New fossil genus and species of Sinoalidae (Hemiptera: Cercopoidea) from the Middle to Upper Jurassic deposits in northeastern China

Yan-Zhe Fu,Di-Ying Huang

doi:10.14411/eje.2018.011

Abstract

A new fossil genus and species of Sinoalidae, Stictocercopis wuhuaensis gen. et sp. n., from the Middle to Upper Jurassic Haifanggou Formation at Daohugou, Inner Mongolia, northeastern China is described, illustrated and its systematic position discussed, on the basis of four complete well-preserved specimens. The new genus distinctly differs from other sinoalids in having relatively complex wing venation and tegmen spots. The intra-specific variation in venation is also discussed. The new discovery increases the palaeodiversity of sinoalids in the early assemblage of the Yanliao biota from the Daohugou beds.

Highlights

The hemipteran superfamily Cercopoidea Leach, 1815 is the second largest superfamily in the Cicadomorpha, comprising approximately 3000 described species (Hamilton, 2001; Dietrich, 2002)
The fossil Cercopoids comprise nearly 40 species attributed to three extinct families (Procercopidae, Sinoalidae and Cercopionidae) known from the Mesozoic to Cenozoic and one extant family (Clastopteridae) from Dominican amber (Poinar et al, 2014; Chen et al, 2015)
They include Luanpingia longa (Hong, 1983), Huabeicercopis yangi (Hong, 1983) and Hebeicercopis triangulate (Hong, 1983), which were originally described from the Middle to Upper Jurassic Jiulongshan Formation at Zhouyingzi Village, Luanping County, Chengde city, Hebei Province; Sinoala parallelivena Wang et al, 2012, Jiania crebra Wang et al, 2012, J. gracila Wang et al, 2012, Luanpingia daohugouensis Fu et al, 2017 and Shufania hani Chen et al, 2017, which were described from the Middle to Upper Jurassic Haifanggou Formation at Daohugou Village, Ningcheng County, Chifeng City, Inner Mongolia

Summary

INTRODUCTION

The hemipteran superfamily Cercopoidea Leach, 1815 is the second largest superfamily in the Cicadomorpha, comprising approximately 3000 described species (Hamilton, 2001; Dietrich, 2002). A small family of the Cercopoidea, named Sinoalidae, established based on fossils from the midJurassic Daohugou beds, is closely related to Procercopidae and shares some synapomorphies with Hylicelloidea (Wang et al, 2012). The diversity of Sinoalidae is relatively low, with approximately eight species attributed to six genera They include Luanpingia longa (Hong, 1983), Huabeicercopis yangi (Hong, 1983) and Hebeicercopis triangulate (Hong, 1983), which were originally described from the Middle to Upper Jurassic Jiulongshan Formation at Zhouyingzi Village, Luanping County, Chengde city, Hebei Province; Sinoala parallelivena Wang et al, 2012, Jiania crebra Wang et al, 2012, J. gracila Wang et al, 2012, Luanpingia daohugouensis Fu et al, 2017 and Shufania hani Chen et al, 2017, which were described from the Middle to Upper Jurassic Haifanggou Formation at Daohugou Village, Ningcheng County, Chifeng City, Inner Mongolia. We describe a new fossil genus and species of Sinoalidae, Stictocercopis wuhuaensis gen. et sp. n. from the Middle to Upper Jurassic Haifanggou Formation at Daohugou, Inner Mongolia, northeastern China

MATERIAL AND METHODS

DISCUSSION