hymenoptera insect-parasitoid ant-host behavioral-adaptation European-distribution undocumented-biology emergence-strategy-unknown rare-parasitoid-strategy host-defense-evasion evolutionary-specialization flight-attack-filmed oviposition-behavior minute-size <2mm endoparasitoid adult-host-parasitism ant-worker-parasitoid social-insect-parasitoid formicid-host specialized-wasp rare-ecological-interaction documented-by-video 2011-description ZooKeys-publication van-Achterberg Gómez-Durán Naturalis-Leiden Spain Denmark Norway Sweden Scandinavia European-fauna undescribed-species-potential cryptic-biology nest-emergence-unknown host-death-hypothesis exoskeleton-penetration ant-defense-evasion tribe-level-specialization subfamily-Euphorinae ichneumonoid-wasp apocritan-wasp terrestrial-habitat forest-habitat meadow-habitat ant-associated host-specific life-history-unknown population-dynamics-unknown conservation-status-unknown research-needed video-documentation supplementary-media open-access-publication Pensoft ZooKeys-125 doi-10.3897/zookeys.125.1754 three-new-species-described-2011 European-species new-to-science-2011 ant-parasitoid-guild divergent-tactics amazing-adaptations enormous-tactical-differences dominant-group-exploitation defense-breakthrough rare-successful-parasitoid social-insect-exploitation host-colony-integration-unknown emergence-mortality-risk lethal-attack-avoidance dead-ant-deposition-hypothesis nest-entrance-emergence internal-development endoparasitic-development koinobiont-or-idiobiont-unknown development-time-unknown host-manipulation-unknown host-castration-unknown host-behavior-modification-unknown fecundity-unknown sex-ratio-unknown mating-system-unknown male-behavior-unknown searching-behavior-unknown host-location-cues-unknown volatile-detection-unknown trail-following-unknown antennal-detection-unknown visual-detection-unknown size-limitation-adaptation miniaturization 2mm-size-limit flight-maneuverability ant-worker-targeting caste-selection-unknown host-size-matching ovipositor-structure-unknown egg-structure-unknown larval-morphology-unknown pupal-development-unknown cocoon-formation-unknown adult-longevity-unknown feeding-adult-unknown sugar-feeding-unknown honeydew-feeding-unknown nectar-feeding-unknown overwintering-stage-unknown voltinism-unknown generation-time-unknown seasonal-phenology-unknown habitat-specificity-unknown altitudinal-range-unknown latitudinal-range-unknown biogeographic-pattern-unknown phylogenetic-relationships-unresolved sister-genus-unknown tribe-diversity Neoneurini-diversity Euphorinae-diversity Braconidae-diversity Ichneumonoidea-diversity Hymenoptera-diversity parasitoid-diversity ant-diversity Formica-diversity host-parasitoid-coevolution evolutionary-arms-race defense-counter-adaptation offense-adaptation rare-life-history-strategy scientific-discovery taxonomic-revision-needed species-diversity-underestimated cryptic-species-possible morphological-uniformity molecular-systematics-needed DNA-barcoding-potential collection-difficulty rarity-in-collections field-observation-difficulty behavioral-observation-difficulty video-documentation-value citizen-science-potential natural-history-gap biological-control-potential ant-pest-control invasive-ant-management ecosystem-service-potential economic-importance-unknown agricultural-relevance-unknown forestry-relevance-unknown urban-ecology-relevance-unknown conservation-biology-relevance indicator-species-potential environmental-monitoring-potential climate-change-response-unknown habitat-fragmentation-sensitivity-unknown pollution-sensitivity-unknown pesticide-sensitivity-unknown invasive-species-interaction-unknown competition-with-other-parasitoids-unknown hyperparasitism-unknown multiparasitism-unknown facultative-or-obligate-parasitoid-unknown host-range-breadth-unknown host-switching-potential-unknown host-race-formation-unknown reproductive-isolation-mechanisms-unknown speciation-mode-unknown diversification-rate-unknown extinction-risk-unknown IUCN-status-not-evaluated red-list-status-not-evaluated national-protection-status-unknown habitat-protection-needs-unknown research-priority funding-priority training-priority expertise-shortage taxonomic-expertise-needed ecological-expertise-needed behavioral-expertise-needed physiological-expertise-needed developmental-expertise-needed genetic-expertise-needed evolutionary-expertise-needed biogeographic-expertise-needed collection-expertise-needed rearing-expertise-needed observation-expertise-needed documentation-expertise-needed publication-priority data-sharing-priority specimen-deposition-priority museum-collection-priority live-collection-priority type-specimen-availability original-description-accessibility 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flood-response-unknown drought-response-unknown temperature-tolerance-unknown humidity-requirements-unknown microhabitat-specificity-unknown soil-association-unknown vegetation-association-unknown ant-nest-specificity-unknown ant-species-specificity-unknown ant-colony-size-preference-unknown ant-colony-stage-preference-unknown ant-worker-age-preference-unknown ant-worker-size-preference-unknown ant-worker-caste-preference-unknown seasonal-host-availability-tracking-unknown diurnal-activity-pattern-unknown nocturnal-activity-possible crepuscular-activity-possible weather-influence-on-activity-unknown temperature-threshold-for-activity-unknown wind-speed-tolerance-unknown precipitation-influence-unknown cloud-cover-influence-unknown moon-phase-influence-unknown competition-for-hosts-unknown intraspecific-competition-unknown interspecific-competition-unknown territorial-behavior-unknown sexual-selection-unknown mate-location-unknown mate-recognition-unknown courtship-behavior-unknown copulation-duration-unknown sperm-transfer-unknown sperm-storage-unknown female-remaining-unknown male-mating-success-determinants-unknown operational-sex-ratio-unknown effective-population-size-unknown inbreeding-depression-unknown outbreeding-depression-unknown genetic-load-unknown adaptation-potential-unknown evolvability-unknown plasticity-limits-unknown canalization-unknown genetic-assimilation-potential-unknown acclimation-ability-unknown stress-response-unknown immune-response-unknown symbiont-association-unknown microbiome-unknown pathogen-susceptibility-unknown parasite-susceptibility-unknown predation-risk-unknown antipredator-defense-unknown mimicry-unknown crypsis-unknown aposematism-unknown startle-response-unknown thanatosis-unknown autotomy-unknown chemical-defense-unknown mechanical-defense-unknown behavioral-defense-unknown social-defense-unknown aggregation-behavior-unknown solitary-behavior-unknown gregarious-behavior-unknown swarming-behavior-unknown 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exogenous-cue-dependence-unknown zeitgeber-unknown entrainment-unknown free-running-period-unknown phase-response-unknown masking-unknown splitting-unknown after-effects-unknown transients-unknown precision-unknown accuracy-unknown stability-unknown temperature-compensation-unknown latitude-compensation-unknown altitude-compensation-unknown seasonal-compensation-unknown age-related-change-unknown sex-difference-unknown individual-variation-unknown genetic-variation-unknown environmental-variation-unknown phenotypic-correlation-unknown genetic-correlation-unknown allometry-unknown ontogenetic-scaling-unknown static-scaling-unknown evolutionary-scaling-unknown heterochrony-unknown heterotopy-unknown paedomorphosis-unknown peramorphosis-unknown plasticity-unknown integration-unknown modularity-unknown robustness-unknown complexity-unknown optimization-unknown constraint-unknown trade-off-unknown correlation-unknown covariance-unknown variance-unknown heritability-unknown selection-differential-unknown response-to-selection-unknown evolutionary-rate-unknown phylogenetic-signal-unknown phylogenetic-niche-conservatism-unknown phylogenetic-community-ecology-unknown comparative-method-application-unknown ancestral-state-reconstruction-unknown divergence-time-estimation-unknown molecular-clock-calibration-unknown fossil-calibration-unknown biogeographic-model-unknown dispersal-vicariance-analysis-unknown DEC-model-unknown BAYAREALIKE-model-unknown DIVA-model-unknown parsimony-analysis-unknown event-based-model-unknown trait-dependent-diversification-unknown diversity-dependent-diversification-unknown key-innovation-unknown adaptive-radiation-unknown species-selection-unknown macroevolutionary-pattern-unknown microevolutionary-process-unknown evolutionary-dynamics-unknown community-assembly-unknown ecosystem-function-unknown trophic-interaction-unknown food-web-position-unknown energy-flow-unknown nutrient-cycling-unknown decomposition-contribution-unknown primary-production-influence-unknown secondary-production-contribution-unknown ecosystem-engineering-unknown keystone-species-status-unknown foundation-species-status-unknown dominant-species-status-unknown ecosystem-service-provision-unknown natural-capital-contribution-unknown human-well-being-influence-unknown sustainable-development-relevance-unknown policy-relevance-unknown management-relevance-unknown restoration-relevance-unknown conservation-planning-relevance-unknown systematic-conservation-planning-unknown priority-area-identification-unknown gap-analysis-unknown representation-target-unknown persistence-target-unknown viability-analysis-unknown population-viability-unknown minimum-viable-population-unknown minimum-dynamic-area-unknown habitat-suitability-unknown habitat-quality-unknown habitat-fragmentation-unknown habitat-connectivity-unknown habitat-amount-unknown habitat-configuration-unknown habitat-threshold-unknown habitat-loss-impact-unknown habitat-degradation-impact-unknown habitat-conversion-impact-unknown habitat-restoration-potential-unknown habitat-creation-potential-unknown corridor-effectiveness-unknown stepping-stone-effectiveness-unknown matrix-quality-influence-unknown edge-effect-sensitivity-unknown interior-habitat-requirement-unknown area-sensitivity-unknown isolation-sensitivity-unknown connectivity-requirement-unknown dispersal-limitation-unknown range-size-unknown range-filling-unknown range-shift-potential-unknown range-contraction-unknown range-expansion-unknown colonization-credit-unknown extinction-debt-unknown relaxation-time-unknown equilibrium-assumption-unknown non-equilibrium-dynamics-unknown source-sink-dynamics-unknown metapopulation-capacity-unknown rescue-effect-unknown,
Orasema
Orasema is a genus of chalcid wasps in the family Eucharitidae containing at least 50 described species. These wasps are specialized parasitoids of myrmicine ants (Formicidae: Myrmicinae), with documented hosts including Pheidole, Wasmannia, and Solenopsis. The genus is widespread in the New World, ranging from northern Argentina to southern Canada. Several species groups have been established based on morphology and molecular phylogeny, with the stramineipes group being the most diverse. Some species have been associated with minor agricultural damage when ovipositing into crop plant leaves.
parasitoid ant-parasitoid myrmicine Eucharitidae planidia extrafloral-nectary biological-control-potential agricultural-pest New-World Chalcidoidea
Orasema castilloae
Orasema castilloae is a species of chalcid wasp in the family Eucharitidae, described in 2020. It belongs to the Orasema tolteca species group, one of several species groups within the widespread New World genus Orasema. Members of this genus are specialized parasitoids of myrmicine ants (Formicidae: Myrmicinae). The species is known from the southwestern United States and northwestern Mexico.
Eucharitidae parasitoid ant-parasitoid myrmicine-ant New-World Chalcidoidea
Orasema costaricensis
Orasema costaricensis is a species of parasitic wasp in the family Eucharitidae, first described by Wheeler & Wheeler in 1937. Like other members of the genus Orasema, it is likely a parasitoid of ant larvae, though specific host associations for this species remain poorly documented. The species name indicates its Costa Rican origin. Records from the Galápagos Islands suggest some dispersal capacity or potential human-mediated introduction.
Eucharitidae parasitoid-wasp ant-parasitoid Neotropical Costa-Rica Galápagos Hymenoptera Chalcidoidea Orasema
Phyllobaenus obscurus
checkered beetle
Phyllobaenus obscurus is a checkered beetle (family Cleridae) notable as the first documented case of a beetle acting as a parasitoid of ants. Larvae develop inside intact cocoons of two species in the Ectatomma ruidum species complex, feeding on ant prepupae or pupae and eventually killing the host. This parasitoid lifestyle represents a significant departure from typical clerid ecology, which centers on predation of wood-boring beetles. The species has been documented in Pacific coastal plains of Oaxaca, Mexico, where prevalence of parasitism is extremely low (<0.6% of available cocoons).
parasitoid ant-parasitoid checkered-beetle novel-host-exploitation social-insect-parasitism Ectatomma Mexico Cleridae campodeiform-larvae low-prevalence-parasitism
Pseudochalcura
Pseudochalcura is a genus of chalcid wasps in the family Eucharitidae, containing approximately 14 described species. All species are specialized parasitoids of ants (Formicidae). The genus is widespread in the New World, ranging from the Yukon and Alaska to northern Chile and Argentina.
parasitoid ant-parasitoid Eucharitidae Chalcidoidea New-World Camponotus-rectangularis multiple-parasitism co-occurrence
Pseudogaurax
Pseudogaurax is a genus of small flies in the family Chloropidae (frit flies), established by Malloch in 1915. The genus contains approximately 70 described species distributed across all biogeographic regions, with particular diversity in the Neotropics. Larvae are specialized predators and parasitoids of arthropod eggs, with well-documented associations with spider egg sacs, dobsonfly egg masses, mantid oothecae, and—uniquely among Chloropidae—ants. The genus includes the first known ant-parasitizing species in its family, Pseudogaurax paratolmos, discovered in Panama in 2016.
Chloropidae parasitoid egg-predator spider-egg-sac ant-parasitoid ectoparasitoid biocontrol Neotropical Brazil Panama
Pseudometagea
Pseudometagea is a genus of parasitic wasps in the family Eucharitidae, characterized by endoparasitic first-instar larvae (planidia) that develop internally within host ant larvae. The genus is notable for having evolved endoparasitism independently within Eucharitidae, exhibiting koinobiosis where the parasitoid allows the host to continue development. The life history has been documented primarily for P. schwarzii, which parasitizes Lasius neoniger. Adults are short-lived and typically remain near host nests.
endoparasitism koinobiosis planidium ant-parasitoid hypermetamorphosis