Simutnik S.A.1, Perkovsky E.E.1, Vasilenko D.V.2 2020. Efesus trufanovi Simutnik gen. et sp.n. (Hymenoptera: Chalcidoidea: Encyrtidae) from late Eocene Danish amber // Russian Entomol. J. Vol.29. No.3: 298–302 [in English].

1 I.I. Schmalhausen Institute of Zoology, National Academy of Sciences of Ukraine, Kiev 01030, Ukraine. E-mail:,

2 Borissiak Paleontological Institute, Russian Academy of Sciences, Moscow 117647, Russia. E-mail:

doi: 10.15298/rusentj.29.3.10

ABSTRACT. Efesus trufanovi Simutnik, gen. et sp.n., is described and illustrated based on a female specimen from Danish amber collection of the Zoological Museum of University of Copenhagen. It is the eighth Danish amber hymenopteran genus unknown from Baltic amber. The new genus is characterized by the long double row of closing setae (filum spinosum) on distal margin of the linea calva of forewings, cerci are advanced towards the middle of gaster, hypopygium not reaching metasomal apex, parastigma not expanded, stigmal vein with long uncus. Such a long double row of the filum spinosum, consisting of nine setae, has not yet been described among the fossil encyrtids. The new genus is considered unplaced within subfamily Encyrtinae.

KEY WORDS: Encyrtidae, Eocene, Danish amber, filum spinosum, cerci, fossils.

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