Synoeca

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Synoeca
Social Wasps (Synoeca cyanea) on their nest ... (28918674181).jpg
Synoeca cyanea on their nest
Synoeca septentrionalis.jpg
S. septentrionalis nest
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Vespidae
Subfamily: Polistinae
Tribe: Epiponini
Genus: Synoeca
de Saussure, 1852
Type species
Vespa surinama
Linnaeus 1767 [1]
Species

6 described species

Synoeca is a genus of eusocial paper wasps found in the tropical forests of the Americas. Commonly known as warrior wasps or drumming wasps, they are known for their aggressive behavior, a threat display consisting of multiple insects guarding a nest beating their wings [2] in a synchronized fashion, and an extremely painful sting (rating at the highest level of 4 in the Schmidt sting pain index). The sting is barbed and if used often kills the wasp, [3] which may be the reason why such a striking defensive display is used. This display escalates from drumming inside the nest to hundreds of wasps moving on to the envelope of the nest and continuing to drum. If this does not deter the threat only then do the wasps begin to sting. [2]

Contents

Distribution and habitat

The genus has a wide range within the Americas, with specimens being found in the tropical and subtropical portions thereof. S. septentrionalis is generally found in the northern part of the range, having been observed as far north as Mexico, throughout Central America and northern South America. [4] A very similar species, S. ilheensis, extends into Brazil and, until 2017, was reported as a southern population of S. septentrionalis. [5] [6] The other species in the genus are predominantly found in South America, as far south as Argentina. [4]

Synoeca thrives in tropical rainforests, building arboreal nests in trees, typically on the underside of major branches. A single comb is built directly on the tree trunk; and the nests have a characteristic shape which resembles an armadillo, leading to common vernacular names such as marimbondo-tatu or armadillo wasp. [5] These wasps swarm to form new colonies, a single queen leaves the nest accompanied by some workers to a new nest site. The queen uses pheromones to suppress the reproductive behaviour of the workers. When one queen dies she is replaced by another; colonies may last up to 16 years. [2]

Species

Venom and potential utilisation

Entomologist Justin Schmidt has ranked the sting of the species S. septentrionalis as a 4 on his Schmidt sting pain index and has described it as "torture. You are chained in the flow of an active volcano." This is the highest ranking in his index and also includes the bullet ant and a species of tarantula hawk in the genus Pepsis . [7] [8]

A research team in Brazil has discovered that Synoeca stings contain a newly discovered compound that could be used to treat anxiety, apparently working as effectively as diazepam when tested on rats. [9]

Related Research Articles

<span class="mw-page-title-main">Paper wasp</span> Vespid wasps that gather fibers from dead wood and plant stems

Paper wasps are vespid wasps that gather fibers from dead wood and plant stems, which they mix with saliva, and use to construct nests made of gray or brown papery material. Some types of paper wasps are also sometimes called umbrella wasps, due to the distinctive design of their nests.

<span class="mw-page-title-main">Schmidt sting pain index</span> Pain scale for insect stings

The Schmidt sting pain index is a pain scale rating the relative pain caused by different hymenopteran stings. It is mainly the work of Justin O. Schmidt, a former entomologist at the Carl Hayden Bee Research Center in Arizona. Schmidt published a number of works on the subject, and claimed to have been stung by the majority of stinging Hymenoptera.

<span class="mw-page-title-main">Polistinae</span> Subfamily of insects

The Polistinae is a subfamily of eusocial wasps belonging to the family Vespidae. They are closely related to the more familiar wasps and true hornets of the subfamily Vespinae, containing four tribes. With about 1,100 species total, it is the second-most diverse subfamily within the Vespidae, and while most species are tropical or subtropical, they include some of the most frequently encountered large wasps in temperate regions.

<i>Apoica</i> Genus of wasps

Apoica is a genus of eusocial paper wasp found throughout the Central and South American tropics. These wasps are truly nocturnal, carrying out their foraging activities after the setting of the sun. They prefer to construct their nests, which have an open comb like many paper wasps, under large leaves, or in shrubs. During the day, wasps covering the comb fan their wings to cool the nest, keeping it at a suitable temperature for larval development.

<i>Brachygastra</i> Genus of wasps

Honey wasps are species in the genus Brachygastra of the family Vespidae. Brachygastra comprises 17 species of social paper wasps. The ancestral species are thought to have diverged about 32 million years ago within diverse Amazonian rainforest. Subsequent speciation within the genus is thought to have mostly occurred between 23 Ma and 10 Ma, during the time of the Andean uplift when the landscape was significantly altered due to tectonic activity. The current cladistic organisation of the genus has been heavily reliant on morphological characteristics.

<span class="mw-page-title-main">Wasp</span> Clade of insects

A wasp is any insect of the narrow-waisted suborder Apocrita of the order Hymenoptera which is neither a bee nor an ant; this excludes the broad-waisted sawflies (Symphyta), which look somewhat like wasps, but are in a separate suborder. The wasps do not constitute a clade, a complete natural group with a single ancestor, as bees and ants are deeply nested within the wasps, having evolved from wasp ancestors. Wasps that are members of the clade Aculeata can sting their prey.

<i>Polistes carnifex</i> Species of wasp

Polistes carnifex, commonly known as the executioner wasp, is a neotropical vespid wasp in the cosmopolitan genus Polistes.

<i>Apoica pallens</i> Species of wasp

The Central American paper wasp is a nocturnal eusocial wasp. It is famous for its swarm based emigration behavior, and is native to the lowlands of Central and northern South America. This species has developed special night vision adaptations to facilitate their night-time swarming and foraging behavior and has important medicinal properties for the Pankararú people of Brazil.

Brachygastra lecheguana, formerly known as Nectarina lecheguana, is a species of dark paper wasp found across North and South America. It nests in underbrush in grassland-type environments, and produces honey, characteristic of the genus Brachygastra.

<i>Synoeca cyanea</i> Species of wasp

Synoeca cyanea, commonly known as the marimbondo-tatu in Brazil, is a swarm-founding eusocial wasp. Native to Brazil and Argentina, S. cyanea is one of the largest and most aggressive species of social wasps and is feared in many rural areas. It begins its colony cycle in the early spring and continues until nest abandonment. Throughout its life, S. cyanea forage sugary substances and animal carcasses for food and wood pulp for its nest. S. cyanea is also known for its strong venom, which is enough to cause haemolytic activity.

<i>Agelaia pallipes</i> Species of wasp

Agelaia pallipes is a species of social paper wasp found from Costa Rica to Brazil, Argentina and Paraguay. A. pallipes is ground-nesting and is one of the most aggressive wasps in South America. This species is a predator of other insects, including flies, moths, and ground crickets, as well as baby birds.

<i>Polybia sericea</i> Species of wasp

Polybia sericea is a social, tropical wasp of the family Vespidae that can be found in South America. It founds its colonies by swarming migrations, and feeds on nectar and arthropods.

Polybioides raphigastra is a species of social wasp found in the forests of South East Asia and Indonesia. It has recently been placed in the tribe Ropalidiini. This species is known for the downward-spiraling shape of their nests, and for having colony sizes exceeding ten thousand members.

<i>Synoeca surinama</i> Species of wasp

Synoeca surinama is a Neotropical swarm-founding wasp of the tribe Epiponini. It is known for its metallic blue and black appearance and painful sting. S. surinama builds nests on tree trunks and can be found in tropical climates of South America. When preparing to swarm, there are a number of pre-swarming behaviors that members of S. surinama colonies partake in, such as buzzing runs and occasional brood cannibalism. In S. surinama, social environmental conditions determine the caste ranks of individuals in the developing brood. Unlike less primitive Hymenoptera species, S. surinama display little morphological variation between egg laying queens and workers. S. surinama wasps visit flowering plants and are considered pollinators. When these wasps sting, the stinger is left in the victim and the wasp ultimately dies.

<i>Synoeca septentrionalis</i> Species of stinging wasp

Synoeca septentrionalis is one of five species of wasps in the genus Synoeca. It is a swarm-founding wasp that is also eusocial, exhibiting complicated nest structure and defense mechanisms and a colony cycle including a pre-emergence phase and a post-emergence phase. It is typically found in areas from Central to South America. This wasp is one of the larger species of paper wasps and exhibits multiple morphological adaptations as a result of this. Synoeca septentrionalis is known for possessing a very painful sting.

Brachygastra scutellaris, a honey wasp, is a Neotropical, swarm-founding species that is found in South America and has a medium-sized population of 100-1000 individuals per colony. It stores large amounts of nectar in its nest for the production of honey, and it was even found that at certain times of the year, the nectar is toxic to humans, as they will extract nectar from hallucinogenic plants, depending on the season.

Protopolybia chartergoides, also known as Pseudochartergus chartergoides, is a species of wasp within the genus Protopolybia. It is a social wasp found in southern Central America and northern South America.

Chartergellus is a genus of eusocial wasps of Epiponini with ten described species. The range of the species within this genus extends from Costa Rica to southeastern Brazil. The genus was described by J. Becquaert in 1938.

Synoeca ilheensis is a species of wasp in the genus Synoeca. It is found within the Atlantic Forest lowlands in South America. Members of this species are more aggressive and will warn invaders by producing a rhythm with their wings that resembles soldiers marching. Synoeca ilheensis was publicly announced on August 3, 2017.

<i>Angiopolybia</i>

Angiopolybia is a genus from the tribe Epiponini. The species was originally described by R L Araujo in 1946.

References

  1. O.W. Richards (1978). The social wasps of the Americas excluding the Vespinae. The British Museum Natural History. p. 178. ISBN   0565007858.
  2. 1 2 3 Hogue, Charles Leonard (1993). Latin American Insects and Entomology. University of California Press. ISBN   0-520-07849-7.
  3. Hermann, Henry (1971). "Sting Autotomy, a defensive mechanism in certain social Hymenoptera". Insectes Sociaux. 18 (2): 111–120. doi:10.1007/bf02223116. S2CID   42293043.
  4. 1 2 Andena, Sergio R.; Carpenter, James M.; Noll, Fernando B. (2009). "A phylogenetic analysis of Synoeca De Saussure, 1852, a neotropical genus of social wasps (hymenoptera: vespidae: epiponini)". Entomologica Americana. 115 (1): 81–89. doi:10.1664/07-ra-002r.1. S2CID   85860442.
  5. 1 2 Rodolpho S. T. Menezes; Sergio R. Andena; Antonio F. Carvalho; Marco A. Costa (2011). "First records of Synoeca septentrionalis Richards, 1978 (Hymenoptera, Vespidae, Epiponini) in the Brazilian Atlantic Rain Forest". ZooKeys (151): 75–78. doi: 10.3897/zookeys.151.1882 . PMC   3286226 . PMID   22368453.
  6. 1 2 Rogério B.Lopes; Rodolpho S.T. Menezes (2017). "Synoeca ilheensis sp. nov., a new social wasp (Hymenoptera, Vespidae, Polistinae) from Brazilian lowland Atlantic Forest (abstract)". Zootaxa. 4300 (3): 445. doi: 10.11646/zootaxa.4300.3.8 .
  7. "5 Most Painful Wasp Stings". Insect Realm. Retrieved 7 March 2022.
  8. Justin O. Schmidt (2019). "Pain and Lethality Induced by Insect Stings: An Exploratory and Correlational Study". Toxins. 11 (7): 427. doi: 10.3390/toxins11070427 . PMC   6669698 .
  9. Greta Friar (4 November 2016). "The Venom of This Dangerous Wasp Could Someday Help Treat Anxiety". Nova Next. WGBH Educational Foundation. Retrieved 25 November 2016.