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Donghui Wu - One of the best experts on this subject based on the ideXlab platform.
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Figures 8 – 13 In Description Of The Octopunctata - Group Species Of Protaphorura From China (Collembola: Onychiuridae)
2020Co-Authors: Donghui WuAbstract:FIGURES 8 – 13. Protaphorura jiamusiensis sp. nov.: 8, ventral side of head; 9, chaetotaxy of central part of Abd. IV sternum; 10, chaetotaxy of Th. I tergum; 11, Abd. IV – VI terga; 12, anal valves; 13, distal part of leg III. Scales: 0.1 mm (8, 9, 11), 0.01 mm (10, 12, 13).
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delimiting species of protaphorura collembola Onychiuridae integrative evidence based on morphology dna sequences and geography
Scientific Reports, 2017Co-Authors: Donghui Wu, Yu Li, Feng Zhang, Yinhuan Ding, Thomas W DaviesAbstract:Species delimitation remains a significant challenge when the diagnostic morphological characters are limited. Integrative taxonomy was applied to the genus Protaphorura (Collembola: Onychiuridae), which is one of most difficult soil animals to distinguish taxonomically. Three delimitation approaches (morphology, molecular markers and geography) were applied providing rigorous species validation criteria with an acceptably low error rate. Multiple molecular approaches, including distance- and evolutionary model-based methods, were used to determine species boundaries based on 144 standard barcode sequences. Twenty-two molecular putative species were consistently recovered across molecular and geographical analyses. Geographic criteria were was proved to be an efficient delimitation method for onychiurids. Further morphological examination, based on the combination of the number of pseudocelli, parapseudocelli and ventral mesothoracic chaetae, confirmed 18 taxa of 22 molecular units, with six of them described as new species. These characters were found to be of high taxonomical value. This study highlights the potential benefits of integrative taxonomy, particularly simultaneous use of molecular/geographical tools, as a powerful way of ascertaining the true diversity of the Onychiuridae. Our study also highlights that discovering new morphological characters remains central to achieving a full understanding of collembolan taxonomy.
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new species and new records of protaphorura species from northeast china collembola Onychiuridae
Zootaxa, 2015Co-Authors: Liang Chang, Donghui WuAbstract:A new species, Protaphorura genheensis sp. nov., and two new records, Protaphorura taimyrica (Martynova, 1976) and Protaphorura kaszabi (Dunger, 1978) are reported from northeast China. New localities for P. bicampata are presented. P. genheensis sp. nov. belongs to the ‘oligopseudocellar’ group as having fewer pso on Th. II–III and can be distinguished by the dorsal pso formula, number of pso on the subcoxa 1 of legs, ventral psx formula and the number of chaetae on Th. I–III sterna. P. taimyrica is described basing on the Chinese specimens, and the individuals who have the dorsal pso formula as 33/012/33342 are found.
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new species of sensillonychiurus collembola Onychiuridae onychiurinae in heilongjiang province china
Florida Entomologist, 2014Co-Authors: Donghui WuAbstract:Two new species, Sensillonychiurus pseudogeminus sp. nov. and Sensillonychiurus zhuajiensis sp. nov., are reported from Heilongjiang Province, China. S. pseudogeminus sp. nov. is very similar to the S. geminus Pomorski & Sveenkova 2006, but it can recognized by shorter unguiculus, longer anal spines and presence of sternal parapseudocelli on Abd. II and Abd. IV instead of pseudocelli. Sensillonychiurus zhuajiensis sp. nov. can easily be distinguished from other known congeners by its peculiar dorsal pso formula (32/144/44453).
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onychiurid species from wanda mountains in china with descriptions of two new species collembola Onychiuridae
ZooKeys, 2014Co-Authors: Donghui WuAbstract:A checklist of onychiurid species from the Wanda Mountains in China is presented. Eighteen species belonging to twelve genera have been found, including two new species. Bionychiurus qinglongensis sp. n. can be easily distinguished from other known species of the genus by the absence of pseudocelli on Th. I tergum and fewer number of vesicles in postantennal organ. Onychiurus heilongjiangensis sp. n. is diagnosed by pseudocellar formulae as 32/133/33352 dorsally and 3/011/31120 ventrally, parapseudocellar formula as 0/000/111001+1m, ratio of anal spine/unguis as 0.6, unguiculus without inner basal lamella, and male ventral organ absent.
Romuald J Pomorski - One of the best experts on this subject based on the ideXlab platform.
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structure and function of the male ventral organ in onychiuroides granulosus collembola Onychiuridae
European Journal of Endocrinology, 2018Co-Authors: Bozena Simiczyjew, Romuald J Pomorski, Adrian Smolis, Dariusz Skarżyński, Marta MazurkiewiczkaniaAbstract:On the ventral tube of males of Onychiuroides granulosus (Stach, 1934) there is a male ventral organ, which consists of two groups of four setae that are thickened, slightly flattened and bent. All setae of the male ventral organ are inserted in a richly sculptured cuticle. At the base of each seta there are a few large cells (basal cells) that have large irregular nuclei that contain a large amount of heterochromatin. In the cytoplasm of the basal cells there are numerous mitochondria, ribosomes and a rich system of endoplasmic reticulum. The plasma membrane of the basal cells forms richly folded, deep invaginations, filled with a dense material, which also occurs in particular setae and on their surface. The present study indicates that the male ventral organ is secretory and does not confirm its previously suggested sensory function.
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revision of the genus spinonychiurus weiner 1996 collembola Onychiuridae with description of five new species
Zootaxa, 2015Co-Authors: Romuald J Pomorski, Igor J KapruśAbstract:The genus Spinonychiurus Weiner, 1996 is revised. This genus is assigned to the tribe Thalassaphorurini because of the structure of reduced furca––a small depression in the center of abdominal sternum IV, with 2+2 small posterior chaetae arranged in two rows. Spinonychiurus clearly differs from other members of the tribe by the division of abdominal sternum III on two subsegments, each with an own set of chaetae. Five new species, S. issykkulensis sp. nov., S. nazguli sp. nov., S. natashae sp. nov., S. alaskensis sp. nov. and S. alabelensis sp. nov. are described. Five previously known species, S. edinensis (Bagnall, 1935), S. spinularius (Gisin, 1952) comb. nov., S. subedinensis (Arbea & Jordana, 1985) comb. nov., S. tianshanicus (Martynova, 1971) comb. nov. and S. pamirensis (Martynova, 1975) comb. nov., are assigned to this genus and redescribed on the basis of the type material and new specimens. An identification key to all known Spinonychiurus species is provided.
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redescription of onychiurus rectospinatus collembola Onychiuridae
European Journal of Entomology, 2013Co-Authors: Romuald J PomorskiAbstract:Onychiurus rectospinatus Stach, 1922 is redescribed. O. arvensis Rusek, 1979 is a junior synonym of O. rectospinatus. Morphological differences between O. rectospinatus and O. circulans Gisin, 1952 are given.
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jacekaphorura gen nov a new genus of protaphorurini collembola Onychiuridae from mountainous yakutia east siberia
Zootaxa, 2010Co-Authors: Romuald J Pomorski, Anatoly BabenkoAbstract:The Siberian fauna of Onychiuridae seems to be rather diverse and only slightly touched by taxonomic works (Martynova 1976; Fjellberg 1987; Pomorski 2001). The vast territory of Yakutia (Sakha Republic) is not an exception. Thus, only 3 of 13 Onychiuridae species collected in 2002 by O. Makarova in upper current of Kyubyume River in the eastern mountainous part of Yakutia could be identified more or less correctly during a primary sorting of material. Up to now some of the others were described by Pomorski & Kaprus’ (2007) and Babenko (2009). Here we present a description of a new species from the same region which can not be placed in any existing genus.
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Jacekaphorura gen. nov. –– a new genus of Protaphorurini (Collembola: Onychiuridae) from mountainous Yakutia, East Siberia
Zootaxa, 2010Co-Authors: Romuald J Pomorski, Anatoly BabenkoAbstract:The Siberian fauna of Onychiuridae seems to be rather diverse and only slightly touched by taxonomic works (Martynova 1976; Fjellberg 1987; Pomorski 2001). The vast territory of Yakutia (Sakha Republic) is not an exception. Thus, only 3 of 13 Onychiuridae species collected in 2002 by O. Makarova in upper current of Kyubyume River in the eastern mountainous part of Yakutia could be identified more or less correctly during a primary sorting of material. Up to now some of the others were described by Pomorski & Kaprus’ (2007) and Babenko (2009). Here we present a description of a new species from the same region which can not be placed in any existing genus.
Louis Deharveng - One of the best experts on this subject based on the ideXlab platform.
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unusually low genetic divergence at coi barcode locus between two species of intertidal thalassaphorura collembola Onychiuridae
PeerJ, 2018Co-Authors: Anne Bedos, Louis DeharvengAbstract:: Species classification is challenging when taxa display limited morphological differences. In this paper, we combined morphology and DNA barcode data to investigate the complicated taxonomy of two Onychiurid Collembolan species. Thalassaphorura thalassophila and Thalassaphorura debilis are among the most common arthropod species in intertidal ecosystems and are often considered to be synonymous. Based on morphological and barcode analyses of fresh material collected in their type localities, we redescribed and compared the two species. However, their morphological distinctiveness was supported by a molecular divergence much smaller than previously reported at the interspecific level among Collembola. This divergence was even smaller than inter-population divergences recognized in the related edaphic species T. zschokkei, as well as those known between MOTUs within many Collembolan species. Our results may indicate a link between low genetic interspecific divergence and intertidal habitat, as the only biological peculiarity of the two species of interest compared to other Collembolan species analyzed to date is their strict intertidal life.
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broadening the definition of the genus thalassaphorura bagnall 1949 collembola Onychiuridae with a new aberrant species from china
ZooKeys, 2013Co-Authors: Louis Deharveng, Donghui WuAbstract:A new species belonging to the tribe Thalassaphorurini, Thalassaphorura problematica sp. n., is described from Northeast China. The new species is closest to the large genus Thalassaphorura by its simple vesicles in PAO and its furcal rudiment, but it does not fit the definition of the genus by the absence of chaeta d0 on head, the number of chaetae in the distal whorl of tibiotarsi and the labium type. We discuss the relative weakness of these last characters at generic level, which lead us to assign the new species to Thalassaphorura instead of erecting a new genus. The diagnosis of Thalassaphorura is broadened accordingly.
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redefinition of the genus allonychiurus yoshii 1995 collembola Onychiuridae with description of a new species from china
ZooKeys, 2011Co-Authors: Jianxiu Chen, Louis DeharvengAbstract:In this paper, we describe a new species of the genus Allonychiurus Yoshii, 1995, characterized by the presence of an apical swelling on the fourth antennal segment as well as a combination of chaetotaxic and pseudocellar characters. The genus Allonychiurus is redefined. Four of its species are considered as incertae sedis: Allonychiurus michelbacheri (Bagnall, 1948), Allonychiurus spinosus (Bagnall, 1949), Allonychiurus caprariae (Dallai, 1969) and Allonychiurus sensitivus (Handschin, 1928). The three species Allonychiurus borensis (Beruete, Arbea & Jordana, 1994), Allonychiurus sensilatus (Thibaud & Massoud, 1979) and Allonychiurus vandeli (Cassagnau, 1960) are removed from Allonychiurus and placed in Micronychiurus Bagnall, 1949, Thalassaphorura Bagnall, 1949 and Spinonychiurus Weiner, 1996 respectively. The synonymy of Thibaudichiurus Weiner, 1996 with Allonychiurus is rejected and Allonychiurus foliatus (Rusek, 1967) and Allonychiurus mariangeae (Thibaud & Lee, 1994) are re-allocated to Thibaudichiurus. List and identification key to the world species of the genus are given.
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sex pheromone in tetrodontophora bielanesis waga 1842 collembola Onychiuridae indirect reproduction mediated by cuticular compounds
Pedobiologia, 2009Co-Authors: David Porco, Louis Deharveng, Dariusz SkarzynskiAbstract:Summary An olfactory sexual recognition signal was investigated in Tetrodontophora bielanensis (Collembola: Onychiuridae). A preliminary olfactometry experiment showed an unequivocal attraction of males by the odor of females. This led us to conduct male attraction tests using polar and apolar fractions of female cuticular extract. The polar fraction of the extract was shown to contain the component that plays an active role in sexual attraction in this Collembola species. The results of the present study are the first to show a direct relationship between an olfactory signal and sexual attraction in Collembola.
Anatoly Babenko - One of the best experts on this subject based on the ideXlab platform.
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subdivision of the tribe oligaphorurini in the light of new and lesser known species from north east russia collembola Onychiuridae onychiurinae
ZooKeys, 2015Co-Authors: Anatoly Babenko, Arne FjellbergAbstract:The paper is devoted to a taxonomic review of Oligaphorurini from the north-eastern part of Palaearctic. Two new species, i.e. Oligaphorura ambigua sp. n. and Oligaphorura duocellata sp. n., are described. Four species, Oligaphorura nataliae (Fjellberg, 1987), Oligaphorura interrupta (Fjellberg, 1987), Oligaphorura pingicola (Fjellberg, 1987), and Micraphorura alnus (Fjellberg, 1987), are redescribed on base of the types and new material, and remarks on other species known for the region, Oligaphorura groenlandica (Tullberg, 1876), Oligaphorura ursi (Fjellberg, 1984), Oligaphorura aborigensis (Fjellberg, 1987), and Micraphorura absoloni (Borner, 1901), are given to clarify their generic affiliation. Finally, merits and disadvantages of the current subdivision of the tribe are discussed and a key to the northern species of the tribe is provided.
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new species of the genus jacekaphorura collembola Onychiuridae from upper reaches of kolyma river north east of russia
Zootaxa, 2013Co-Authors: Anatoly BabenkoAbstract:Two new species of the genus Jacekaphorura from the North-East of Russia, viz. J. catherinae sp. nov. and J. furcata sp. nov., were described and illustrated. The former species clearly differs from the only previously known species of the genus by a high and variable number of dorsal pso, the latter can easily be distinguished due to specific structure of furcal remnant. The generic diagnosis and position within modern tribal subdivision of the Onychiurinae are discussed.
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new palaearctic species of the tribe thalassaphorurini pomorski 1998 collembola Onychiuridae
ZooKeys, 2011Co-Authors: Anatoly Babenko, Ayuna B Chimitova, Sophya StebaevaAbstract:The paper is devoted to a taxonomic revision of the genus Sensillonychiurus Pomorski & Sveenkova, 2006. Five new species of this genus, i.e. Sensillonychiurus mirus sp. n., Sensillonychiurus taimyrensis sp. n., Sensillonychiurus vegae sp. n., Sensillonychiurus vitimicus sp. n., and Sensillonychiurus amuricus sp. n., as well as three new species of the related genus Allonychiurus Yoshii, 1995, i.e. Allonychiurus subvolinensis sp. n., Allonychiurus elikonius sp. n., and Allonychiurus unisetosus sp. n. are being described from various regions of Eurasia. The diagnoses of both genera are amended to include described species. Two genera, Tantulonychiurus Pomorski, 1996 and Thibaudichiurus Weiner, 1996, are treated as junior synonyms of the genus Allonychiurus. Agraphorura eisi (Rusek, 1976) is transferred to Sensillonychiurus; Tantulonychiurus volinensis (Szeptycki, 1964) and Tantulonychiurus asiaticus Babenko, 2007 to Allonychiurus. A review of morphological peculiarities of Sensillonychiurus is performed, comparisons with the other genera of Thalassaphorurini given, and a key to the known species provided.
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jacekaphorura gen nov a new genus of protaphorurini collembola Onychiuridae from mountainous yakutia east siberia
Zootaxa, 2010Co-Authors: Romuald J Pomorski, Anatoly BabenkoAbstract:The Siberian fauna of Onychiuridae seems to be rather diverse and only slightly touched by taxonomic works (Martynova 1976; Fjellberg 1987; Pomorski 2001). The vast territory of Yakutia (Sakha Republic) is not an exception. Thus, only 3 of 13 Onychiuridae species collected in 2002 by O. Makarova in upper current of Kyubyume River in the eastern mountainous part of Yakutia could be identified more or less correctly during a primary sorting of material. Up to now some of the others were described by Pomorski & Kaprus’ (2007) and Babenko (2009). Here we present a description of a new species from the same region which can not be placed in any existing genus.
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Jacekaphorura gen. nov. –– a new genus of Protaphorurini (Collembola: Onychiuridae) from mountainous Yakutia, East Siberia
Zootaxa, 2010Co-Authors: Romuald J Pomorski, Anatoly BabenkoAbstract:The Siberian fauna of Onychiuridae seems to be rather diverse and only slightly touched by taxonomic works (Martynova 1976; Fjellberg 1987; Pomorski 2001). The vast territory of Yakutia (Sakha Republic) is not an exception. Thus, only 3 of 13 Onychiuridae species collected in 2002 by O. Makarova in upper current of Kyubyume River in the eastern mountainous part of Yakutia could be identified more or less correctly during a primary sorting of material. Up to now some of the others were described by Pomorski & Kaprus’ (2007) and Babenko (2009). Here we present a description of a new species from the same region which can not be placed in any existing genus.
Wanda Maria Weiner - One of the best experts on this subject based on the ideXlab platform.
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A New Species of Hymenaphorura (Bagnall, 1948) (Collembola: Onychiuridae) from Japan, with an Identification Key to the Genus
Annales Zoologici, 2018Co-Authors: Grzegorz Cieślak, Wanda Maria WeinerAbstract:Abstract. A new species Hymenaphorura yoshii sp. nov. from Myoujindo Cave in Japan is described and illustrated. The new species is the most similar to H. mystica Pomorski, 2001 and H. palaearctica Pomorski, 2001 but can be distinguished from former species by the build of postantennal organ, the clearly differentiated into macro- and microsetae chaetotaxy and the large and curved anal spines while the H. palaearctica differs from the new species by the absence of pseudocellus on thoracic tergum I, the presence of 4 macrosetae on abdominal tergum V and 2 lateral teeth on claw. The key to the world species of Hymenaphorura is also provided.
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oligaphorura judithnajtae n sp from japan collembola Onychiuridae
Zoosystema, 2017Co-Authors: Wanda Maria Weiner, Grzegorz CieślakAbstract:ABSTRACT A new species Oligaphorura judithnajtae n. sp., from Shigawatari Do Cave, Akka Iwaizumi, Japan is described and illustrated. The new species is exceptional by the presence of ventral pseudocelli on abdominal segments I–IV, the large size of s-microchaetae (ms) on antennae and thoracic terga II and III, by the long, thin body macrochaetae and by the build of furcal remnant. Oligaphorura judithnajtae n. sp. seems to be most similar to O. duocellata Babenko & Fjellberg, 2015 but can be distinguished from that species as the first thoracic segment has one pso (two pso in duocellata), the presence of one pso on each subcoxae (2,2,3 pso in duocellata) and by the PAO with one four-lobed vesicle (three-lobed in duocellata).
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collembola of the genus protaphorura absolon 1901 Onychiuridae in the eastern palearctic morphology distribution identification key
ZooKeys, 2016Co-Authors: Igor J Kaprus, Wanda Maria Weiner, Grzegorz CieślakAbstract:: Seven new species, Protaphorura jernikasp. n., Protaphorura absconditasp. n., Protaphorura tuvinicasp. n., Protaphorura vasilinaesp. n., Protaphorura sayanicasp. n., Protaphorura oligopseudocellatasp. n. and Protaphorura nikolaisp. n. from different habitats of the southern Siberia and Far East of Russia, are described. Protaphorura ombrophila (Stach, 1960) is redescribed based on the type specimens. These species differ one from other and from all known species by dorsal and ventral pseudocellar formulae, number of pseudocelli on subcoxae 1 of legs I-III, parapseudocellar formula, chaetotaxy of body, structure of claw, size of postantennal organ and body length. Geographical distribution of all known Protaphorura species of Eastern Palearctic was analysed and an identification key to 50 species was provided.
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revision of palearctic species of the genus dimorphaphorura collembola Onychiuridae onychiurinae oligaphorurini with description of new species
Journal of Insect Science, 2014Co-Authors: Wanda Maria Weiner, Igor J KaprusAbstract:Abstract In this paper, the Palearctic genus Dimorphaphorura Bagnall, 1949 (Collembola: Onychiuridae), is revised. The diagnosis of the genus is defined within the tribe Oligaphorurini based on the development of the furcal area, shape of furcal rudiment, and furcal chaetotaxy. Six new species are described: D. olenae sp. n. from Ukraine, D. inya sp. n., D. pseudoinya sp. n. , D. sibirica sp. n. , D. caucasica sp. n., and D. sophyae sp. n. from Russia. The type species of the genus, D. differens Bagnall, 1949 is redescribed, and the lectotype and paralectotypes are designated. All previously known species are redescribed or with additional characters complemented: D. alnus (Fjellberg, 1987) comb. n., D. chatyrdagi (Kaprus',Weiner & Pomorski, 2002) comb. n., D. daii (Pomorski, Skarzynski & Kaprus', 1998) comb. n., Dimorphaphorura eremia (Kaprus',Weiner & Pomorski, 2002) comb. n., D. hackeri (Christian, 1986) comb. n., D. irinae (Thibaud & Taraschuk, 1997) comb. n. , D. melittae (Christian, 1993) comb. n., ...
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New species of Deuteraphorura (Collembola: Onychiuridae) from Romania.
Florida Entomologist, 2014Co-Authors: Wanda Maria Weiner, Cristina FieraAbstract:Abstract The description of two new species of the genus Deuteraphorura Absolon, 1901 from Doftana Valley, Romania is given. Deuteraphorura dianae sp. nov. has the pseudocellar formula dorsally: 32/033/33353 and ventrally: 3/011/3112. Deuteraphorura doftana sp. nov. is characterized by its dorsal (33/033/33354) and ventral (3/011/3212) pseudocellar formulae. A proposed key to the all species of Deuteraphorura from the world without pseudocelli on the thoracic tergum I is also presented.
