Taxonomy of the Proisotoma complex. VI. Rediscovery of the genus Bagnallella Salmon, 1951 and epitoky in Bagnallella davidi (Barra, 2001), comb. nov. from South Africa

The genus Bagnallella Salmon is restored and given a diagnosis. It takes an intermediate position between Proisotoma Börner and Cryptopygus Willem complexes and is characterized by the separation of the two last abdominal segments (like in Proisotoma) and 3 and 5 s-chaetae on the fourth and fifth ab...

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Autores principales:	Mikhail Potapov, Louis Deharveng, Charlene Janion-Scheepers
Formato:	article
Lenguaje:	EN
Publicado:	Pensoft Publishers 2021
Materias:	Zoology QL1-991
Acceso en línea:	https://doaj.org/article/0f8e07acd8c944639a17cd5bf3743dcb
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spelling	oai:doaj.org-article:0f8e07acd8c944639a17cd5bf3743dcb2021-11-25T04:30:11ZTaxonomy of the Proisotoma complex. VI. Rediscovery of the genus Bagnallella Salmon, 1951 and epitoky in Bagnallella davidi (Barra, 2001), comb. nov. from South Africa10.3897/zookeys.1072.713071313-2970https://doaj.org/article/0f8e07acd8c944639a17cd5bf3743dcb2021-11-01T00:00:00Zhttps://zookeys.pensoft.net/article/71307/download/pdf/https://zookeys.pensoft.net/article/71307/download/xml/https://zookeys.pensoft.net/article/71307/https://doaj.org/toc/1313-2970The genus Bagnallella Salmon is restored and given a diagnosis. It takes an intermediate position between Proisotoma Börner and Cryptopygus Willem complexes and is characterized by the separation of the two last abdominal segments (like in Proisotoma) and 3 and 5 s-chaetae on the fourth and fifth abdominal segments (like in Cryptopygus and its allies). A list of and key to species belonging to Bagnallella is given. Bagnallella biseta comb. nov., B. dubia comb. nov., B. sedecimoculata comb. nov., and B. tenella comb. nov. are commented and redescribed. Morphology of Bagnallella davidi (Barra), comb. nov. is described from the specimens from South Africa. So far B. davidi appears to be a complex of forms differing in size of the furca and macrochaetae. Two types of strongly modified males were found and described. Antennae, ventral side of abdomen, posterior edge of abdominal tergites, and mandibles are affected with epitoky. The nature of the discovered strong polymorphism is unclear.Mikhail PotapovLouis DeharvengCharlene Janion-ScheepersPensoft PublishersarticleZoologyQL1-991ENZooKeys, Vol 1072, Iss , Pp 185-204 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Zoology QL1-991
spellingShingle	Zoology QL1-991 Mikhail Potapov Louis Deharveng Charlene Janion-Scheepers Taxonomy of the Proisotoma complex. VI. Rediscovery of the genus Bagnallella Salmon, 1951 and epitoky in Bagnallella davidi (Barra, 2001), comb. nov. from South Africa
description	The genus Bagnallella Salmon is restored and given a diagnosis. It takes an intermediate position between Proisotoma Börner and Cryptopygus Willem complexes and is characterized by the separation of the two last abdominal segments (like in Proisotoma) and 3 and 5 s-chaetae on the fourth and fifth abdominal segments (like in Cryptopygus and its allies). A list of and key to species belonging to Bagnallella is given. Bagnallella biseta comb. nov., B. dubia comb. nov., B. sedecimoculata comb. nov., and B. tenella comb. nov. are commented and redescribed. Morphology of Bagnallella davidi (Barra), comb. nov. is described from the specimens from South Africa. So far B. davidi appears to be a complex of forms differing in size of the furca and macrochaetae. Two types of strongly modified males were found and described. Antennae, ventral side of abdomen, posterior edge of abdominal tergites, and mandibles are affected with epitoky. The nature of the discovered strong polymorphism is unclear.
format	article
author	Mikhail Potapov Louis Deharveng Charlene Janion-Scheepers
author_facet	Mikhail Potapov Louis Deharveng Charlene Janion-Scheepers
author_sort	Mikhail Potapov
title	Taxonomy of the Proisotoma complex. VI. Rediscovery of the genus Bagnallella Salmon, 1951 and epitoky in Bagnallella davidi (Barra, 2001), comb. nov. from South Africa
title_short	Taxonomy of the Proisotoma complex. VI. Rediscovery of the genus Bagnallella Salmon, 1951 and epitoky in Bagnallella davidi (Barra, 2001), comb. nov. from South Africa
title_full	Taxonomy of the Proisotoma complex. VI. Rediscovery of the genus Bagnallella Salmon, 1951 and epitoky in Bagnallella davidi (Barra, 2001), comb. nov. from South Africa
title_fullStr	Taxonomy of the Proisotoma complex. VI. Rediscovery of the genus Bagnallella Salmon, 1951 and epitoky in Bagnallella davidi (Barra, 2001), comb. nov. from South Africa
title_full_unstemmed	Taxonomy of the Proisotoma complex. VI. Rediscovery of the genus Bagnallella Salmon, 1951 and epitoky in Bagnallella davidi (Barra, 2001), comb. nov. from South Africa
title_sort	taxonomy of the proisotoma complex. vi. rediscovery of the genus bagnallella salmon, 1951 and epitoky in bagnallella davidi (barra, 2001), comb. nov. from south africa
publisher	Pensoft Publishers
publishDate	2021
url	https://doaj.org/article/0f8e07acd8c944639a17cd5bf3743dcb
work_keys_str_mv	AT mikhailpotapov taxonomyoftheproisotomacomplexvirediscoveryofthegenusbagnallellasalmon1951andepitokyinbagnallelladavidibarra2001combnovfromsouthafrica AT louisdeharveng taxonomyoftheproisotomacomplexvirediscoveryofthegenusbagnallellasalmon1951andepitokyinbagnallelladavidibarra2001combnovfromsouthafrica AT charlenejanionscheepers taxonomyoftheproisotomacomplexvirediscoveryofthegenusbagnallellasalmon1951andepitokyinbagnallelladavidibarra2001combnovfromsouthafrica
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Taxonomy of the Proisotoma complex. VI. Rediscovery of the genus Bagnallella Salmon, 1951 and epitoky in Bagnallella davidi (Barra, 2001), comb. nov. from South Africa

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