The abundance of insects in Burmese amber illustrates a highly diverse orthoptera community of the mid-Cretaceous, but the records of ripipterygids are relatively rare. Here, we reviewed the genus of Magnidactylus (Xu, Fang and Jarzembowski, 2020) and transfered it from Tridactylidae to Ripipterygidae. Based on four ambers specimens collected from northern Myanmar, two new species, Magnidactylusmirus sp. nov. and Magnidactylusgracilis sp. nov., wereerected. M.mirus sp. nov. can be characterized by its basal segment and apical segment of paraproctal lobes, which are equally thick and clavate. M.gracilis sp. nov. can be characterized by its apical segment of paraproctal lobes, which are distinctly swollen. Additionally, in order to facilitate the classification of amber specimens of Tridactyloidea, a key to the genera ofambers in this superfamily is provided.

The abundance of insects in Burmese amber illustrates a highly diverse insect community of the mid-Cretaceous, but the records of crickets are relatively rare. Here, we erect two new genera with two new species, Birmanioecanthus haplostichus gen. et sp. nov. and Apiculatus cretaceus gen. et sp. nov., based on two new specimens from northern Myanmar amber. These new species can be assigned to the subfamily Oecanthinae (Orthoptera: Gryllidae) by their prognathous head, slender body and metatibiae, and protibiae with large tympana. These new findings are the first and earliest fossil record of tree crickets and shed light on the evolution of Oecanithinae.

This paper describes a new genus with a new species from Burmese amber, namely: Latedactylus longapedi gen. et sp. nov. (Tridactylidae: Tridactylinae). L. longapedi gen. et sp. nov. is erected based on the cylindrical second segment of cercus longer and distinctly slender than the first; metatibia without swimming plates; metatarsus about three times as long as apical spurs of metatibia.

Four new species of Sichuana Shen & Yin, 2020 are described based on morphological comparison and molecular analysis: S. planicercatasp. nov., S. curvicercatasp. nov., S. longilaminasp. nov. and S. magnicercasp. nov. Specimens showed some intraspecific variation of male tegmina and subgenital plates. The genes COI and 16S were used to analyze the genetic distance between species and COI was used to analyze the phylogenetic relationship of Sichuana.