Ropalidia revolutionalis | |
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Ropalidia revolutionalis photographed in Brisbane, Australia | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hymenoptera |
Family: | Vespidae |
Subfamily: | Polistinae |
Tribe: | Ropalidiini |
Genus: | Ropalidia |
Species: | R. revolutionalis |
Binomial name | |
Ropalidia revolutionalis (de Saussure, 1853) | |
Ropalidia revolutionalis, the stick-nest brown paper wasp, is a diurnal social wasp of the family Vespidae. They are known for the distinctive combs they make for their nests, and they are mostly found in Queensland, Australia in the areas of Brisbane and Townsville. [1] [ unreliable source ] They are an independent founding wasp species, and they build new nests each spring. [2] They can be helpful because they control insect pests in gardens. [3]
Ropalidia revolutionalis were first classified by Henri Louis Frédéric de Saussure in 1853. [4] They are part of the Polistine tribe Ropalidiini , which includes paper wasps in the Australasian region, specifically in the Lesser Sunda Islands and the northern regions of Australia. [4] [5] They are also part of the genus Ropalidia, which is the only genus that contains both swarm-founding and independent founding wasp species. [6]
R. revolutionalis are small, dark, reddish brown wasps with body lengths of 8 to 10 mm. When viewed closely, they have remarkable patterns on their bodies, and they have eyes with multiple lenses. They are slightly smaller than species from the family of Polistes . This is because their abdomens have a segment after the waist that is slimmer than the following segment. Although these wasps are not considered especially aggressive, they will sting if their nests are disturbed. [3]
The nests of R. revolutionalis consist of several combs each about 100 mm long with two columns of cells that resemble sticks hanging from a branch. [1] [ unreliable source ] Their nests are usually found on shrubs, hanging baskets, under eaves, or near other sheltered areas. [7] These wasps are found mainly in south-eastern to northern Queensland, Australia. [3]
Ropalidia revolutionalis is an independent-founding wasp species that begins building nests each spring. Each nest is founded by a small association of females that begin by creating a single comb. During this pre-emergence stage, the number of egg-laying females decreases to only one being present in the nest (haplometrosis). However, after the emergence of the first progeny of adults, the females create smaller combs alongside the largest comb, and more potential egg-layers join the colony as the construction progresses (pleometrosis). The progeny join the adults in taking care of the nests. [2] Near the end of summer, the queen produces both male wasps and fertile female wasps. These progeny then mate with wasps from other colonies, and then the females find secure locations in which they can reside during the winter. At this point, the colonies begin to deteriorate, and the females start their own colonies the following spring. [7]
Each colony begins as a single comb constructed by a few females or by one female, and eventually the colony gains smaller satellite combs as the year progresses. [2] Workers create these combs by using pulp and decaying wood which they chew and mix with their saliva. [8] Each comb is made up of two rows of cells attached by a pedicle (stalk) at the upper end. [3] Also, occasionally females reconstruct old nests that partially deteriorated during the winter, which suggests that some colonies last more than one year. [2]
Each larva of the R. revolutionalis is kept in an individual cell in the nest. Each of these cells has a transparent bottom where the workers remove feces from the cell. Foragers return to the nest with caterpillars and other soft bodied insects. Before presenting food to the larvae, they drum their heads on the inside of the cell. Females rear the young into August even as the nest deteriorates, and the larvae eventually pupate and become adult wasps. [9]
During the day, foragers search for flowers and small prey. They bring back soft insects for the larvae and nectar for the adults. [1] [ unreliable source ] When temperatures are high, workers will often raise their abdomens, draw their legs in, and fan their wings rapidly in an effort to cool down the nest. They also continually construct and take care of the cells in the comb. [9]
Females exchange food either by facing each other and engaging in trophallaxis (the transfer of liquid food by putting the mandibles in opposition) or in some cases by mounting another female and bending over her thorax to transfer food. The reproductive females solicit the most frequently. [2] [8]
When other insects approach the nest, the dominant individuals (functional queens) may vibrate their wings or assume a stance of alarm to warn the other females of approaching danger. [2] Females also demonstrate alarm through agitated movement. This is usually demonstrated by contracting and expanding their abdomens or by holding their antennae straight out from their bodies. [8]
Each nest usually contains several larger, dominant (queen-like but not reproducing) females. [10] These females occasionally engage in aggressive acts such as darting around for short intervals [2] or climbing onto the backs of subordinates and chewing or biting. [8] They also tend to occupy the largest comb, while subordinates (those that lack developed eggs) are often forced onto smaller combs or reside on the substrate of the ceiling. Acts of dominance also appear to increase as the colony cycle progresses, so it is possible that some acts of dominance may be performed by the parent-generation on the newly emerging adults. [2]
Ropalidia revolutionalis females almost always mate singly, increasing the amount of relatedness within the colony. Also, there is little to no inbreeding within the colonies. This is because males leave the nest and mate with females from other colonies, and newly fertile females also mate with non-related males before hiding during the winter. [11]
Sometimes eggs laid by subordinate females are eaten by dominant females, but multiple females can still lay eggs after the colony has reached the post-emergence stage. Also, there is usually one primary dominant reproducer, [2] and that producer stays in the nest and sits on capped cells containing pupae. [8]
The dominant reproductive female remains dominant until she dies. After this occurs, the colony goes through a short period of having multiple queens (often daughters of the previous queen). Eventually, one queen becomes dominant again, but the nest still contains a few less dominant queens. [10]
The individuals in each colony can usually be separated into three groups: on the nest, next to the nest, or absent from the nest. Those who are on the nest usually consist of the dominant reproductive female, queens, and those caring for the brood or taking care of the nest. If more than one reproducing female is present in a nest, the less dominant one either stays on a smaller comb or remains next to the nest out of the way of the dominant individual. Non-reproductive individuals can reside in all three groups, but they usually remain either next to the nest or absent from the nest foraging for food. If they are on the nest, the dominants often force these subordinates onto smaller combs. [8]
If a member of either sex of R. revolutionalis feels threatened, the wasp assumes a defensive position on the nest. It will warn the intruder to retreat by first lifting and spreading its wings, and then waving its front legs and sometimes shaking its body. If the threat does not go away, the wasp will then fly at and often sting the intruder. [9]
Since R. revolutionalis queens mate singly, there is a high level of relatedness within the colony, and the workers are more likely to favor the sons produced by workers rather than sons produced by the queen because the workers are more closely related to each other's sons. This can create potential conflict. However, when there are multiple queens in a colony, the level of relatedness decreases, and the workers are more likely to favor the queen's sons. So, the workers switch between wanting to invest in new queens and wanting to invest in males depending on how many queens already exist in the colony. [11]
Ropalidia revolutionalis help control pests in gardens by catching caterpillars and other insects for their larvae. If possible, their nests are best left alone. However, if disturbed, they will sting. [9] Their venom contains 5-hydroxytryptamine, which is thought to be a pain-producing compound, though the pharmacological mode of action remains unknown. [12] [3]
Dolichovespula maculata is a species of wasp in the genus Dolichovespula and a member of the eusocial, cosmopolitan family Vespidae. It is known by many colloquial names, primarily bald-faced hornet, but also including bald-faced aerial yellowjacket, bald-faced wasp, bald hornet, white-faced hornet, blackjacket, white-tailed hornet, spruce wasp, and bull wasp. Technically a species of yellowjacket wasp, it is not one of the true hornets, which are in the genus Vespa. Colonies contain 400 to 700 workers, the largest recorded colony size in its genus, Dolichovespula. It builds a characteristic large hanging paper nest up to 58 cm (23 in) in length. Workers aggressively defend their nest by repeatedly stinging invaders.
The Polistinae is a subfamily of eusocial wasps belonging to the family Vespidae. They are closely related to the 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.
The European paper wasp is one of the most common and well-known species of social wasps in the genus Polistes. Its diet is more diverse than those of most Polistes species—many genera of insects versus mainly caterpillars in other Polistes—giving it superior survivability compared to other wasp species during a shortage of resources.
Polistes gallicus is a species of paper wasp found in various parts of Europe, excluding England, Denmark, and Scandinavia, from warmer climates to cooler regions north of the Alps. Nests of these social insects are created in these various conditions. The Polistes species use an oral secretion to construct their nests, which consist of a combination of saliva and chewed plant fibers. This structural mixture physically protects the nest from various harsh elements and from weathering over time.
Polistes humilis, known as the Australian paper wasp, is a species of wasp in the family Vespidae that is found throughout Australia and which has been introduced to northern New Zealand. These paper wasps can be identified by their long thin legs and banded yellow and black coloring. They have been known to re-utilize old nests. While the species does not exhibit morphological class differences, there are distinct behavioral differences between queens and workers. In addition, the species is eusocial and benefits from relatedness between individuals. They are known for delivering a painful sting, especially when their nest is disturbed, a behavior that has been developed as a nest defense mechanism. While wasps are often viewed negatively, they play an important pollination role for many plants.
Ropalidia marginata is an Old World species of paper wasp. It is primitively eusocial, not showing the same bias in brood care seen in other social insects with greater asymmetry in relatedness. The species employs a variety of colony founding strategies, sometimes with single founders and sometimes in groups of variable number. The queen does not use physical dominance to control workers; there is evidence of pheromones being used to suppress other female workers from overtaking queenship.
Polistes annularis is a species of paper wasp found throughout the eastern half of the United States. This species of red paper wasp is known for its large size and its red-and-black coloration and is variably referred to as a ringed paper wasp or jack Spaniard wasp. It builds its nest under overhangs near bodies of water that minimize the amount of sunlight penetration. It clusters its nests together in large aggregations, and consumes nectar and other insects. Its principal predator is the ant, although birds are also known to prey on it. Unlike other wasps, P. annularis is relatively robust in winter conditions, and has also been observed to store honey in advance of hibernation. This species has also been used as a model species to demonstrate the ability to use microsatellite markers in maternity assignment of social insects.
Polistes fuscatus, whose common name is the dark or northern paper wasp, is widely found in eastern North America, from southern Canada through the southern United States. It often nests around human development. However, it greatly prefers areas in which wood is readily available for use as nest material, therefore they are also found near and in woodlands and savannas. P. fuscatus is a social wasp that is part of a complex society based around a single dominant foundress along with other cofoundresses and a dominance hierarchy.
Polistes exclamans, the Guinea paper wasp, is a social wasp and is part of the family Vespidae of the order Hymenoptera. It is found throughout the United States, Mexico, the Bahamas, Jamaica and parts of Canada. Due to solitary nest founding by queens, P. exclamans has extended its range in the past few decades and now covers the eastern half of the United States, as well as part of the north. This expansion is typically attributed to changing global climate and temperatures. P. exclamans has three specific castes, including males, workers, and queens, but the dominance hierarchy is further distinguished by age. The older the wasp is, the higher it is in ranking within the colony. In most P. exclamans nests, there is one queen who lays all the eggs in the colony. The physiological similarities between the worker and queen castes have led to experiments attempting to distinguish the characteristics of these two castes and how they are determined, though males have easily identifiable physiological characteristics. Since P. exclamans live in relatively small, open combed nests, they are often subject to predators and parasites, such as Chalcoela iphitalis, Elasmus polistis, and birds. P. exclamans have defense and recognition strategies that help protect against these predators and parasites.
Polistes instabilis, or unstable paper wasp is a type of paper wasp, is a neotropical, eusocial wasp that can be found in tropical and subtropical areas such as Central America and South America. It can be easily identified with its characteristic yellow, brown, and reddish markings, and it builds nests made from chewing plant fibers and making them into paper.
Polistes snelleni, the Japanese paper wasp, is a common social wasp species in central and northern Japan. P. snelleni is also found in northern China, Korea, and the Russian Far East. Due to the different climates in these regions, P. snelleni is able to adapt to different temperatures and climatic conditions. P. snelleni is typically found in hilly or submontane areas, so they are classified in the semi-highland category.
Polistes bellicosus is a social paper wasp from the order Hymenoptera typically found within Texas, namely the Houston area. Like other paper wasps, Polistes bellicosus build nests by manipulating exposed fibers into paper to create cells. P. bellicosus often rebuild their nests at least once per colony season due to predation.
Polistes canadensis is a species of red paper wasp found in the Neotropical realm. It is a primitively eusocial wasp as a member of the subfamily Polistinae. A largely predatory species, it hunts for caterpillar meat to supply its colony, often supplementing its developing larvae with nectar. The most widely distributed American species of the genus Polistes, it colonizes multiple combs, which it rears year-round.
Polistes atrimandibularis is one of four obligate social parasites among the Polistes wasps found in Europe. Of the four social paper wasp parasite species known, it is the smallest. It parasitizes multiple species such as P. dominula, P. nimpha, P. associus, P. gallicus, and P. biglumis. Females of P. atrimandibularis are unable to build a nest or produce workers, and therefore rely entirely on the host colony.
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.
Polistes biglumis is a species of social wasp within Polistes, the most common genus of paper wasp. It is distinguished mainly by its tendency to reside in montane climates in meadows or alpine areas. Selection pressure from the wasp's environment has led to several idiosyncrasies of its behavior and lifecycle with respect to its relative species in the genus Polistes. It alone among paper wasps is often polyandrous. In addition, it has a truncated nesting season that gives rise to unique competitive dynamics among females of the species. P. biglumis wasps use an odor-based recognition system that is the basis for all wasp-to-wasp interaction of the species. The wasp's lifecycle is highly intertwined with that of Polistes atrimandibularis, an obligate social parasite wasp that frequently invades the combs of P. biglumis wasps.
Polistes japonicus is a eusocial paper wasp found in Japan. It was first described by Henri Louis Frédéric de Saussure in 1858. It is closely related to Polistes formosanus. This species lives in small colonies with few workers and a foundress queen. Nests of these wasps are sometimes used as a traditional medicine in Korea, China, and Japan.
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.
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.
Polistes dorsalis is a species of social wasps that can be found throughout various parts of North America. It is classified under the Vespidae within the genus of Polistes. Male Polistes dorsalis wasps can be distinguished from other Polistes species by their distinctly prominent median tubercle of sternum 7. Both sexes can also be recognized due to their v- shaped yellow markings on their head. They are distributed widely across North America and can be found in sheltered nests, typically closer to the ground. These wasps live in a dominance hierarchy in which the queen's role differs from that of ordinary workers. When threatened, these wasps can deliver moderately painful stings. Their venom might also be of human interest for their antimicrobial uses.
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: CS1 maint: multiple names: authors list (link)The low molecular weight fraction of Vespid venom includes biologically active amines. In Polistes, serotonine, histamine, tyramine and dopamine are reported (Nakajima 1985). In P. humilis (as well as in Ropalidia revolutionalis), Owen (1979) reported the presence of 5-hydroxytryptoamine. The pharmacological action of these substances is unknown, but Nakajima (1985) considered them the major pain producing components in the venom.