title: On the desmitracheate "micronetine" genus Nippononeta Eskov, 1992 (Araneae, Linyphiidae).
abstract: The desmitracheate system in a "micronetine" genus Nippononeta Eskov, 1992 is recognized for the first time in the present study. This makes the subfamilial placement of this genus problematic. A morphological study was conducted for Nippononetakurilensis Eskov, 1992 (the type species of Nippononeta) and Nippononetacoreana (Paik, 1991). Characters of genitalia and tracheal system, as well as some somatic characters were studied in detail by using scanning electronic microscopy (SEM), and compared with those of Agyneta. Updated descriptions of the genus Nippononeta and its two species are presented. Putative synapomorphies for Nippononeta and Agyneta are provided, as well as some putative synapomorphies shared by the two genera. The results imply that both scaped epigynum and desmitracheate tracheal system are probably homoplastic. The placement of Nippononeta and Agyneta within Linyphiidae need to be resolved in future studies.
authors.affiliation: College of Life Sciences, Capital Normal University, Xisanhuanbeilu Str. 105, Haidian Dist. Beijing, 100048, P. R. China.
authors.forename: Ming
authors.initials: M
authors.lastname: Yan
authors.affiliation: College of Life Sciences, Capital Normal University, Xisanhuanbeilu Str. 105, Haidian Dist. Beijing, 100048, P. R. China.
authors.forename: Xiaokai
authors.initials: X
authors.lastname: Liang
authors.affiliation: College of Life Sciences, Capital Normal University, Xisanhuanbeilu Str. 105, Haidian Dist. Beijing, 100048, P. R. China.
authors.forename: Lihong
authors.initials: L
authors.lastname: Tu
keywords: Taxonomy; desmitracheate; genital morphology; scaped epigynum; “micronetine”
references.citation: Zootaxa. 2013;3674:1-189
references.pmid: 26146700
references.citation: Cladistics. 2004 Oct;20(5):385-442
references.pmid: 34892954
references.citation: Genetica. 2010 Jan;138(1):59-73
references.pmid: 19449163
references.citation: Cladistics. 2009 Jun;25(3):231-262
references.pmid: 34879614
references.citation: Zookeys. 2014 Jan 30;(375):75-99
references.pmid: 24526845