Two new species of Ghilarellinae (Hymenoptera, Cephoidea, Sepulcidae) from the Lower Cretaceous

One new species, Ghilarella elegantula sp. nov., in the family Sepulcidae is described and illustrated based on a well-preserved compression fossil specimen from the Lower Cretaceous Yixian Formation of northeastern China. The new species is characterized by having a large body size; forewing with costal area obviously narrowed basally, Sc and 2r-m absent, 1-Rs short, cell 1mcu large; and ovipositor elongated. In addition, Ghilarella cf. mercurialis is given its own name Ghilarella kopylovi as the new species in Ghilarella. An updated key for the known species of Ghilarella is provided. Moreover, a well-preserved ovipositor is reported for the first time in the subfamily Ghilarellinae. The two new species not only improve our understanding of Ghilarella by adding more morphological features, but also expand the distribution ranges of Ghilarellinae fossil records.