Two new chironomids bearing peculiar morphological features from Japan and China (Diptera: Chironomidae)

Two new chironomids from Japan and China

  • Masaru Yamamoto | qsphn570@ybb.ne.jp
  • Nao Yamamoto Nara Women's University, KYOUSEI Science Center for Life and Nature, Japan.
  • Hongqu Tang Jinan University, Institute of Groundwater and Earth Science, China.

Abstract

A new subgenus, Nothorthocladius, of the genus Orthocladius v. d. Wulp and a new genus Yaethauma which bears a superficially resemblance to Collartomyia Goethgebuer of the subfamily Chironominae are erected, and the subgeneric and generic diagnoses are provided here. Orthocladius (Nothorthocladius) brevistylus sp. n. is described based on a single male and Yaethauma longiligulata sp. n. is described in both sexes. The former species is characterized from any other orthoclads by having the short gonostylus fused to gonocoxite. The species is treated as a member belonging to the genus Orthocladius based on various morphological features. The latter species is distinguishable from two other members of Collartomyia species by having the antepronotal lobe distinctly narrowed dorsally, the long ligula being sclerotized on the dorsolateral surface along outer margin, and the distinctly bifurcated pulvilli. Furthermore, in the male, the long and spindle-shaped anal point, the short and ovoid gonostylus, the long and distally expanded median appendage, the short and dorsolaterally elongate laterosternite, the plate-like apodeme lobe and the spermatheca bearing sclerotized neck in the female will be sufficiently separated from any described genera clearly.

Downloads

Download data is not yet available.
Published
2018-11-13
Keywords:
Orthocladius subgenus, Nothorthocladius new subgenus, Chironominae genus, Yaethauma new genus, new species, Chironomidae
Statistics
Abstract views: 234

PDF: 123
Share it

PlumX Metrics

PlumX Metrics provide insights into the ways people interact with individual pieces of research output (articles, conference proceedings, book chapters, and many more) in the online environment. Examples include, when research is mentioned in the news or is tweeted about. Collectively known as PlumX Metrics, these metrics are divided into five categories to help make sense of the huge amounts of data involved and to enable analysis by comparing like with like.

How to Cite
1.
Yamamoto M, Yamamoto N, Tang H. Two new chironomids bearing peculiar morphological features from Japan and China (Diptera: Chironomidae). jlimnol [Internet]. 13Nov.2018 [cited 13Dec.2019];77(1s). Available from: https://jlimnol.it/index.php/jlimnol/article/view/jlimnol.2018.1775