Abstract
New male pelecinid wasps (Hymenoptera: Pelecinidae) from the Yixian Formation of western Liaoning (China)Two new genera and speciesAbropelecinus annulatusgen. et sp. nov. andAzygopelecinus clavatusgen. et sp. nov., placed in the subfamily Iscopininae of the family Pelecinidae, are described and illustrated.Sinopecinus viriosusZhang, Rasnitsyn & Zhang, 2002 are re-described. All these male specimens were collected from the Yixian Formation of Beipiao City, Liaoning Province, northeastern China. A key to the male species of the subfamily Iscopininae is given. In addition, sexual dimorphism in Pelecinidae and the paleoclimate of the Yixian Formation are briefly discussed.
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