Lestrimelitta limao | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hymenoptera |
Family: | Apidae |
Genus: | Lestrimelitta |
Species: | L. limao |
Binomial name | |
Lestrimelitta limao | |
Lestrimelitta limao is a neotropical eusocial bee species found in Brazil and Panama and is part of the Apidae family. It is a species of stingless bees that practices obligate nest robbing. [2] They have never been spotted foraging from flowers, [3] an observation that supports their raiding behavior. Because of their lack of hind corbiculae, they must raid to obtain enough protein in their diet in the form of pollen and nectar. [4] Lestrimelitta limao secrete a lemon-scented alarm allomone, from which they receive their name, in order to conduct successful raids. L. limao are hypothesized to produce poisonous honey that is toxic if consumed by humans. Because robber bees are so rare and difficult to observe, there is a limited scope of information available.
Lestrimelitta limao is part of the Apidae family, which consists of bumble bees, euglossines, honey bees, and stingless bees. This species is within the tribe Meliponini. L. limao usually visit the nests of the same family, most notably, Trigona .
The Lestrimelitta limao species is divided into the workers, males and queens within each colony. Males are about the same size as workers, but the queens are noticeably larger. All members of the species are of shiny black coloration with hairs sparsely found on the body and densely found of the femora and tibiae. The hairs on the tibiae are short and yellow, while the sparse body hairs are black. The wings of L. limao contain barely noticeable cubital veins. Additionally they are identifiable by their lack of a functional worker corbiculae, [3] elongated gut, fewer olfactory discs, and through their unique cleptobiotic behavior. A L. limao colony is generally composed of guards, workers, and scouts that all work towards raiding neighboring stingless bee colonies. There is no job specialization according to age.
The queen of Lestrimelitta limao will mate with multiple males. While there is one gravid queen, there are typically two or three virgin queens within a colony. The queen has longer and more robust legs than the workers or the males as well as a more developed malar space. While their wings are similar is shape and structure to workers, queen wings contain four to five hamuli. Gravid queens range from nine to 10.5 millimeters in length while virgin queens are approximately seven millimeters in length.
Each L. limao worker wing usually contains five or six hamuli. Workers range from 5.5 to 6.25 millimeters in length, about two millimeters in width, and five to 5.5 millimeters in forewing length.
The males are slightly smaller than workers, having smaller heads, wider eyes, shorter malar space, and a narrower facial quadrangle. The flagellum of the male is made of 12 joints, and is actually londer than that of the cospecific worker. While the queen and workers have six visible tergites, males have seven. Males range from 5.5 to six millimeters in length, about two millimeters in width, and 4.5 to five millimeters in forewing length. [5]
Lestrimelitta limao nests are primarily built elevated off the ground. The surface of the nests remained a thin soft layer, but during repair, an involucrum forms in which old architecture is built over using new structures. Workers use building material acquired from raids of nearby stingless bee nests. Numerous blind sac elongate protuberances of 1-1.5 cm in height and diameter are built all over the surface. There is high variability in these protuberances due to a lack of integration of individual activities of the workers during nest repair.
Within the nest, there is usually large entrance tube that can extend up to 35 cm. This entrance tube contains stalactite-like protuberances on the underside of the nest. Researcher observed the constant smoothness and roundness of the interior of the flight tube. This main entrance is sealed using a waxy resin substance to prevent intruders from entering at night. Depending on the weather, guard bees will situate themselves in the inner margins of the nest entrance, or directly outside of it. [3] The presence of an entrance tube is common in stingless bee nests and can be found in many species, such as tetragonisca angustula , to help protect the nest. [6]
Lestrimelitta limao are found in Brazil and Panama and are considered a rare and dispersed species. Their nests can be found high up, in hollow tree trunks, but have occasionally been seen a foot off the ground or along the sides of walls. Lestrimellita limao colonies will strategically build their nests within 10 feet of other meliponine nests to make nest robbing more manageable. [7]
As obligate nest robbers, Lestrimelitta limao must visit neighboring nests to fulfill its nutritional needs. Usually, a host nest would be occupied for about 4 hours, but occasionally, a raid could last a maximum of 5 days. During the rainy season, there is a greater recurrence of raids due to the lower abundance of flowers. Mass raids involve up to 600 L. limao bees, while mild raids for nest material involve only a few. It is possible for multiple meliponine colonies may be raided simultaneously. [7] On occasion, L. limao may evict or exterminate the original inhabitants of the host nest. Though instances have been recorded, raiders will rarely take permanent possession of the stores within the nest and the nest itself. [8]
Lestrimelitta limao scouts leave to gather information about potential victims at nearby meliponine nests. These workers have large cephalic gland reservoirs of citral and chemical isomers. These chemicals are liberated when they are killed at the host's nest entrance, recruiting the scout's nest mates. The release of these chemicals is what attracts more L. limao workers, initiating the raid. [9]
At their own nests, guards are not aggressive, but at the entrance of host nests, they form a circle in order to defend it from the hosts and from other insects. Lestrimelitta limao guards surround the outside of hosts nest, aligned side-by-side, before and during a raid. These guard ring robbers occasionally raise their abdomens, exposing their whitish intersegmental region and fan their wings. They release citral from their mandibular glands, an act that must be well timed relative to the progression and initiation of the raid.
Workers place small pieces of resin over the entrance holes to prevent ants and the hosts from entering the entrance tube during the raid. Once the raid is complete, they remove the seal.
While bees of Lestrimelitta limao colonies have never been observed on flowers, they have been seen on poisonous plants. It is possible that the honey of L. limao causes illness and paralysis and has therefore been deemed toxic. In 1895, it was cited that the people of Alto Parana of Misoines use the same amount of honey produced by the “irati” (the culture’s name for L. limao) to treat the same paralysis that it causes. Similarly, in 1930 Nordenskioid cited the Guarayu Indians of Bolivia’s use of the honey to cure paralysis. [10] The accounts of the effects of L. limao honey on different persons suggests that the honey may contain grayanotoxins and cause mad honey disease.
Stingless bees (SB), sometimes called stingless honey bees or simply meliponines, are a large group of bees (from about 462 to 552 described species), comprising the tribe Meliponini (or subtribe Meliponina according to other authors). They belong in the family Apidae (subfamily Apinae), and are closely related to common honey bees (HB, tribe Apini), orchid bees (tribe Euglossini), and bumblebees (tribe Bombini). These four bee tribes belong to the corbiculate bees monophyletic group. Meliponines have stingers, but they are highly reduced and cannot be used for defense, though these bees exhibit other defensive behaviors and mechanisms. Meliponines are not the only type of bee incapable of stinging: all male bees and many female bees of several other families, such as Andrenidae and Megachilidae (tribe Dioxyini), also cannot sting.
Schwarziana quadripunctata is a small, stingless bee found in a stretch of the South American Amazon from Goiás, Brazil, through Paraguay, to Misiones, Argentina. This highly eusocial insect constructs earthen nests in the subterranean level of the subtropical environment, an unusual feature among other stingless bees. The species ranges in sizes from 6.0 to 7.5 millimetres and feeds on a diverse diet of flowering plants found abundantly on the forest floor, including guacatonga and the mistletoe species Struthanthus concinnus.
Tetragonula carbonaria is a stingless bee, endemic to the north-east coast of Australia. Its common name is sugarbag bee. They are also occasionally referred to as bush bees. The bee is known to pollinate orchid species, such as Dendrobium lichenastrum, D. toressae, and D. speciosum. It has been identified as an insect that collects pollen from the cycad Cycas media. They are also known for their small body size, reduced wing venation, and highly developed social structure comparable to honey bees.
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Lestrimelitta is a genus of stingless bees found in the Neotropics, from Mexico to Brazil and Argentina, with about 20 known species. They are small, shining black species from 4 to 7 mm in length, with rounded heads and reduced pollen baskets. Unlike most eusocial bees, they do not gather their own pollen and nectar from flowers, thus are not pollinators, but instead they invade the colonies of other stingless bee species and rob their pollen and honey stores. They do not initiate their own nests, but they will "evict" another stingless bee colony from its nest, and convert the pre-existing nest to house their own colony.
Tetragonisca angustula is a small eusocial stingless bee found in México, Central and South America. It is known by a variety of names in different regions. A subspecies, Tetragonisca angustula fiebrigi, occupies different areas in South America and has a slightly different coloration.
The Indian stingless bee or dammar bee, Tetragonula iridipennis, is a species of bee belonging to the family Apidae, subfamily Apinae. It was first described by Frederick Smith in 1854 who found the species in what is now the island of Sri Lanka. Many older references erroneously placed this species in Melipona, an unrelated genus from the New World, and until recently it was placed in Trigona, therefore still often mistakenly referred to as Trigona iridipennis. For centuries, colonies of T. iridipennis have been kept in objects such as clay pots so that their highly prized medicinal honey can be utilized.
Melipona bicolorLepeletier, 1836, commonly known as Guaraipo or Guarupu, is a eusocial bee found primarily in South America. It is an inhabitant of the Araucaria Forest and the Atlantic Rainforest, and is most commonly found from South to East Brazil, Bolivia, Argentina, and Paraguay. It prefers to nest close to the soil, in hollowed trunks or roots of trees. M. bicolor is a member of the tribe Meliponini, and is therefore a stingless bee. This species is unique among the stingless bees species because it is polygynous, which is rare for eusocial bees.
Plebeia remota is a species of stingless bee that is in the family Apidae and tribe Meliponini. Bees of the species are normally found in a few states in southern Brazil and their nests can be found in tree cavities. Depending on the region, P. remota may have a different morphology and exhibit different behaviors. The bee's diet consists of nectar and pollen that are collected intensely from a few sources. Researchers have conducted a multitude of studies analyzing the changes that occur in the colony during reproductive diapause and what happens during the provisioning and oviposition process or POP.
Melipona beecheii is a species of eusocial stingless bee. It is native to Central America from the Yucatán Peninsula in the north to Costa Rica in the south. M. beecheii was cultivated in the Yucatán Peninsula starting in the pre-Columbian era by the ancient Maya civilization. The Mayan name for M. beecheii is xunan kab, which translates roughly to "regal lady bee". M. beecheii serves as the subject of various Mayan religious ceremonies.
Trigona corvina is a species of stingless bee that lives primarily in Central and South America. In Panama, they are sometimes known as zagañas. They live in protective nests high in the trees, but they can be extremely aggressive and territorial over their resources. They use their pheromones to protect their food sources and to signal their location to nest mates. This black stingless bees of the tribe Meliponini can be parasitic toward citrus trees but also helpful for crop pollination.
Nannotrigona testaceicornis is a eusocial stingless bee species of the order Hymenoptera and the genus Nannotrigona. Its local common name is abelhas iraí. This species has a large geographic distribution and occupies different biomes, including urban areas, around Neotropical America. The bees of this species nest in trees or artificial cavities because of this broad distribution. N. testaceicornis is important for agriculture because it will pollinate a vast number of plant species year round.
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Paratrigona subnuda, commonly known as the jataí-da-terra, is a species of eusocial stingless bee in the family Apidae and tribe Meliponini. These social bees are prevalent in Neotropical moist forests, including Brazilian Atlantic and other South American forests. They inhabit spherical nests in moist underground environments with their forest habitats. Within their Neotropical habitats the P. subnuda is considered to be a very successful and common species of bee. P. subnuda’s main source of food is pollen and nectar from a large variety of native Mesoamerican tropical plants. They have been extensively studied due to social conflicts arising from single mate behaviors and particular virgin behaviors. P. subnuda also exhibits the particular daily behavior in which they open the nest entrance at dawn and close the entrance at dusk when all their activities are done.
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