Nemoura cerciserrata Zhu, Du & Rehman, 2024
publication ID |
https://doi.org/ 10.3897/BDJ.12.e121451 |
publication LSID |
lsid:zoobank.org:pub:5F165E0F-140A-47D3-8FC9-287D1FE0FE3E |
DOI |
https://doi.org/10.5281/zenodo.13800195 |
persistent identifier |
https://treatment.plazi.org/id/9772E2EB-8E8D-4C80-83D3-304D0CEBB03B |
taxon LSID |
lsid:zoobank.org:act:9772E2EB-8E8D-4C80-83D3-304D0CEBB03B |
treatment provided by |
|
scientific name |
Nemoura cerciserrata Zhu, Du & Rehman |
status |
sp. nov. |
Nemoura cerciserrata Zhu, Du & Rehman View in CoL sp. nov.
Materials
Type status: Holotype. Occurrence: individualCount: 1; sex: Male; lifeStage: Adult; occurrenceStatus: present; occurrenceID: 6BB7C443-9554-526F-A0E8-381294D03443; Taxon: class: Insecta; order: Plecoptera ; family: Nemouridae ; genus: Nemoura ; specificEpithet: cerciserrata ; taxonRank: species; Location: continent: Asia; country: China; countryCode: CN; stateProvince: Guangdong; locality: Shaoguan City, Shixing county, Chebaling Nature Reserve ; decimalLatitude: 24.711731; decimalLongitude: 114.236787; Identification: identifiedBy: Zhu Ya-Fei, Abdur Rehman, Du Yu-Zhou; Event: year: 2024; month: 1; day: 15,; Record Level: institutionCode: ICYZU; basisOfRecord: PreservedSpecimen
Type status: Paratype. Occurrence: individualCount: 1; sex: Male; lifeStage: Adult; occurrenceStatus: present; occurrenceID: 29C5728A-30CD-5A41-9352-E82704EF2766; Taxon: class: Insecta; order: Plecoptera ; family: Nemouridae ; genus: Nemoura ; specificEpithet: cerciserrata ; taxonRank: species; Location: continent: Asia; country: China; countryCode: CN; stateProvince: Guangdong; locality: Shaoguan City, Shixing county, Chebaling Nature Reserve ; decimalLatitude: 24.711731; decimalLongitude: 114.236787; Identification: identifiedBy: Zhu Ya-Fei, Abdur Rehman, Du Yu-Zhou; Event: year: 2022; month: 1; day: 31; Record Level: institutionCode: ICYZU; basisOfRecord: PreservedSpecimen
Description
Adult habitus: Head dark brown, wider than pronotum; antennae pale brown; compound eyes dark brown. Pronotum subquadrate, angles slightly blunt rounded with darker rugosity. Wings subhyaline, veins dark brown. Legs pale brown (Fig. 5 View Figure 5 ).
Male
Body length 4.5 mm, fore-wing length 8.5 mm, hind-wing length 8.2 mm. Tergum 9 slightly sclerotised, with concave emargination in the centre and with several small hairs along posterior margin (Fig. 6 View Figure 6 A and Fig. 8 View Figure 8 A). Hypoproct broad basally and tapered towards blunt rounded tip. Vesicle rod-like, length approximately 3 × width (Figs. 7 B and 9 B). Tergum 10 strongly sclerotised, forming concavity below epiproct (Fig. 6 View Figure 6 A and Fig. 8 View Figure 8 A). Paraproct divided into two lobes: inner lobe sclerotised, shallow arcuate shape and approximately 3 / 4 length of outer lobe. Outer lobe slightly sclerotised presenting triangular resemblance at base. The outer lobe narrows at halfway point and forms vesicle-like structure at tip (Fig. 6 View Figure 6 B, Fig. 7 View Figure 7 C and Fig. 8 View Figure 8 F). Epiproct has membranous heart-shaped process at the top, 2 × longer than width. Dorsal sclerite broad basally, extending dorsolaterally, completely covering lateral aspects of epiproct and part of ventral aspect (Fig. 6 View Figure 6 A and Fig. 7 View Figure 7 A). Lateral arms distinctly sclerotised and run along lateral sides of epiproct. Ventral sclerite of epiproct darkly sclerotised, broad basally, forming pair of parallel ridges with 7-9 spines ventrally; these ventral ridges extend upwards to form an antler-like protrusion with two small blunt spines on tip (Fig. 7 View Figure 7 B and Fig. 8 View Figure 8 D). Cerci slightly sclerotised with two spines, with strong, spur in the middle and bears sclerotised black pointed spur at the end (Figs 6 View Figure 6 , 7 View Figure 7 ).
Diagnosis
Female
Unknown
Etymology
The latin cerciserrata refers to a strong, curving spur in the middle of the cerci. Serrata means toothed, like a saw.
Distribution
China (Guangdong Province).
Taxon discussion
The new species belongs to the ovocercia group and it is most similar to the Nemoura longistyla Zhao, Rehman & Du, 2023 , as it possesses a comparable epiproct with elongated protrusions at the apex ( Zhao et al. 2023). It can be distinguished from the latter by the following characteristics: in Nemoura sp. nov., the ventral sclerite of epiproct extends upwards to form an antler-like protrusion, with two small blunt spines on the tip. The features are not distinctly visible in the dorsal view (Figs 7 View Figure 7 , 8 View Figure 8 ), while the ventral sclerite extends upwards to form a horn-like protrusion and the apex has three small teeth in N. longistyla , which are more distinct in the lateral view. In addition, there is a strongly sclerotised sawing spine in the middle of the cerci, which is significantly different from N. longistyla (Figs 6 View Figure 6 , 7 View Figure 7 , 8 View Figure 8 ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
Kingdom |
|
Phylum |
|
Class |
|
Order |
|
Family |
|
Genus |