Juraperla grandis sp. nov. （Grylloblattida： Juraperlidae） is described from the Daohugou locality （Middle Jurassic, China）. Its wing venation is very similar to that ofJuraperla daohugouensis Huang and Nd, 2007 ...Juraperla grandis sp. nov. （Grylloblattida： Juraperlidae） is described from the Daohugou locality （Middle Jurassic, China）. Its wing venation is very similar to that ofJuraperla daohugouensis Huang and Nd, 2007 （Grylloblattida： Juraperlidae）, in the particular occurrence of a supplementary longitudinal vein in the area between the anterior wing margin and ScP. The larger size of the new specimen, the lower number of CuA1 branches, and the occurrence of two rows of cells between MP and CuA in forewings justify the erection of a new species, J. grandis sp. nov.. The material also preserved hind wing and body structures, described for the first time in Juraperlidae.展开更多
A new specimen assigned to the species Iverya averyi gen. nov. and sp. nov. is described. This species is considered as a triadotypomorphan insect, a poorly known group of Triassic stem-odonatans. Like other triadotyp...A new specimen assigned to the species Iverya averyi gen. nov. and sp. nov. is described. This species is considered as a triadotypomorphan insect, a poorly known group of Triassic stem-odonatans. Like other triadotypomorphans, this species exhibits an area between MA and MP that is comparatively broad, and a cubitoanal area involving an AA stem distinct from CuA ＋ CuP ＋ AA emitting several posterior branches. Diagnostic character states of the new species are listed. Although incomplete, the specimen provides new information on the wing morphology of triadotypomorphans. This discovery might contribute to better assessment of the phylogenetic position of triadotypomorphan species with respect to other stem-odonatans.展开更多
基金supported by the National Natural Science Foundation of China(No.40872022)Nature Science Foundation of Beijing (No.5082002)+1 种基金the Scientific Research Key Program (KZ200910028005)PHR Project of Beijing Municipal Commission of Education
文摘Juraperla grandis sp. nov. （Grylloblattida： Juraperlidae） is described from the Daohugou locality （Middle Jurassic, China）. Its wing venation is very similar to that ofJuraperla daohugouensis Huang and Nd, 2007 （Grylloblattida： Juraperlidae）, in the particular occurrence of a supplementary longitudinal vein in the area between the anterior wing margin and ScP. The larger size of the new specimen, the lower number of CuA1 branches, and the occurrence of two rows of cells between MP and CuA in forewings justify the erection of a new species, J. grandis sp. nov.. The material also preserved hind wing and body structures, described for the first time in Juraperlidae.
文摘A new specimen assigned to the species Iverya averyi gen. nov. and sp. nov. is described. This species is considered as a triadotypomorphan insect, a poorly known group of Triassic stem-odonatans. Like other triadotypomorphans, this species exhibits an area between MA and MP that is comparatively broad, and a cubitoanal area involving an AA stem distinct from CuA ＋ CuP ＋ AA emitting several posterior branches. Diagnostic character states of the new species are listed. Although incomplete, the specimen provides new information on the wing morphology of triadotypomorphans. This discovery might contribute to better assessment of the phylogenetic position of triadotypomorphan species with respect to other stem-odonatans.
