Research Article |
Corresponding author: Yu-Zhou Du ( yzdu@yzu.edu.cn ) Academic editor: Wolfram Graf
© 2016 Zhi-Teng Chen, Yu-Zhou Du.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Chen Z-T, Du Y-Z (2016) A new species of Haploperla from China (Plecoptera, Chloroperlidae). ZooKeys 572: 1-6. https://doi.org/10.3897/zookeys.572.6270
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A new species of the genus Haploperla, H. triangulata sp. n., is described and illustrated from specimens collected in Qinghai province, China. Haploperla triangulata is characterized by the epiproct mostly sclerotized and hairless, sub-triangular in dorsal view and blunt at tip; and by the aedeagus with two median elliptical lobes ventrally. The new species is compared with its most similar congeners, and diagnostic characters are presented.
Stoneflies, species description, aquatic diversity
The genus Haploperla
All type specimens are preserved in 75% or 100% ethanol. Specimens were examined and illustrated using a Leica stereomicroscope-MZAPO. Images were taken using a Leica SZ45. The holotype of the new species is deposited in the Insect Collection of Yangzhou University, China.
Holotype. 1 male, China: Qinghai province, Huangzhong county, Shuixia, 101°41.25'E, 36°82.46'N, 2590 m, 8 August, 2015, leg. Yu-Zhou Du. Paratype: 1 male and 7 females, the same locality and data as holotype, leg. Yu-Zhou Du, Zhi-Hou Li, Qiu-Yu Fan.
This species is characterized by a pale head, a pale pronotum disc with median stripe and brown margins, and the abdominal terga 1–8 with a longitudinal stripe. Epiproct mostly sclerotized and hairless, sub-triangular in dorsal view with a blunt tip. Aedeagus ventrally with two median situated elliptical lobes.
This new species is most similar to H. valentinae Stark & Sivec, 2009, known from Sichuan Province, China, but differs in the formation of the epiproct, which is mostly sclerotized and hairless in H. triangulata sp. n., whereas it is with sclerotized margins, membranous posterodorsal area and sparse patch of setae in H. valentinae (see Figs 13 and 17 in
Triocellate. General color light yellow patterned with dark brown. Head mostly pale yellow without any markings; compound eyes and ocelli black (Fig.
Forewing length 6.5–7.0 mm, hindwing length 5.5–6.0 mm. Posterior margin of tergum 9 dark and slightly concave, covered with fine hairs. Tergum 10 divided (Fig.
Forewing length 7.0–7.5 mm, hindwing length 6.0–6.5 mm. General pattern similar to males. Abdominal segments 1–8 with median brown strip (Fig.
The species epithet refers to the sub-triangular shape of the epiproct.
China (Qinghai province).
We describe a new species of the genus Haploperla, thereby increasing the total number of Haploperla species recorded in China to five. More Haploperla species are expected to be found in China in the future because the geographical conditions ensure suitable resources for stoneflies. More studies are needed to enrich our understanding of Haploperla.
We thank two reviewers (Boris Kondratieff and Dávid Murányi) and Subject Editor Wolfram Graf for useful comments and scrutiny. This research was supported by the National Natural Science Foundation of China (No. 31071958).