Three new species of the newly recorded genus Monochorhynchus Muir, 1917 from China, with observations on the fine structure of the mouthparts (Hemiptera: Fulgoromorpha: Derbidae)

  • Weiqiang Chen Key Laboratory of Plant Protection Resources and Pest Management of the Ministry of Education, Entomological Museum, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China https://orcid.org/0009-0006-1097-2243
  • Yinglun Wang Key Laboratory of Plant Protection Resources and Pest Management of the Ministry of Education, Entomological Museum, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China https://orcid.org/0009-0002-1534-399X
  • Yalin Zhang Key Laboratory of Plant Protection Resources and Pest Management of the Ministry of Education, Entomological Museum, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China https://orcid.org/0000-0002-1204-9181
DOI: https://doi.org/10.5852/ejt.2026.1043.3205
Keywords: planthopper, Zoraidini, ultrastructure, rostrum

Abstract

The planthopper genus Monochorhynchus Muir, 1917 is reviewed, newly recorded from China, and transferred to the subtribe Lyddina. Three new species from China, M. dehongensis sp. nov., M. obscurus sp. nov., and M. psammochroma sp. nov., are described and illustrated based on morphological characteristics. A checklist of the species of Monochorhynchus, including their geographic distribution, is provided, along with an identification key to the known species. The ultrastructure of the mouthparts of M. dehongensis is briefly investigated using the scanning electron microscope. The functions and taxonomic value of these structures are discussed.

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Published
2026-02-26
How to Cite
Chen, W., Wang, Y., & Zhang, Y. (2026). Three new species of the newly recorded genus Monochorhynchus Muir, 1917 from China, with observations on the fine structure of the mouthparts (Hemiptera: Fulgoromorpha: Derbidae). European Journal of Taxonomy, 1043(1), 62–86. https://doi.org/10.5852/ejt.2026.1043.3205
Issue
Vol. 1043 (2026)
Section
Research article

Copyright (c) 2026 Weiqiang Chen, Yinglun Wang, Yalin Zhang

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