Biodiversity Data Journal :
Taxonomy & Inventories
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Corresponding author: Yu-Zhou Du (yzdu@yzu.edu.cn)
Academic editor: Jean-Luc Gattolliat
Received: 09 May 2022 | Accepted: 22 Jun 2022 | Published: 07 Jul 2022
© 2022 Abdur Rehman, Qing-Bo Huo, 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:
Rehman A, Huo Q-B, Du Y-Z (2022) A new species of Sweltsa Ricker, 1943 (Plecoptera, Chloroperlidae) and a supplementary description of Sweltsa hamula Chen & Du, 2017 from China. Biodiversity Data Journal 10: e86347. https://doi.org/10.3897/BDJ.10.e86347
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The genus Sweltsa is a small to medium-sized stonefly with distinct coloured wings, giving the species the common name of green stoneflies. It belongs to the family Chloroperlidae. This genus includes more than 55 species world wide, 14 of which have been reported from China.
A new species of the genus Sweltsa Ricker, 1943, Sweltsa liupanshana Rehman, Du & Huo sp. nov. from Ningxia Hui Autonomous Region, Liupan Mountain, China is described; this is the second record of Sweltsa from Ningxia Hui Autonomous Region. In addition, the first female description and male supplementary description of Sweltsa hamula Chen & Du, 2017 from Sichuan Province are provided. Diagnosis, description and colour illustration of the new species and of Sweltsa hamula are provided and the morphological characteristics are compared with closely-related species.
Stoneflies, Sweltsa liupanshana sp. nov., Sweltsa hamula, Ningxia, new species, China
The chloroperlid genus Sweltsa Ricker, 1943 belongs to the subfamily Chloroperlinae Okamoto, 1912. The genus Sweltsa was proposed by
The specimens were collected by aerial net or hand-picked and preserved in 75% ethanol. Terminalia were examined and illustrated by KEYENCE VHX-5000 and the final images were prepared using Adobe Photoshop CS6. The specimens were deposited in the Insect collection of Yangzhou University (ICYZU), Jiangsu Province, China. The morphological terminology of
Sweltsa Ricker, 1943
Type species: Sweltsa oregonensis Frison, 1935
Adult habitus: Triocellate. General body colour pale, yellow to brown in alcohol. Head with large, quadrate, median dark brown marking covering frons and ocellar areas; compound eyes black, ocelli brownish with black rings, median ocellus paler; antennae and palpi light brown (Fig.
Body length 6.5–7.0 mm, forewing length 6.0–6.5 mm, hind-wing length 5.0–5.5 mm (n = 2). Tergum 9 paler, without any transverse process or modification (Fig.
Body length 7.0–7.5 mm, forewing length 6.5–7.0 mm, hind-wing length 5.5–6.0 mm (n = 3). Habitus generally similar to male (Fig.
The shape of the epiproct is characteristic of this new species. Epiproct short and almost parallel from base to apex dorsally, lateromedially sclerotised; apex swollen and rounded in dorsal view (Fig.
The species is named after the type locality, Liupan Mountain, also known by the Chinese name Liupanshan.
China (Ningxia Hui Autonomous Region and Henan Province).
The new species pigmentation is mostly similar to Sweltsa bicurvata (
Male head with median dark brown marking covering frons and ocellar areas. Pronotum disc with median brown band, medially pale with light rugosities, margins dark brown (Fig.
Body length 9.0–9.5 mm, forewing length 8.0–8.5 mm, hind-wing length 7.0–8.0 mm (n = 4). Habitus generally similar to male (Fig.
China, Sichuan Province, Wanglang National Nature Reserve.
This species was established by
This study is supported by the National Natural Science Foundation of China (No. 31872266, 31071958, 32170459). Moreover, we express our heartfelt thanks to reviewers for providing comments that significantly improved the manuscript.
Abdur Rehman identified the specimens, wrote the manuscript and prepared the manuscript figures. Qing-Bo Huo helped in the identification and reviewed the manuscript draft. Yu-Zhou Du confirmed the identification, reviewed the manuscript and collected the specimens.