Four new species of three genera in the family Cimbrophlebiidae, Telobittacus decorus sp.nov., Bellicimbrophlebia heteroneura sp.nov., Cimbrophlebia amoena sp.nov., and Cimbrophlebia gracilenta sp.nov., are described and illustrated based on eleven well-preserved fossil specimens.These specimens were collected from the latest Middle Jurassic Jiulongshan Formation of Daohugou, Inner Mongolia, China.This is the first record of the genus Cimbrophlebia in the Jurassic extending its age from the Lower Cretaceous to the Middle Jurassic.Due to same venational characters, we propose that an undescribed fossil specimen of Cimbrophlebiidae from the Jurassic of Germany is attributed to C.gracilenta sp.nov.Our new findings demonstrate an evolutionary trend of venational change from 185 to 50 Ma that the level of the bifurcation of Rs is gradually moving toward the base of wing in reference to the bifurcation of M.
Objective This work is designed to improve the quality,visual effect and production efficiency of ecological reconstruction of fossil insects by using various threedimensional software and exploring helpful
Objective Symphyta,as an ancestral and paraphyletic group,are mainly phytophagous lineages.In order to truly elucidate their natural history and the development trends,we need to cover more species,including the extinct and extant species.In general,fossils sometimes appear to be necessary since extinct species usually have the so-called transitional states,which play important roles in their early evolution.It is well known that the Early
WANG MeiGAO TaipingSHIH ChungkunRASNITSYN P AlexanderREN Dong
A new fossil species, Anthoscytina macula sp. nov., of the family Procercopidae is described from the Early Cretaceous Yixian Formation in Huangbanjigou, Chaomidian Village, Beipiao City, Liaoning Province, China. A key to the species of the genus Anthoscytina Hong, 1983 is provided. The diagnosis of the genus is revised.
One new genus with a new fossil species,Declinimodus setulosus gen.et sp.nov.which was found in the Middle Jurassic Jiulongshan Formation of Daohugou,Inner Mongolia,China,are described and illustrated.The new species is assigned to the Rhyacophilidae according to buttonshaped of the 2nd segment of maxillary palp,and the forked R1(in the forewing,located near apex).These new discovery are the earliest fossil records of Rhyacophilidae,which providing important evident for the study of the origin and early evolution of Trichoptera.
Two new genera with two new species of sawflies,Cathayxyela extensa gen.et sp.nov.and Aequixyela immensa gen.et sp.nov.,from the Middle Jurassic Jiulongshan Formation of southeastern Inner Mongolia,China,are assigned to the subfamily Xyelinae(Hymenoptera,Xyelidae).Cathayxyela gen.nov.can be distinguished by the third antennal article longer than the head; mesoprescutum and mesoscutellum nearly equal in length; the forewing with Sc meeting C before the junction of 1-M and 1-Rs; a weak and narrow pterostigma; and 3-Cu at least 1.5 times longer than the 1m-cu.Aequixyela gen.nov.is characterized by the third antennal article nearly as long as the head; the forewing with Rs+M approximately equal to 2-Rs in length; 2m-cu inclined toward the wing base and nearly reaching the middle of cell 3rm; 1m-cu as long as the 2-Cu and 3-Cu; and the cell 2cua of regular hexagonal shape.
A new species, Cimbrophlebia rara sp. nov., in the family Cimbrophlebiidae(Mecoptera) is described and illustrated. This specimen was collected from the Early Cretaceous Yixian Formation at Liutiaogou in Inner Mongolia, China. This is the first record of a cimbrophlebiid from the Jehol biota. A key to all species of Cimbrophlebia is given. A preliminary review of published taxa data indicates that from the Middle Jurassic to the Early Cretaceous, Mecoptera became less diverse and less abundant in northeastern China at familiar level(from 11 to 6), generic level(from 32 to 8) and specific level(from 44 to 14).
Two new species, Cretolimonia excelsa sp. nov. and Mesotipula gloriosa sp. nov., in Limoniidae of Diptera are described and illustrated, based on three fossil specimens with bodies and complete wings. These specimens were collected from the latest Middle Jurassic Jiulongshan Formation at Daohugou, Inner Mongolia, China. These are the first fossil records of these two genera from China.
