Bethylonymellus imperfectus

Bethylonymellus imperfectus (Latin) is a fossil species of stinging hymenoptera of the genus Bethylonymellus from the family Bethylonymidae . One of the oldest representatives of the suborder stalk stalk . Discovered in the Jurassic fossil remains ( Central Asia , Kazakhstan , Karabastau Formation, Callovian tier , Karatau-Mikhailovka, about 165 Ma). Body length 5.0 mm, front wing length 2.5 mm. View Bethylonymellus imperfectus was first described by a print in 1975 Soviet and Russian paleoentomologist Alexander Pavlovich Rasnitsyn ( PIN RAS , Moscow , Russia ) and is included in the genus Bethylonymellus fossil superfamily Bethylonymoidea , the root group for all stinging Hymenoptera ( Aculeata ) ^{[1] [2] [3]} .