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Brief Summary

provided by Catalog of Hymenoptera in America North of Mexico
This genus, which contains more than 40 species, is found only in the Western Hemisphere. While most of the species (26) occur on the continents, the fauna of the West Indies consists of 17 endemic species and none of the continental species extends into these islands. The majority of the continental species (18) are present in North America, although two of these (A. leunculus Vachal and A. nasutus Smith) are also present in South America where ten additional species are found. The fauna in America north of Mexico consists of 12 species with two additional ones (A. leunculus Vachal and A. mexicanus Roberts) expected to be collected here. Unlike the majority of our species whose ranges extend into our area (e.g., A. tyleri Cockerell) or extend south of here (e.g., A. femoratus Crawford), three of our species, A. coloradinus Crawford, A. sericeus (Forster), and A. virescens (Fabricius), are not known to occur south of here. ~Insofar as known, the species of this genus are polyleges of a wide variety of flowers. Some of our species collect pollen in the early morning around sunrise and again in the late afternoon toward sunset (Hurd and Linsley, 1975). A summary of the known biological information for the genus together with observations made in the insectary on three North American species (A. sericeus (Forster), A. splendens (Lepeletier), and A. texanus Cresson) has been published by Roberts (1969). All species of Agapostemon that have been studied exhibit either solitary or communal nesting behavior (Abrams and Eickwort, 1980. Search: Agriculture, Cornell Univ. Agr. Expt. Sta. 1: 17).
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Catalog of Hymenoptera in America North of Mexico. 1979. Prepared cooperatively by specialists on the various groups of Hymenoptera under the direction of Karl V. Krombein and Paul D. Hurd, Jr., Smithsonian Institution, and David R. Smith and B. D. Burks, Systematic Entomology Laboratory, Insect Identification and Beneficial Insect Introduction Institute. Science and Education Administration, United States Department of Agriculture.

Agapostemon ( Catalan; Valencian )

provided by wikipedia CA

Agapostemon és un gènere d'himenòpters apòcrits de la família Halictidae. És un grup d'abelles bastant comunes, en general de colors metàl·lics verds o blaus. Hi ha aproximadament 45 espècies en l'hemisferi occidental, des de Canadà a l'Argentina. Superficialment s'assemblen a alguns membres de la tribu Augochlorini, moltes de les quals també són metàl·liques verdoses. La majoria són abelles solitàries; solen fer els seus nius a la terra. Algunes espècies mostren el grau més primitiu de socialitat. Tenen nius comunals, on diverses femelles comparteixen l'entrada als seus respectius nius.

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Agapostemon

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The genus Agapostemon (literally "stamen loving") is a common group of Western Hemisphere sweat bees.

They are members of the family of bees known as Halictidae. Unlike other sweat bees, they are not attracted to human sweat.[1] They are generally green or blue, especially the head and thorax. Sometimes the abdomen in females is green or blue although it may be striped, and most males have the yellow-striped abdomen on a black or metallic background. They superficially resemble various members of another tribe, Augochlorini, which are also typically metallic green.

Nesting

All species of Agapostemon nest in the ground, sometimes in dense aggregations. Some species are communal such as A. virescens. In this and other communal species, multiple females share the same nest entrance, but beneath the common entrance burrow, construct their own portion of the nest. Thus each female digs her own brood cells and collects pollen and nectar to fashion the pollen ball upon which she will lay an egg.

Unlike other social bees, in communal bees there is no reproductive division of labor. The advantage of this form of sociality seems to be that kleptoparasitic Nomada bees have greater difficulty gaining access to the nest and brood cells when there are multiple females inside. This method of defense against the Cuckoo bee (Nomada) facilitates attacks by larvae of the Blister beetle.

Range

A. angelicus

Some 42 species in the genus range from Canada to Argentina . In cool temperate regions, there is one generation per year, with females being active in the early summer and males and pre-diapausing females active in the late summer. Only mated females survive the winter. This is probably because unmated females cannot enter diapause.[2] Males can often be seen in large numbers flying around shrubs with large flowers, such as Rose of Sharon. Agapostemon angelicus are native to the Texas high plains. They specialized in being pollinators for cotton.[3] They can serve as replacement for honey bees in pollination[4]

Types of flight

Like other bees, A. texanus can fly from a short or long distance. Their flight patterns usually rely on flower density; they favor flowers with high densities. Their flight patterns best resemble the bumble bee and the honey bee.[5]

Species

Over 40 species of Agapostemon have been identified:[6]

References

  1. ^ "Attracting Native Pollinators" (2011), The Xerces Society
  2. ^ Yanega, D. (1989-02-01). "Caste determination and differential diapause within the first brood of Halictus rubicundus in New York (Hymenoptera: Halictidae)". Behavioral Ecology and Sociobiology. 24 (2): 97–107. doi:10.1007/bf00299641. ISSN 0340-5443.
  3. ^ Berger, L.A (23 March 1984). "Seasonal Cycles of Agapostemon angelicus Cockerell Relative to Hybrid Cottonseed Production in Texas (Hymenoptera: Halictidae)". Journal of the Kansas Entomological Society: 1–8.
  4. ^ Berger, L.A. (23 March 1984). "Seasonal Cycles of Agapostemon angelicus Cockerell Relative to Hybrid Cottonseed Production in Texas (Hymenoptera: Halictidae)". Journal of the Kansas Entomological Society: 1–8.
  5. ^ Waddington, Keith (28 December 1978). "Flight Patterns of Three Species of Sweat Bees (Halictidae) Foraging at Convolvulus arvenis". Journal of the Kansas Entomological Society: 751–758.
  6. ^ Bisby F.A.; Roskov Y.R.; Orrell T.M.; Nicolson D.; Paglinawan L.E.; Bailly N.; Kirk P.M.; Bourgoin T.; Baillargeon G.; Ouvrard D. (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Retrieved September 24, 2012.

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Agapostemon: Brief Summary

provided by wikipedia EN

The genus Agapostemon (literally "stamen loving") is a common group of Western Hemisphere sweat bees.

They are members of the family of bees known as Halictidae. Unlike other sweat bees, they are not attracted to human sweat. They are generally green or blue, especially the head and thorax. Sometimes the abdomen in females is green or blue although it may be striped, and most males have the yellow-striped abdomen on a black or metallic background. They superficially resemble various members of another tribe, Augochlorini, which are also typically metallic green.

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Agapostemon ( Spanish; Castilian )

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Abeja metálica verde, hembra.

Agapostemon es un género de himenópteros apócritos de la familia Halictidae. Es un grupo de abejas bastante comunes, en general de colores metálicos verdes o azules. Hay aproximadamente cuarenta y cinco especies en el hemisferio occidental, desde Canadá a la Argentina. Superficialmente se parecen a algunos miembros de la tribu Augochlorini, muchas de las cuales también son metálicas verdosas. Se diferencian de ellas por poseer un borde grueso del propodeo y porque la tibia de la pata posterior es igual en longitud o más larga que el tarso.[1]​ Los machos de la mayoría de las especies y las hembras de algunas especies tienen bandas negras y blancas en el abdomen y el tórax verde.

La mayoría son abejas solitarias; suelen hacer sus nidos en la tierra. Algunas especies muestran el grado más primitivo de socialidad. Tienen nidos comunales, donde varias hembras comparten la entrada a sus respectivos nidos, aunque son independientes en cuanto a la construcción del resto del nido y del cuidado de la cría, por lo tanto no son verdaderamente sociales. La ventaja de esta forma de socialidad primitiva parece ser protección contra las abejas cleptoparasíticas, Nomada, que tienen mayor dificultad en invadir nidos donde hay varias hembras de Agapostemon presentes.

En las regiones templadas hay una generación anual con actividad en el verano temprano. Los machos y las hembras en prediapausa son activos en el verano tardío. Solo las hembras fecundadas sobreviven el invierno. A veces se ven grandes números de machos volando entre las flores.

Especies

Referencias

  1. «Halictidae». Archivado desde el original el 12 de octubre de 2008.
  2. Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (red.) (2011). «Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist.». Species 2000: Reading, UK. Consultado el 24 de septiembre de 2012.

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Agapostemon: Brief Summary ( Spanish; Castilian )

provided by wikipedia ES
 src= Abeja metálica verde, hembra.

Agapostemon es un género de himenópteros apócritos de la familia Halictidae. Es un grupo de abejas bastante comunes, en general de colores metálicos verdes o azules. Hay aproximadamente cuarenta y cinco especies en el hemisferio occidental, desde Canadá a la Argentina. Superficialmente se parecen a algunos miembros de la tribu Augochlorini, muchas de las cuales también son metálicas verdosas. Se diferencian de ellas por poseer un borde grueso del propodeo y porque la tibia de la pata posterior es igual en longitud o más larga que el tarso.​ Los machos de la mayoría de las especies y las hembras de algunas especies tienen bandas negras y blancas en el abdomen y el tórax verde.

La mayoría son abejas solitarias; suelen hacer sus nidos en la tierra. Algunas especies muestran el grado más primitivo de socialidad. Tienen nidos comunales, donde varias hembras comparten la entrada a sus respectivos nidos, aunque son independientes en cuanto a la construcción del resto del nido y del cuidado de la cría, por lo tanto no son verdaderamente sociales. La ventaja de esta forma de socialidad primitiva parece ser protección contra las abejas cleptoparasíticas, Nomada, que tienen mayor dificultad en invadir nidos donde hay varias hembras de Agapostemon presentes.

En las regiones templadas hay una generación anual con actividad en el verano temprano. Los machos y las hembras en prediapausa son activos en el verano tardío. Solo las hembras fecundadas sobreviven el invierno. A veces se ven grandes números de machos volando entre las flores.

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Agapostemon ( French )

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Agapostemon: Brief Summary ( French )

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Agapostemon est un genre d'insectes hyménoptères (abeilles) de la famille des Halictidae. Ce genre est unique à l'hémisphère ouest et compte surtout des espèces d'abeilles « sauvages » au thorax et à la tête iridescents de couleur verte ou bleue.

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Agapostemon ( Italian )

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Agapostemon è un genere di api endemiche dell'emisfero occidentale comunemente chiamate api del sudore, in quanto sono spesso attratte dalla sudorazione, di aspetto generalmente verde o blu (testa e torace sempre, a volte anche l'addome in alcune femmine). Ci sono circa 45 specie appartenenti a questo genere, che vanno dal Canada all'Argentina . Esse assomigliano superficialmente a vari membri della tribù Augochlorini, che sono tipicamente di colore verde metallico.

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Agapostemon sp.
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Agapostemon metallica verde.

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Agapostemon ( Dutch; Flemish )

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Insecten

Agapostemon is een geslacht van vliesvleugeligen uit de familie van de Halictidae.

Soorten

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Agapostemon: Brief Summary ( Dutch; Flemish )

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Agapostemon is een geslacht van vliesvleugeligen uit de familie van de Halictidae.

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