Polybia sericea | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hymenoptera |
Family: | Vespidae |
Subfamily: | Polistinae |
Genus: | Polybia |
Species: | P. sericea |
Binomial name | |
Polybia sericea (Olivier, 1792) | |
Polybia sericea is a social, tropical wasp [1] of the family Vespidae that can be found in South America. [2] It founds its colonies by swarming migrations, and feeds on nectar [3] and arthropods. [1]
P. sericea is medium in size, and has a dark-colored body. [4] The wasps build multitiered nests, and colony size can vary greatly between a few to a few thousand workers. [2] Queens can be distinguished from workers by their greater body size and smaller head size. [2] They tend to be polygynous, meaning that several egg-laying queens are within a nest, with the result that workers are generally less related to each other than in other eusocial species. [5] Workers are responsible for hunting and foraging, while queens are responsible for laying eggs, and have the most developed ovaries. When hunting for prey, workers rely heavily on visual and olfactory cues. [1] Prey include arthropods such as green and brown caterpillars.
P. sericea is a species within the genus Polybia of the subfamily Polistinae. [6] Polybia is the most diversified genus within tribe Epiponini, [2] which is characterized by colony founding via swarming. Placement of Polybia among related genera has fluctuated, and the genus may be paraphyletic. [6]
P. sericea individuals are medium-sized wasps, [4] about 17 mm long. [1] They are dark in color, and tend to be slow-flying and docile, unless they are disturbed. [4] Queens typically have larger abdomens, and smaller heads and wings than workers. [2]
Workers build enclosed, multitiered, roughly spherical nests of carton paper maché-like pulp of plant fibres chewed with saliva. [1] Nests are reddish-brown in color, and are not very large. [2] They are typically built between 2 and 5 m off the ground, [7] in the branches of trees or shrubs. [1]
Individuals of P. sericea live in South America, and are commonly found throughout Brazil. A large population inhabits the lower tropical Amazon region of Brazil. They tend to live in semiarid climates, in open areas, around forest edges, and near rivers. [1] This species prefers to live in areas with grasses, trees, and shrubs, likely because these areas make good places to build nests and to forage. [1]
P. sericea colonies can range from a few to a few thousand individuals, [2] but are typically made up of several hundred workers. [4] The number of queens in a nest can range from one to several. [2] New colonies are founded by swarming emigration, where the entire colony travels to a new nest site. [4]
Swarm emigration may occur for several reasons. One is if the colony sends a reproductive swarm from the original nest. This may happen if the colony has grown too big, and must split into two new colonies. In this situation, part of the colony remains in the original nest, with a subgroup leaving to colonize a new nesting site. Other reasons it occurs is if an old nest becomes unsuitable, or if the nest is attacked by a predator. At first, when the colony is driven from the nest, individuals assemble in groups of 2 or 3 around the original nest. Wasps will exchange between groups until the entire colony is assembled in one cluster. The colony may remain in this cluster for up to 2 days before migrating to the new site. Once the colony begins to travel, leading individuals drag their gasters over prominent objects such as branches or tall grass. This releases a pheromone that other workers can follow to the new nesting site. [4]
Pheromone communication can be used to recruit workers to a food source, a new nesting site, or a place where work is required. [8] The pheromone is released from the abdomen of the wasp, at the base of the fifth sternite. It is excreted by Richard's glands. [4] The pheromone has a strong, leather-like odor, and looks like brownish wax. [8] Because of the strong odor, workers can easily follow a pheromone trail left by other colony members. [4] The pheromone is produced slowly and continuously throughout life, so it can be used up if used too often or too quickly. [2] Another species that exhibits this behavior is Synoeca surinama.
P. sericea individuals forage for flower nectar, nest-building materials, and for prey. Workers tend to search for building materials such as wood pulp in the mid-morning, and for food in the later morning and early afternoon. Workers generally forage close to the nest because they cannot fly long distances. These wasps can fly for about 75 m, which is low compared to other species in the genus Polybia. When searching over longer distances, return rate to the nest decreases. When availability of food resources is low, colony development becomes limited. P. sericea can store nectar as honey to use in times of scarcity. [3]
When workers hunt for arthropods, they fly from side to side about half a meter off of the ground. [9] Visual cues are used to determine where to search for prey, whereas olfactory cues are used to determine nearby prey, and elicit landing. [1] Green and brown caterpillars are the most common prey for P. sericea. Once a caterpillar or other insect has been found, workers bite the insect behind the head. They then drag the prey up onto a twig or a piece of grass, or sometimes fly the insect to a different location, to keep ants or other insects from stealing their prey. [1] Once the insect is in a safe location, the wasp malaxates (softens) it by mixing it with a thinner substance, presumably saliva. The worker then brings what it can back to the nest to feed others. [9] If prey is too large to bring back to the nest, foragers leave the prey, and fly in side-to-side arcs back to the nest to recruit other workers to help carry the load. [10]
Colonies of P. sericea are polygynous, and generally have more than one queen. Typically, the number of queens in a colony is three or four. This results in a lower degree of relatedness among workers, and why workers should care for offspring that are related to them by less than half is questioned. Although this is not fully understood, the advantages of group living may compensate for the low degree of relatedness among workers, so workers will still care for offspring. [5]
Some morphological differences are seen between queens and workers of P. sericea. Generally, queens are larger than workers in the abdominal region, but have smaller head width and wing length. Queens are the only ones with well-developed ovarioles, mature oocytes, and sperm-filled spermathecae. Workers' ovaries are either underdeveloped or not developed at all, so they are not reproductive. Queens perform the reproductive tasks of the colony, while workers forage for food and nest-building materials. Thus, workers likely have larger brains and wings because they must hunt and forage for food. [2] The morphological differences seen in this caste differentiation are also seen with the species Protopolybia chartergoides and Polybia rejecta. [11]
P. sericea wasps are generally docile, and do not attack other organisms unless they are stimulated. When they are attacked, however, they may chase predators up to 15 m away from the nest. In addition, they may sting and bite the predator. The magnitude of a defense response is proportional to the energetic investment by the colony in rearing individuals and to the size of the colony. More individuals are likely to attack a predator if more adults, eggs, larvae, and pupae are in the nest, since the colony has already made a large investment in developing itself. [7] P. sericea relies upon active defense to defend their nests from ants, whereas other species produce glandular secretions that act as ant repellant to deter their entering the nest. [12]
The diet of P. sericea consists of arthropods such as caterpillars and flies, [1] as well as energetic carbohydrates such as nectar and fruits. Larvae feed only on animal proteins that must be supplied by adult workers. The workers must hunt for insects and feed them to larvae by chewing up the prey and transferring it to the larvae. [3] The most common natural prey of this species is green or brown caterpillars. [9] They also may prey on cashew fruits in Brazil, as well as the white fly, which parasitizes the cashew fruit. [13]
P. sericea is historically and culturally significant to the Pankararé Indians, who live in northwest Brazil. They have developed a folk taxonomy of many social bees and wasps that inhabit the area. P. sericea is classified as a fierce wasp that is likely to bite more than once. This classification contrasts with other findings that describe this species as docile, and not aggressive unless provoked. The Pankararé often roast the combs of P. sericea larvae, and then extract them to be eaten alone or mixed with manioc flour. In addition, they use this species in their healing practices. A bath of smoke from burning the nests is used to treat evil eye and stroke. [14]
Polistes metricus is a wasp native to North America. In the United States, it ranges throughout the southern Midwest, the South, and as far northeast as New York, but has recently been spotted in southwest Ontario. A single female specimen has also been reported from Dryden, Maine. Polistes metricus is dark colored, with yellow tarsi and black tibia. Nests of Polistes metricus can be found attached to the sides of buildings, trees, and shrubbery.
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.
Polybia occidentalis, commonly known as camoati, is a swarm-founding advanced eusocial wasp. Swarm-founding means that a swarm of these wasps find a nesting site and build the nest together. This species can be found in Central and South America. P. occidentalis preys on nectar, insects, and carbohydrate sources, while birds and ants prey on and parasitize them. P. occidentalis workers bite each other to communicate the time to start working.
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.
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.
Protonectarina sylveirae, commonly referred to as the Brazilian wasp, is a neotropical swarm-founding wasp species that ranges widely across South America. This species relies heavily on the consumption of animal protein rather than nectar. P. sylveirae preys heavily on agricultural pests to coffee crops, keeping pest populations low.
Belonogaster petiolata is a species of primitively eusocial wasp that dwells in southern Africa, in temperate or subhumid climate zones. This wasp species has a strong presence in South Africa and has also been seen in northern Johannesburg. Many colonies can be found in caves. The Sterkfontein Caves in South Africa, for example, contain large populations of B. petiolata.
Leipomeles dorsata is a neotropical paper wasp that is found across Central America and northern South America. It is a eusocial wasp with little differentiation between reproducing and non-reproducing females. In fact, workers can become temporary reproductives if the main reproductives are killed, allowing reproduction to continue until the main reproductive population recovers. The colony cycles through different ratios of main reproductive females and subordinate reproductive females, starting with few or no primary reproducing females, and increasing until there are only main reproductives.
Protopolybia exigua is a species of vespid wasp found in South America and Southern Brazil. These neotropical wasps, of the tribe Epiponini, form large colonies with multiple queens per colony. P. exigua are small wasps that find nourishment from nectar and prey on arthropods. Their nests are disc-shaped and hang from the undersides of leaves and tree branches. This particular species of wasp can be hard to study because they frequently abandon their nests. P. exigua continuously seek refuge from phorid fly attacks and thus often flee infested nests to build new ones. The wasps' most common predators are ants and the parasitoid phorid flies from the Phoridae family.
Polybia emaciata is a Neotropical swarm founding wasp that is mainly found in South America. This eusocial species has a unique colony structure in which multiple queens are present. Workers and queens are not morphologically distinct, but the high amount of relatedness maintained in the colony ensures that workers police each other. Polybia emaciata relies on a diet of liquid nectars which is supplemented with prey insects, particularly flies. It is well known for being one of only three wasp species in the genus Polybia that uses mud as the primary material for building its nest. Polybia emaciata is one of the least aggressive wasp species in the genus Polybia, and is known for its distinctive defensive behavior.
Polistes versicolor, also known as the variegated paper wasp or yellow paper wasp, is a subtropical social wasp within Polistes, the most common genus of paper wasp. It is the most widely distributed of South American wasp species and is particularly common in the Southeastern Brazilian states. This social wasp is commonly referred to as the yellow paper wasp due to the distinct yellow bands found on its thorax and abdomen. The P. versicolor nest, made of chewed vegetable fiber, is typically a single, uncovered comb attached to the substrate by a single petiole. The yellow wasp is frequently found in urban areas. New nests and colonies are usually founded by an association of females, sometimes in human buildings.
Polybia rejecta is a species of social wasp found in the Neotropics region of the world. It was discovered by Fabricius in South America in the 1790s. The wasp is associated with many other organisms, particularly specific species of ants and birds such as the Azteca ants and the cacique birds. This association is most beneficial to the ants and birds because of the aggressive protective nature of the wasp. The wasps will protect their nest even if it means death against any predator that approaches it and therefore this means that the association also protects the ants and birds. Additionally, the wasp is known for eating the eggs of red eyed tree frogs as a main way of subsistence. It also, like many other wasp species, has a caste system of queens and workers that is evident by difference in body size among the wasps; the biggest female becomes the queen.
Ropalidia romandi, also known as the yellow brown paper wasp or the yellow paper wasp. is a species of paper wasp found in Northern and Eastern Australia. R. romandi is a swarm-founding wasp, and manages perennial nests. Its nests are known as 'paper bag nests' and have different architectural structures, depending on the substrates from which they are built. The specific name honors Gustave, baron de Romand, a prominent French political figure and amateur entomologist.
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.
Parachartergus fraternus is a neotropical, swarm founding, polistine wasp species that is distributed throughout Central and South America. They live in nests in second growth tropical dry forests, near pasture fields, roadside areas, and urban areas as well. These wasps eat insects, such as caterpillars of Lepidoptera. They also drink nectar, honeydew, and water. The workers capture their prey during foraging. They also use venom to paralyze their prey in order to consume it later. P. fraternus wasps are not very aggressive and they do not attack when the nest is approached.
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.
Agelaia multipicta is a swarm-founding, highly eusocial wasp that lives in Mexico, Argentina, Trinidad and southern Brazil. It nests in natural cavities such as hollow trees and aggressively defends the nest from ants, who are brood predators. The workers and queens are morphologically distinguished by ovarian development as well as external features such as a larger petiole and gaster in the queen. Like other carrion-eating (necrophagous) wasp species, A. multipicta plays a scavenging role in the ecosystem. Agelaia multipicta was described by the Irish entomologist Alexander Henry Haliday in 1836.
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.
Polybia paulista is a species of eusocial wasp occurring in Brazil, Paraguay, and Argentina.
Olfactory cues were more likely to elicit landing than were visual cues.