Painful-sting

Guides

Dasymutilla
velvet ants, cow killers
Dasymutilla is a genus of solitary wasps in the family Mutillidae, commonly known as velvet ants. The genus contains the majority of North American velvet ant species. Females are wingless, densely hairy, and often brightly colored in aposematic patterns of red, orange, or white against black. Males possess wings and may differ substantially in coloration from females, leading to historical taxonomic confusion. The genus is notable for females' potent stings, among the most painful of any insect, and for forming one of the world's largest known Müllerian mimicry complexes.
Mutillidae velvet-ant parasitoid sexual-dimorphism Müllerian-mimicry aposematic-coloration painful-sting wingless-female external-parasite ground-nesting-host
Dasymutilla gloriosa
Thistledown Velvet Ant
Dasymutilla gloriosa, commonly known as the thistledown velvet ant, is a species of wasp in the family Mutillidae. It exhibits extreme sexual dimorphism and dichromatism: females are wingless, densely covered with long white hairs that provide camouflage resembling creosote bush seeds, while males have wings and more typical coloration. The species inhabits arid regions of the southwestern United States and Mexico, where its unique appearance has been interpreted as both crypsis and thermal adaptation.
parasitoid sexual-dimorphism crypsis desert-adapted painful-sting
Dasymutilla leda
Dasymutilla leda is a species of velvet ant in the family Mutillidae, native to the central United States. Only females have been collected by scientists, making this a species known exclusively from wingless, solitary individuals. The male remains undescribed, though D. myrice has been proposed as a possible match based on distribution and coloration patterns. Like other velvet ants, females are capable of delivering a painful sting and are parasitoids of ground-nesting bees and wasps.
velvet-ant parasitoid sexually-dimorphic wingless-female painful-sting
Dasymutilla magnifica
Magnificent Velvet Ant
Dasymutilla magnifica, commonly called the magnificent velvet ant, is a wingless female wasp in the family Mutillidae found in arid regions of western North America. Like other velvet ants, females possess a potent sting used in defense and for subduing hosts. The species is notoriously difficult to distinguish from the sympatric Dasymutilla klugii based on external appearance alone. Males are winged and likely differ in coloration from females, though specific details for this species are not well documented.
velvet-ant Mutillidae Hymenoptera desert southwestern-North-America wingless-female painful-sting
Dasymutilla occidentalis
Common Eastern Velvet Ant, Red Velvet Ant, Cow Killer, Cow Ant, Eastern Velvet Ant
Dasymutilla occidentalis is a large, solitary parasitoid wasp in the family Mutillidae, commonly known as the eastern velvet ant or cow killer. Females are wingless, densely covered in velvety red and black hairs, and possess an extremely painful sting. Males are winged and less conspicuously colored. The species is an external parasitoid of ground-nesting bees and wasps, with females actively searching for host nests to lay eggs on or near developing larvae. Despite its common name, it is not an ant but a true wasp, and its sting, while intensely painful, cannot actually kill a cow.
velvet-ant parasitoid aposematic Müllerian-mimicry painful-sting wingless-female ground-nesting-host solitary-wasp
Dasymutilla satanas
Satan's velvet ant
Dasymutilla satanas, commonly called Satan's velvet ant, is a species of wingless female wasp in the family Mutillidae found in the arid deserts of the Great Basin region of North America. The species name references the harsh desert environment it inhabits. Females are notably large for the genus, comparable in size to Dasymutilla magna and Dasymutilla sackenii. Like other velvet ants, females possess a powerful sting and are solitary parasitoids of ground-nesting insects.
Mutillidae velvet-ant parasitoid desert Great-Basin wingless-female painful-sting
Dasymutillini
velvet ants
Dasymutillini is a tribe of velvet ants (Mutillidae) characterized by dense, velvety pubescence and aposematic coloration. Members are solitary wasps with wingless females and winged males. The tribe includes the genus Dasymutilla, which contains numerous species across the Americas. Females are known for their extremely painful stings, among the most intense of any insect.
velvet-ant mutillid solitary-wasp parasitoid aposematic painful-sting wingless-female
Ephuta stenognatha
Ephuta stenognatha is a species of velvet ant (Mutillidae), a family of solitary wasps in which females are wingless and often brightly colored. The species is part of a genus distributed primarily in North America. Like other mutillids, females are known for their extremely painful sting, a defensive adaptation. The species is relatively poorly documented in published literature.
mutillidae velvet-ant solitary-wasp wingless-female aposematic-coloration painful-sting
Hemipepsis ustulata
Flamed Tarantula-hawk Wasp, tarantula hawk
Hemipepsis ustulata is a large spider wasp in the family Pompilidae, commonly known as a tarantula hawk. It is native to the Southwestern United States and is among the largest Hymenoptera, reaching up to 5 cm in length. Females hunt tarantulas, paralyzing them with a powerful sting to serve as living food for their larvae. Males exhibit complex lekking territorial behavior, defending prominent perches on hilltops to intercept receptive females. The species has matte black coloration with rust-orange wings, distinguishing it from the iridescent blue-black Pepsis species.
spider-wasp tarantula-hawk parasitoid lekking territorial aposematic painful-sting desert hilltopping sexual-dimorphism
Mutillidae
Velvet Ants, Hairy Ants, Panda Ants
Mutillidae, commonly known as velvet ants, are a family of solitary wasps comprising over 3,000 described species. Despite their common name, they are not ants but wingless female wasps that resemble large, hairy ants. The family exhibits striking sexual dimorphism: females are apterous (wingless), brightly colored, and possess a powerful sting, while males are winged and generally darker in coloration. Velvet ants are parasitoids of ground-nesting bees and wasps, with females actively searching for host nests to lay eggs on or near the host pupae or larvae. They form one of the world's largest known Müllerian mimicry complexes, with numerous species sharing aposematic red, orange, or yellow and black coloration to warn predators of their potent defensive capabilities.
aposematic-coloration Müllerian-mimicry sexual-dimorphism ectoparasitoid wingless-female stridulation phoretic-copulation painful-sting ground-nesting-host solitary-wasp
Norape sorpresa
Norape sorpresa is a recently described species of flannel moth in the family Megalopygidae, first characterized by Wagner and Matson in 2022. Like other members of its genus, the caterpillars possess urticating hairs that can deliver painful stings when touched. The species belongs to a group of moths known for their concealed defensive structures beneath soft, hair-like setae. As a newly described taxon, detailed information about its biology and distribution remains limited.
stinging-caterpillar urticating-hairs flannel-moth Megalopygidae defensive-structures painful-sting skin-irritation newly-described-species 2022 Zygaenoidea Trosiinae Norape Lepidoptera medical-entomology venomous-caterpillar
Pepsis chrysothemis
Pepsis chrysothemis is a large spider wasp in the family Pompilidae, commonly known as a tarantula hawk. It occurs in the southwestern United States and Mexico. Females hunt tarantulas, paralyzing them with a sting and laying a single egg on the immobilized spider. The species exhibits the classic tarantula hawk coloration of iridescent blue-black body with orange wings, though some individuals may show variation.
tarantula-hawk spider-wasp desert parasitoid aposematic-coloration Müllerian-mimicry painful-sting
Pepsis mexicana
Mexican tarantula-hawk wasp
Pepsis mexicana is a species of tarantula hawk wasp in the family Pompilidae. Females hunt and paralyze large theraphosid spiders to provision nests for their larvae. The species is notable for its relatively small size compared to other Pepsis species and its distinctive wing markings. Both sexes feed on nectar from flowering plants.
tarantula-hawk spider-wasp parasitoid desert-fauna painful-sting mimicry-model
Pepsis mildei
Milde's tarantula-hawk wasp, Milde's tarantula hawk
Pepsis mildei is a large spider wasp in the family Pompilidae, commonly known as Milde's tarantula-hawk wasp. It is native to the Western Hemisphere, with documented records across the southwestern and central United States, Mexico, and Central America. The species exhibits sexual dimorphism in antennae structure and lifespan, with females living longer than males. Adults feed on nectar from flowers, while larvae are obligate parasitoids of tarantulas. The wasp has been observed to learn from experience, avoiding chemically defended spiders after a single negative encounter.
tarantula-hawk spider-wasp parasitoid desert-insect aposematic painful-sting learning-behavior sexual-dimorphism antennae-dimorphism
Pepsis thisbe
Thisbe's tarantula-hawk wasp
Pepsis thisbe is a large spider wasp in the family Pompilidae, commonly known as Thisbe's tarantula-hawk wasp. Females are 32–44 mm in length with a dark blue body and orange wings. The species exhibits pronounced sexual dimorphism: females have curly antennae and a 7 mm stinger, while males have straight antennae and lack stingers entirely. Adults are nectarivorous, feeding primarily on flowers, but females hunt tarantulas as food for their larvae. The species is distributed throughout the American Southwest in desert areas.
spider-wasp tarantula-hawk parasitoid desert-insect painful-sting sexual-dimorphism Pompilidae theraphosid-host
Pogonomyrmex tenuispinus
Pogonomyrmex tenuispinus is a species of harvester ant in the genus Pogonomyrmex. Like other members of this genus, it is a seed-collecting ant native to arid regions. The species was described by Auguste Forel in 1914. As a harvester ant, it likely participates in seed dispersal and ecosystem engineering through nest construction, though specific ecological studies for this species are limited.
harvester-ant seed-collecting-ant arid-adapted-ant Pogonomyrmex Myrmicinae Formicidae Hymenoptera Insecta Arthropoda Animalia Forel-1914 species accepted Pogonomyrmex-tenuispinus Pogonomyrmecini Aculeata Apocrita Hexapoda Eukaryota Metazoa Vespoidea insect ant seed-harvester desert-ant native-species keystone-species-candidate ecosystem-engineer myrmecochory nest-disk island-of-fertility stinging-ant venomous-insect arthropod hymenopteran formicid myrmicine-ant pogonomyrmecine-ant harvester-ant-species Pogonomyrmex-species North-American-ant western-North-America-ant arid-region-ant xeric-habitat-ant granivorous-ant seed-predator seed-disperser soil-engineer vegetation-engineer nest-rim-vegetation biodiversity-hotspot-creator food-web-participant predator prey insectivore-food-source rodent-defense mammal-defense painful-sting Schmidt-sting-pain-index Justin-Schmidt Derek-Uhey Richard-Hofstetter keystone-species pest-perception range-management rangeland-ecology restoration-ecology 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Texas Mexico Chihuahuan-Desert Sonoran-Desert Mojave-Desert Great-Basin Colorado-Desert arid-grassland shrubland pinyon-juniper ponderosa-pine nest-rim nest-clearing nest-mound subterranean-granary trunk-trail foraging-patch patroller-ant forager-ant seed-transport seed-storage seed-consumption seed-germination seedling-establishment plant-recruitment plant-community-composition vegetation-pattern landscape-pattern polka-dot-landscape bare-soil vegetation-clearing vegetation-enhancement nutrient-deposition detritus-accumulation soil-biota-enhancement microhabitat-creation refugia stress-tolerance drought-tolerance grazing-tolerance fire-tolerance ecosystem-stability ecosystem-resilience ecosystem-services conservation-value management-consideration research-subject educational-subject ant-farm-subject children's-science outreach public-education entomology myrmecology ecology ethnobiology ethnoentomology venom-biochemistry peptide-venom sodium-ion-channel mammalian-nervous-system toxicology LD50 Maricopa-harvester-ant Pogonomyrmex-maricopa western-harvester-ant Pogonomyrmex-occidentalis Californian-harvester-ant Pogonomyrmex-californicus Pogonomyrmex-rugosus Pogonomyrmex-subdentatus red-harvester-ant black-harvester-ant Messor Veromessor seed-harvesting-ant-genera ant-genera ant-species ant-taxonomy ant-biodiversity ant-conservation ant-management ant-control ant-bait ant-sting-treatment ant-allergy ant-venom-evolution ant-plant-interaction ant-seed-interaction ant-rodent-interaction ant-vertebrate-interaction ant-arthropod-interaction ant-microbe-interaction ant-soil-interaction ant-vegetation-interaction ant-landscape-interaction mutualism commensalism predation scavenging granivory myrmecophily myrmecophagy formicivory ecological-engineering ecosystem-engineering keystone-engineering foundation-species dominant-species abundant-species conspicuous-species visible-species indicator-species umbrella-species flagship-species research-model ecological-model 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myrmecologist ecologist conservationist naturalist ethnobiologist toxicologist behavioral-ecologist 2021 2023 November-2021 December-2023 July-2015 July-17 July-18 Annals-of-the-Entomological-Society-of-America Environmental-Entomology Bug-of-the-Week Bug-Squad Entomology-Today National-Moth-Week photo photograph image visual-record documentation field-observation field-study field-experiment laboratory-study controlled-experiment observational-study comparative-study long-term-study short-term-study cross-sectional-study experimental-manipulation exclosure grazing-exclosure drought-event climate-event weather-event disturbance-event fire-event grazing-event seasonal-variation temporal-variation spatial-variation nest-pattern plant-composition plant-cover plant-biomass plant-growth plant-recovery seed-bank-dynamics soil-property soil-nutrient soil-moisture soil-temperature soil-biota microbial-community fungal-community bacterial-community detritus refuse-pile trash-dump nest-chamber 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existed-at-factor been-at-factor occurred-at-factor happened-at-factor taken-place-at-factor transpired-at-factor resulted-at-factor ensued-at-factor followed-at-factor succeeded-at-factor preceded-at-factor anteceded-at-factor led-to-at-factor caused-at-factor produced-at-factor effected-at-factor brought-about-at-factor given-rise-to-at-factor stemmed-at-factor arisen-at-factor derived-at-factor originated-at-factor emerged-at-factor sprung-at-factor flowed-at-factor accorded-at-factor depended-at-factor relied-at-factor rested-at-factor based-at-factor grounded-at-factor founded-at-factor built-at-factor constructed-at-factor erected-at-factor established-at-factor set-up-at-factor installed-at-factor placed-at-factor put-at-factor laid-at-factor settled-at-factor located-at-factor situated-at-factor positioned-at-factor stationed-at-factor posted-at-factor assigned-at-factor allotted-at-factor apportioned-at-factor distributed-at-factor given-at-factor granted-at-factor awarded-at-factor conferred-at-factor bestowed-at-factor presented-at-factor offered-at-factor proposed-at-factor suggested-at-factor recommended-at-factor advised-at-factor counseled-at-factor consulted-at-factor discussed-at-factor talked-at-factor spoken-at-factor said-at-factor told-at-factor informed-at-factor notified-at-factor reported-at-factor announced-at-factor proclaimed-at-factor published-at-factor issued-at-factor released-at-factor circulated-at-factor broadcast-at-factor transmitted-at-factor sent-at-factor dispatched-at-factor mailed-at-factor shipped-at-factor transported-at-factor conveyed-at-factor delivered-at-factor
Pseudomethoca athamas
Pseudomethoca athamas is a species of velvet ant in the family Mutillidae. The species is found in western North America, specifically in California, Oregon, and Baja California. Like other mutillids, females are wingless and males are winged. The genus Pseudomethoca includes species that have been proposed as models for mimicry by checkered beetles (family Cleridae), particularly the orange-banded checkered beetle Enoclerus ichneumoneus.
mutillidae velvet-ant parasitoid mimicry-model western-north-america wingless-female painful-sting cow-killer
Timulla hollensis
Timulla hollensis is a species of wingless wasp in the family Mutillidae, commonly known as velvet ants. The species is part of a genus noted for aposematic coloration and a potent sting. Males are winged while females are wingless and ant-like in appearance. The species has been documented in the eastern United States, with observations spanning multiple states.
Mutillidae velvet-ant wingless-wasp mimicry-model aposematic painful-sting eastern-United-States