Two new species of the genus Archaeopolycentra (Trichoptera: Polycentropodidae) from Cretaceous Taimyr amber

Abstract

Two new caddisfly species Archaeopolycentra turvalsia sp. n. and Archaeopolycentra achupomotet sp. n. (Polycentropodidae) from Late Cretaceous Taymyr amber (Santonian, Kheta Formation, 85 Ma) are described and illustrated. Totally, now the list of caddisflies from Taymyr amber includes 13 species, and the family Polycentropodidae is represented by five species.

Two Different Cretaceous Worlds: Taimyr and Kachin Amber Trichopterofaunas

“…Th irty-eight percent of the reported Taimyr species (Ivanov & Melnitsky, 2021) as well as at least 47 % of the reported specimens (Botosaneanu & Wichard, 1983;Ivanov & Melnitsky, 2017 belong to Polycentropodidae; in Yantardakh their share reaches 42 % of species and at least half of specimens; genus Archaeopolycentra Botosaneanu et Wichard, 1983 with fi ve species in Yantardakh comprises 42 % of all species and half of specimens and even 67 % of all species and 78 % of specimens in the new (2012) collection. Th ree Kachin polycentropodid species from three genera (Wichard, 2021) Wichard et al, 2018 (Cretapsychidae) by four species; these four genera constitute 60 % of all known Kachin trichopteran diversity.…”

“…Santonian Taimyr amber trichopterofauna with 11 species was "on the 1st place among all Cretaceous deposits counting also the rock imprints" (Ivanov & Melnitsky, 2017, p. 131) in 2017; three species and.species were added in 2021 and 2022 (Melnitsky & Ivanov, 2021, 2022. It put Taimyr trichopterofauna on the second place aft er fauna of burmite (earliest Cenomanian Kachin amber) with 45 species versus 7 species in 2017 (Ivanov & Melnitsky, 2017Wichard et al, 2022).…”

A new species of the genus Trematosphindus Li et Cai, 2021 (Coleoptera: Sphindidae) from Cenomanian Taimyr amber

“…Taimyr amber localities and their faunas were in the 21th century reviewed by Rasnitsyn et al (2016) and Perkovsky & Vasilenko (2019), with additions by Vršanský (2019), Telnov et al (2024) and Ogłaza et al (2024) based on the collections from different regions and formations of the Taimyr Peninsula, Azar & Maksoud (2020), Fedotova and Perkovsky (2020), Makarov & Perkovsky (2020), Colombo et al (2021), Melnitsky & Ivanov (2021, Giłka et al (2022), Ogłaza et al (2022a, b), Sukhomlyn & Perkovsky (2023) and Jenkins Shaw et al (2024) on Kheta Formation localities, Khaustov et al (2023) on Baikura, Kolibáč and Perkovsky (2020) on Zhdanikha, Hakim et al (2021) and Melnitsky & Ivanov (2022a) on Nizhnyaya Agapa. The Sphindidae is 47 th arthropod family reported from Nizhnyaya Agapa.…”

First carnivorous fungus from Santonian Taimyr amber

“…History and recent results in the Taimyr amber studies were summarised by Perkovsky & Vasilenko (2019) added by Azar & Maksoud (2020), Kolibáč & Perkovsky (2020), Fedotova & Perkovsky (2020), Hakim et al . (2021), Melnitsky & Ivanov (2021), Giłka et al . (2022), Ogłaza et al .…”