TY - JOUR JF - Acarologia T1 - Oldest determined record of a mesostigmatic mite (Acari: Mesostigmata: Sejidae) in Cretaceous Burmese amber VL - 61 IS - 3 SP - 641 EP - 649 PY - 2021 SN - 0044-586X SN - 2107-7207 PB - Les Amis d'Acarologia AU - Joharchi, Omid AU - Vorontsov, Dmitry D. AU - Walter, David Evans UR - https://doi.org/10.24349/goj5-BZms DO - 10.24349/goj5-BZms DA - 2021-09-14 ET - 2021-09-14 KW - fossil record; Myanmar; Sejida; Parasitiformes AB - This paper describes the first record of the Sejida (= Sejina) family Sejidae (superfamily Sejoidea) from Burmese amber, based on deutonymphs. Specimens were found in the amber piece along with a wasp (Hymenoptera: Scelionidae), flies (Diptera: Ceratopogonidae) and thrips (Thysanoptera: Adiheterothripidae). This record traces the Sejida (= Sejina) back to the mid-Cretaceous (ca. 100 Ma) and represents not only the oldest valid record of Mesostigmata, but it is also one of the oldest examples of the entire Parasitiformes clade. ER -