Nest structure and notes on the social behavior of Augochlora amphitrite (Schrottky) (Hymenoptera, Halictidae)

The nesting biology of Augochlora (Augochlora) amphitrite (Schrottky) in a natural reserve in the Province of Buenos Aires, Argentina, is described. The species nests in decaying wood. Two types of nest architecture were found, which differed according to the substrate where they were built, either...

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Main Authors: Milagros Dalmazzo, Arturo Roig Alsina
Format: Article
Language:English
Published: Pensoft Publishers 2012-05-01
Series:Journal of Hymenoptera Research
Online Access:http://jhr.pensoft.net/lib/ajax_srv/article_elements_srv.php?action=download_pdf&item_id=1597
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author Milagros Dalmazzo
Arturo Roig Alsina
author_facet Milagros Dalmazzo
Arturo Roig Alsina
author_sort Milagros Dalmazzo
collection DOAJ
description The nesting biology of Augochlora (Augochlora) amphitrite (Schrottky) in a natural reserve in the Province of Buenos Aires, Argentina, is described. The species nests in decaying wood. Two types of nest architecture were found, which differed according to the substrate where they were built, either soft or hard wood. Nests in soft wood had the cells grouped in clusters surrounded by a cavity, and the clusters were supported by a varying number of pillars. Nests constructed in decomposing portions of cracks in otherwise hard wood had the cells constructed against the walls, without any pillars or surrounding cavity. Cells of both types of nests were oriented in all directions, without any detectable pattern. Measurements and characteristics of the nests are tabulated and compared to those known for other species of Augochlora s. str. Behavioral observations of active nests are indicative of a social division of tasks in A. amphitrite. Such observations include nests with several females, some of which were never observed outside the nests, females with different degrees of wear and of ovary development, and at least one female that actively collected pollen which had much worn mandibles and wings, and undeveloped ovaries, all characteristics of the worker caste in social halictids.
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spelling doaj.art-16470c1214114a86b6bae606e42298662022-12-22T02:25:47ZengPensoft PublishersJournal of Hymenoptera Research1070-94281314-26072012-05-01260172910.3897/jhr.26.24401597Nest structure and notes on the social behavior of Augochlora amphitrite (Schrottky) (Hymenoptera, Halictidae)Milagros DalmazzoArturo Roig AlsinaThe nesting biology of Augochlora (Augochlora) amphitrite (Schrottky) in a natural reserve in the Province of Buenos Aires, Argentina, is described. The species nests in decaying wood. Two types of nest architecture were found, which differed according to the substrate where they were built, either soft or hard wood. Nests in soft wood had the cells grouped in clusters surrounded by a cavity, and the clusters were supported by a varying number of pillars. Nests constructed in decomposing portions of cracks in otherwise hard wood had the cells constructed against the walls, without any pillars or surrounding cavity. Cells of both types of nests were oriented in all directions, without any detectable pattern. Measurements and characteristics of the nests are tabulated and compared to those known for other species of Augochlora s. str. Behavioral observations of active nests are indicative of a social division of tasks in A. amphitrite. Such observations include nests with several females, some of which were never observed outside the nests, females with different degrees of wear and of ovary development, and at least one female that actively collected pollen which had much worn mandibles and wings, and undeveloped ovaries, all characteristics of the worker caste in social halictids.http://jhr.pensoft.net/lib/ajax_srv/article_elements_srv.php?action=download_pdf&item_id=1597
spellingShingle Milagros Dalmazzo
Arturo Roig Alsina
Nest structure and notes on the social behavior of Augochlora amphitrite (Schrottky) (Hymenoptera, Halictidae)
Journal of Hymenoptera Research
title Nest structure and notes on the social behavior of Augochlora amphitrite (Schrottky) (Hymenoptera, Halictidae)
title_full Nest structure and notes on the social behavior of Augochlora amphitrite (Schrottky) (Hymenoptera, Halictidae)
title_fullStr Nest structure and notes on the social behavior of Augochlora amphitrite (Schrottky) (Hymenoptera, Halictidae)
title_full_unstemmed Nest structure and notes on the social behavior of Augochlora amphitrite (Schrottky) (Hymenoptera, Halictidae)
title_short Nest structure and notes on the social behavior of Augochlora amphitrite (Schrottky) (Hymenoptera, Halictidae)
title_sort nest structure and notes on the social behavior of augochlora amphitrite schrottky hymenoptera halictidae
url http://jhr.pensoft.net/lib/ajax_srv/article_elements_srv.php?action=download_pdf&item_id=1597
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