Euglossa dilemma

Last updated

Euglossa dilemma
Green Orchid Bee (Euglossa dilemma) (7406599274).jpg
Green orchid bee approaching flowers of the firebush Hamelia patens
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Apidae
Genus: Euglossa
Species:
E. dilemma
Binomial name
Euglossa dilemma
Bembé & Eltz, 2011

Euglossa dilemma, the green orchid bee or dilemma orchid bee, is a species of solitary euglossine bee native to a broad area of Central America, and recently introduced to Florida in the United States. It was first detected in Broward County, Florida in 2003, and initially identified as Euglossa viridissima , but further study revealed that E. viridissima as previously defined consisted of two cryptic species, and the one present in Florida was new to science. [1]

Contents

Taxonomy

Euglossa viridissima is a species of green orchid bee from Central America in which the males have two teeth on their mandibles. α The very similar bee that was first observed in Florida in 2003 was found to have three such teeth. Sequencing data from a mitochondrial gene was unable to separate E. viridissima and E. dilemma, indicating they are closely related and form a clade within Euglossa . [2] However, microsatellite allele frequencies varied between the two groups. Males of these bees store aromatic compounds extracted from various environmental sources in pouches on their hind legs. Certain characteristic compounds present as main ingredients in these perfumes in E. dilemma were found to be absent in E. viridissima. Electroantennography found differences between the groups in olfactory sensitivity to isomers of HNDB (2-hydroxy-6-nona-1,3-dienyl-benzaldehyde). It was therefore concluded that E. dilemma is a cryptic sister species of E. viridissima. [2]

Description

Green orchid bees are varying shades of glossy metallic green and can grow to a length of about 1.3 cm (0.5 in). The membranous wings are dark-coloured and translucent and the female has pollen baskets on her hind legs. The male has an enlarged joint on his hind leg where there is a pit for storing substances he gathers from plants. The female but not the male possesses a sting which can be used on more than one occasion but which is not as painful to humans as a honeybee's sting. This bee is very agile in the air, hovering for lengthy periods and darting between flowers. It might be confused with sweat bees in the family Halictidae, such as Augochloropsis , but orchid bees have much longer proboscises in order to gather nectar from flowers with long corolla tubes. [1]

Distribution and habitat

Green orchid bee gathering nectar Green Orchid Bee (now classified as Euglossa dilemma) (6266146378).jpg
Green orchid bee gathering nectar

The native range of Euglossa dilemma is in Central America where it extends from Costa Rica to Mexico. [3] In Florida it is thought to have originated from Mexico and arrived in the state by accident, perhaps being transported in a nest in a wooden structure such as a pallet. It was first detected in Broward County in 2003 and has since become established in Palm Beach County, Brevard County, and is expected to extend its range to most of the southern half of Florida. [1] In its native Mexico it is found in hot dry habitats including degraded forests, pastures, parks and gardens. It is less dependent on primary forests than most Euglossine bees.

Biology

Male orchid bees are specialised to visit particular species of neotropical orchid. This is a mutualistic arrangement in which the male bee benefits from gathering the fragrance ingredients supplied by the flower which he stores in his hollow hind legs, and the orchid benefits by being pollinated. [1] The male uses the fragrances during courtship. The species of orchid with which Euglossa dilemma is associated in its Central American home range is unknown, but in its new Florida habitat, it breeds successfully without the presence of any orchid, the male visiting other species of plants to gather the ingredients for his perfume. One of these plants is basil ( Ocimum basilicum ) and another Stemmadenia littoralis . [4] Rotten timber and wood oozing resin is another source of fragrances. [1] In Florida, the female bee gathers much of the pollen she collects from Senna mexicana but also visits other plants, and nectar is collected by both sexes, predominantly from Ruellia brittoniana and Tecoma stans . [4] This bee has also been seen feeding on Hamelia patens , Cheilocostus , Tradescantia pallida and Datura . [3]

A female Euglossa dilemma kneading pollen (slow motion).

There may be unexpected consequences of the naturalization of these bees in the United States. For example, in a similar situation in Florida, two fig species Ficus altissima and Ficus macrophylla have been introduced but did not spread because there was no suitable pollinator. With the arrival of the non-native wasps (Eupristina sp.), the figs acquired pollinating insects and became invasive. [4]

The male bee attracts a female by releasing his fragrance and fanning his wings to disperse it. The female builds a solitary nest out of propolis, an exudate from plants. The nest may contain up to twenty cells, in each of which she lays an egg. The female brings pollen and nectar to the nest to feed the developing larvae. Several bees may build their nests side by side but do not share the task of feeding the young. [1]

Notes

The males of E. viridissima almost always have two teeth; a third may be present, but it is in a different position from the third tooth of male E. dilemma. [2]

Related Research Articles

<span class="mw-page-title-main">Pollinator</span> Animal that moves pollen from the male anther of a flower to the female stigma

A pollinator is an animal that moves pollen from the male anther of a flower to the female stigma of a flower. This helps to bring about fertilization of the ovules in the flower by the male gametes from the pollen grains.

<span class="mw-page-title-main">Mason bee</span> Genus of insects

Mason bee is a name now commonly used for species of bees in the genus Osmia, of the family Megachilidae. Mason bees are named for their habit of using mud or other "masonry" products in constructing their nests, which are made in naturally occurring gaps such as between cracks in stones or other small dark cavities. When available, some species preferentially use hollow stems or holes in wood made by wood-boring insects.

<span class="mw-page-title-main">Entomophily</span> Form of pollination by insects

Entomophily or insect pollination is a form of pollination whereby pollen of plants, especially but not only of flowering plants, is distributed by insects. Flowers pollinated by insects typically advertise themselves with bright colours, sometimes with conspicuous patterns leading to rewards of pollen and nectar; they may also have an attractive scent which in some cases mimics insect pheromones. Insect pollinators such as bees have adaptations for their role, such as lapping or sucking mouthparts to take in nectar, and in some species also pollen baskets on their hind legs. This required the coevolution of insects and flowering plants in the development of pollination behaviour by the insects and pollination mechanisms by the flowers, benefiting both groups. Both the size and the density of a population are known to affect pollination and subsequent reproductive performance.

<span class="mw-page-title-main">Euglossini</span> Tribe of bees

The tribe Euglossini, in the subfamily Apinae, commonly known as orchid bees or euglossine bees, are the only group of corbiculate bees whose non-parasitic members do not all possess eusocial behavior.

<i>Habropoda laboriosa</i> Species of bee

Habropoda laboriosa, the southeastern blueberry bee, is a bee in the family Apidae. It is native to the eastern United States. It is regarded as the most efficient pollinator of southern rabbiteye blueberries, because the flowers require buzz pollination, and H. laboriosa is one of the few bees that exhibit this behavior. It is active for only a few weeks of the year, while the blueberries are in flower during early spring, when the temperature is warm and humid. H. laboriosa are solitary bees that live alone but nest in close proximity with other nests of their species. They have similar features to bumble bees, but they are smaller in size compared to them. H. laboriosa are arthropods so they have segmented bodies that are composed of the head, thorax, and abdomen.

<span class="mw-page-title-main">Bees and toxic chemicals</span>

Bees can suffer serious effects from toxic chemicals in their environments. These include various synthetic chemicals, particularly insecticides, as well as a variety of naturally occurring chemicals from plants, such as ethanol resulting from the fermentation of organic materials. Bee intoxication can result from exposure to ethanol from fermented nectar, ripe fruits, and manmade and natural chemicals in the environment.

<i>Vanilla planifolia</i> Species of orchid

Vanilla planifolia is a species of vanilla orchid native to Mexico, Central America, Colombia, and Brazil. It is one of the primary sources for vanilla flavouring, due to its high vanillin content. Common names include flat-leaved vanilla, and West Indian vanilla. Often, it is simply referred to as "the vanilla". It was first scientifically named in 1808. With the species' population in decline and its habitats being converted to other purposes, the IUCN has assessed Vanilla planifolia as Endangered.

<i>Euglossa</i> Genus of bees

Euglossa is a genus of orchid bees (Euglossini). Like all their close relatives, they are native to the Neotropics; an introduced population exists in Florida. They are typically bright metallic blue, green, coppery, or golden.

<i>Euglossa hyacinthina</i> Species of bee

Euglossa hyacinthina, is a species of the orchid bee tribe Euglossini in the family Apidae. With a tongue that can get up to as long as 4 cm, this orchid bee species is found in Central America. Living in a neotropical climate, E.hyacinthina has adapted to hot and humid weather. The bee has darkly shaded, translucent wings and a metallic, glossy blue skeleton.

<i>Eulaema meriana</i> Species of bee

Eulaema meriana is a large-bodied bee species in the tribe Euglossini, otherwise known as the orchid bees. The species is a solitary bee and is native to tropical Central and South America. The male collects fragrances from orchid flowers, which it stores in hollows in its hind legs. Orchids can be deceptive by mimicking the form of a female and her sex pheromone, thus luring male bees or wasps. Pollination will take place as the males attempt to mate with the labellum, or the tip petal of the flower. Male E. meriana are territorial and have a particular perch on a tree trunk where it displays to attract a female. After mating, the female builds a nest with urn-shaped cells made with mud, feces, and plant resin, and provisions these with nectar and pollen before laying an egg in each. These bees also have complex foraging and wing buzzing behaviors and are part of a mimicry complex.

<i>Megachile melanophaea</i> Species of bee

Megachile melanophaea is a species of leaf-cutter bee in the family Megachilidae. It was first described by the British zoologist Frederick Smith in 1853. It is native to North America.

<span class="mw-page-title-main">Pollination trap</span> Plant flower structures

Pollination traps or trap-flowers are plant flower structures that aid the trapping of insects, mainly flies, so as to enhance their effectiveness in pollination. The structures of pollination traps can include deep tubular corollas with downward pointing hairs, slippery surfaces, adhesive liquid, attractants, flower closing and other mechanisms.

<i>Ptilothrix</i> Genus of bees

Ptilothrix is a genus within the tribe Emphorini of the family Apidae. Bees of this genus can range from 7 to 15 mm. Ptilothrix species are solitary, ground-nesting bees. These bees have especially prominent hairs in the scopae of their hind legs, to help gather pollen to provision their nests. Ptilothrix species specialize on certain families of plants for their pollen, including the families Malvaceae, Convolvulaceae, Onagraceae, Cactaceae, Pontederiaceae, and Asteraceae. The genus is found in the New World, with species ranging across the Americas.

<i>Euglossa cordata</i> Species of bee

Euglossa cordata is a primitively eusocial orchid bee of the American tropics. The species is known for its green body color and ability to fly distances of over 50 km. Males mostly disperse and leave their home nests, while females have been observed to possess philopatric behavior. Because of this, sightings are rare and little is known about the species. However, it has been observed that adults who pollinate certain species of orchids will become intoxicated during the pollination.

<i>Eufriesea surinamensis</i> Species of bee

Eufriesea surinamensis belongs to the tribe of euglossine bees and as such is a species of orchid bee. This should not be mistaken with the species group surinamensis, which includes Ef. surinamensis among other Eufriesea species.

<i>Euglossa imperialis</i> Species of bee

Euglossa imperialis is a bee species in the family Apidae. It is considered to be one of the most important pollinators to many Neotropical orchid species in mainland tropical America. It is also one of the most common non-parasitic euglossine species in lowland Panama. E. imperialis, unlike many other bee species, is not a social bee in the sense that there is no apparent morphological or physiological division within the species to distinguish individual bees to be part of a worker or reproductive caste.

<i>Trigona fuscipennis</i> Species of bee

Trigona fuscipennis is a stingless bee species that originates in Mexico but is also found in Central and South America. They are an advanced eusocial group of bees and play a key role as pollinators in wet rainforests. The species has many common names, including mapaitero, sanharó, abelha-brava, xnuk, k'uris-kab, enreda, corta-cabelo, currunchos, zagaño, and enredapelos.

<i>Euglossa mixta</i> Species of insect

Euglossa mixta is a species of orchid bee native to Central America and South America, it is a member of the genus Euglossa a group of brilliant green and blue bees specialized in pollinating certain species of orchids.

<span class="mw-page-title-main">Pollination of orchids</span>

The pollination of orchids is a complex chapter in the biology of this family of plants that are distinguished by the complexity of their flowers and by intricate ecological interactions with their pollinator agents. It has captured the attention of numerous scientists over time, including Charles Darwin, father of the theory of evolution by natural selection. Darwin published in 1862 the first observations of the fundamental role of insects in orchid pollination, in his book The Fertilization of Orchids. Darwin stated that the varied stratagems orchids use to attract their pollinators transcend the imagination of any human being.

<i>Euglossa viridissima</i> Species of bee

Euglossa viridissima is a species of orchid bee native to Central America, historically confused with a cryptic sister species, Euglossa dilemma.

References

  1. 1 2 3 4 5 6 Mullins, Aaron. "Green orchid bee: Euglossa dilemma Friese". Featured Creatures. University of Florida. Archived from the original on 2021-09-27. Retrieved 2014-03-08.
  2. 1 2 3 Eltz, Thomas; Fritzsch, Falko; Zimmermann, Yvonne; Pech, Jorge Ramirez; Ramirez, Santiago R.; Quezada-Euan, J. Javier G.; Bembe, Benjamin (2011). "Characterization of the orchid bee Euglossa viridissima (Apidae: Euglossini) and a novel cryptic sibling species, by morphological, chemical, and genetic characters". Zoological Journal of the Linnean Society. 2011 (163): 1064–1076. doi: 10.1111/j.1096-3642.2011.00740.x .
  3. 1 2 Hauser, Martin (2006-05-11). "Species Euglossa dilemma - Dilemma Orchid Bee". BugGuide. Archived from the original on 2014-03-15. Retrieved 2014-03-11.
  4. 1 2 3 Pemberton, Robert W.; Wheeler, Gregory S. (2006). "Orchid bees don't need orchids: evidence from the naturalization of an orchid bee in Florida". Ecology. 87 (8): 1995–2001. doi:10.1890/0012-9658(2006)87[1995:OBDNOE]2.0.CO;2. Archived from the original on 2020-11-15. Retrieved 2024-05-24.