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・ Scaptius chrysopera
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Scaptotrigona postica
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Scaptotrigona postica : ウィキペディア英語版
Scaptotrigona postica

''Scaptotrigona postica'' (also known locally as timba amarella) is a species of stingless bees that lives mainly in Brazil. They are eusocial bees in the tribe ''Meliponini''. ''S. postica'' is one of 25 species in the genus ''Scaptotrigona'' and are critical pollinators of the tropical rain forests of Brazil. They construct their nests in hollowed sections of tree trunks, allowing for effective guarding at the smaller entrance of the nest. This species shows colony structure similar to most members of the Meliponini tribe with three roles within the colony: queen, worker, and male. Furthermore, male production also follows the tribe norm as males hatch from unfertilized eggs laid by female workers and varies based on the available resources for the rest of the colony. ''S. postica'' individuals utilize different forms of communication from cuticular hydrocarbons to pheromones and scent trails to function as a unit. This is especially useful during worker foraging for nectar and pollen through the Brazilian tropical rain forests. ''S. postica'' is a very important pollinator of the Brazilian tropical rain forests and is widely appreciated for their honey. Stingless bees account for approximately 30% of all pollination of the Brazilian Caatinga and Pantanal ecosystems and up to 90% of the pollination for many species of the Brazilian Atlantic Forest and the Amazon.〔
==Taxonomy and phylogeny==
''S. postica'' is one of the 25 species in the genus ''Scaptotrigona'', a eusocial genus of bees. It was first described by Pierre André Latreille in 1807. In the past, it has also been called ''Melipona postica'', ''Trigona postica'' and ''Trigona rustica''. This bee is a member of many taxonomic sub groups including the subclass pterygota (winged insects), suborder apocrita, and subfamily Apinae (stingless bees). These groups of bees are winged, have a social hierarchy, and do not have defensive stingers. Other similar species in this genus include ''Scaptotrigona hellwegeri'', ''Scaptotrigona mexicans'' and ''Scaptotrigona pectoralis''.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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