Description of three new Chinese species of the genus Mesonemoura (Plecoptera: Nemouridae)

Authors

  • Yu-Zhou Du School of Horticulture and Plant Protection and Institute of Applied Entomology, Yangzhou University, Yangzhou 225009, China
  • Xiao-Yu Ji School of Horticulture and Plant Protection and Institute of Applied Entomology, Yangzhou University, Yangzhou 225009, China
  • Zhi-Jie Wang School of Horticulture and Plant Protection and Institute of Applied Entomology, Yangzhou University, Yangzhou 225009, China Department of Horticulture, Suqian College, Suqian 223800, China

Keywords:

Plecoptera, Nemouridae, Mesonemoura, new species, China

Abstract

Three new Chinese species of the genus Mesonemoura (Plecoptera: Nemouridae), Mesonemoura dilatata Du & Ji, sp. nov., M. sichuanensis Du & Ji, sp. nov. and M. sinistracurva Du & Wang, sp. nov., are described and illustrated. Mesonemoura dilatata is characterized by the flagellum of the epiproct being long and curved, forming a swollen membranous apex. Mesonemoura sichuanensis is characterized by tergum 9 forming a pair of obtuse angles mid-posteriorly, and by the ventral sclerite of the epiproct being basally broad, 2 × the width of the dorsal sclerite. Mesonemoura sinistracurva is characterized by the presence of a long stylus that curves abruptly to the left as it leaves the tip of the epiproct. A key to the Chinese species of this genus is presented.

 

Resumen

Se describen e ilustran tres nuevas especies del género Mesonemoura (Plecoptera: Nemouridae) de China, Mesonemoura dilatata Du &y Ji, sp. nov., M. sichuanensis Du & Ji, sp. nov. y M. sinestracurva Du & Wang, sp. nov.. Se caracteriza M. dilatata por el flagelo del epiprocto largo y curvado, formando un ápice membranoso hinchado. Se caracteriza M. sichuanensis por tener el tergo 9 formando un par de ángulos obtusos mediados-posteriores, y por el esclerito ventral del epiprocto basal amplio, 2 × la anchura del esclerito dorsal. Se caracteriza M. sinestracurva por la presencia de un largo estilus que se curva bruscamente a la izquierda al salir de la punta de la epiprocto. También se presenta una clave para las especies de este género en China.

 

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Issue

Vol. 98, No. 1 (March 2015)

Section

Research Papers

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