A New Subgenus of Rhithrogena from China, with Description of a New Species (Ephemeroptera: Heptageniidae)

C-F. Zhou; J. G. Peters

doi:10.1603/0013-8746(2004)097[0898:ANSORF]2.0.CO;2

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C-F. Zhou,¹ J. G. Peters²

¹Institute of Genetic Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210097, P.R. China
²Entomology, CESTA, Florida A&M University, Tallahassee, FL 32307 ( ) janice.peters@famu.edu

Abstract

Imagos of Rhithrogena (Tumungula) unica subgen. n., sp. n. from Yunnan and Guizhou provinces, China, have a series of unique characteristics. Male imagos have a hypertrophied foreclaw and a first tarsal segment ≈1.5 times the length of the second. The male styliger plate has two sharp projections, and the penis lobes are divergent without titillators but with spiny median lobes. Nymphal characters are those of the genus as presently defined: three caudal filaments and gills modified to form an adhesive disc.

Citation Download Citation

C-F. Zhou and J. G. Peters "A New Subgenus of Rhithrogena from China, with Description of a New Species (Ephemeroptera: Heptageniidae)," Annals of the Entomological Society of America 97(5), 898-902, (1 September 2004). https://doi.org/10.1603/0013-8746(2004)097[0898:ANSORF]2.0.CO;2

Received: 9 January 2004; Accepted: 1 May 2004; Published: 1 September 2004