Sakhalinencyrtus leleji Simutnik gen. et sp. nov. of earliest Encyrtidae (Hymenoptera, Chalcidoidea) from Sakhalinian amber

Article Biology

The earliest Encyrtidae (Hymenoptera, Chalcidoidea)

Serguei A. Simutnik

Summary: This study summarizes the data on Encyrtidae in middle Eocene Sakhalinian amber, redescribing several species and introducing a new genus and species. The differences between middle Eocene Encyrtids and late Eocene or extant species are highlighted, with a focus on a new fossil species with unique characteristics. Comparative morphological analysis of paleontological data reveals changes in morphological structures of Encyrtidae from middle Eocene to present day.

HISTORICAL BIOLOGY (2021)

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Article Paleontology

The First Finding of a Skin Beetle (Coleoptera, Dermestidae) from Sakhalinian Amber

E. E. Perkovsky et al.

Summary: A new species of dermestid, Trogoderma ainu sp. nov., is described from middle Eocene Sakhalinian amber. This is the first dermestid known from the Eocene of Asia and the second Trogoderma species found in amber. The genus Trogoderma has only been found in fossil resins in the preimaginal state. The fossil records of dermestids are also listed in the article.

PALEONTOLOGICAL JOURNAL (2021)

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Article Paleontology

First aphidiine wasp from the Sakhalinian amber

Elena M. Davidian et al.

Summary: The study describes the first ichneumonoid aphidiine wasp species from Sakhalinian amber, which is the oldest named fossil of its kind. The new species is believed to be very similar to existing species, but differs in some specific characteristics.

ACTA PALAEONTOLOGICA POLONICA (2021)

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Article Paleontology

The First Record of the Rust Fungus (Pucciniales) Spores from Middle Eocene Sakhalinian Amber

Yu Ya Tykhonenko et al.

Summary: Fungus spores resembling teliospores of Nyssopsora genus were found in Sakhalinian amber, suggesting they may belong to the Trevesia-Brassaiopsis group. This discovery supports the paleofaunistic data indicating a warm and humid climate in the Sakhalinian amber forest.

PALEONTOLOGICAL JOURNAL (2021)

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Article Entomology