A new genus and a new species of Trigonidiidae (Orthoptera: Grylloidea) from north Myanmar amber

Abstract

We present the description of a new genus and new species of Trigonidiidae, Qiongqi crinalis gen. et sp. nov., found in amber deposits at Noije Bum, near Tanai in the Hukawng Valley of northern Myanmar. Its lateralized eyes, short clypeus, exposed mandible, and extremely dense setae entirely covering the body, provides us with new knowledge on the morphology of Trigonidiidae. Additionally, a key to species of fossil Trigonidiidae in amber was provided.

New Genera and Species of Trigonidiidae (Orthoptera: Grylloidea) from the Mid-Cretaceous of Myanmar with a Redescription of Birmaninemobius hirsutus

“…Up to now, fourteen fossil species of Trigonidiidae have been reported [ 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. Among them, the species from the Cretaceous discovered in Myanmar are peculiar, as they exhibit a unique combination of characteristics, cannot be assigned to any subfamily, and probably represent a stem group of Trigonidiidae [ 15 , 16 , 17 ]. Here, we report two new genera with three species of Trigonidiidae, Palaeotrigonidium concavoculus gen. et sp.…”

More than a name: Mid‐Cretaceous amber fossils link crickets and mole crickets (Orthoptera, Ensifera)

“…When compared with compression fossils that usually only preserve wings and frequently lack a complete body structure, fossils in the amber from northern Myanmar (Kachin) and France (Angoulême) are nearly complete and well‐preserved (Desutter‐Grandcolas et al, 2023; Poinar et al, 2020; Wang et al, 2018; Wang et al, 2022; Yang et al, 2022; Yuan et al, 2022; Zhao et al, 2020). To date, 11 gryllidean species have been reported from the Burmese amber (Gorochov, 2010; Jiang et al, 2022; Liu et al, 2022; Poinar et al, 2020; Wang et al, 2020; Xu et al, 2022; Xu, Fang, & Wang, 2020; Xu, Zhang, et al, 2020; Yuan et al, 2022; Yuan et al, 2023). Among them, three genera and four species were assigned to Gryllotalpoidea (i.e., † Tresdigitus rectanguli Xu, Fang & Wang, † Tresdigitus gracilis Jiang, Xu, Jarzembowski & Xiao, † Chunxiania fania Xu, Wang & Fang and † Burmagryllotalpa longa Wang et al).…”