Amphinemura voluta ( Li & Yang, 2008 ) Zhu & Rehman & Du, 2024

Zhu, Ya-Fei, Rehman, Abdur & Du, Yu-Zhou, 2024, Two new species of Nemoura Latreille and a new combination of Amphinemura Ris (Plecoptera, Nemouridae) from the Nanling Mountains Region of China, Biodiversity Data Journal 12, pp. e 121451-e 121451 : e121451-

Amphinemura voluta ( Li & Yang, 2008) , comb. nov

Indonemoura voluta Li & Yang, 2008 - Li and Yang 2008: 100.

Materials

Type status: Other material. Occurrence: recordedBy: Unknown; sex: 1; lifeStage: Adult; occurrenceStatus: present; occurrenceID: 80B19B96-02DC-574B-AE80-A79A0B636131; Taxon: phylum: Arthropoda;; class: Insecta; order: Plecoptera ; family: Nemouridae ; genus: Amphinemur; specificEpithet: voluta ; scientificNameAuthorship: Li & Yang (2008); Location: continent: Asia; country: China; countryCode: CN; locality: Guangxi Zhuang Autonomous Region. Maoershan National Natural Reserve ; Identification: identifiedBy: Abdur Rehman, Zhu Ya-Fei, Du Yu-Zhou; dateIdentified: 10-02 - 2024; Event: year: 2020; month: 8; day: 29; Record Level: language: en; institutionCode: ICYZU; basisOfRecord: PreservedSpecimen

Description

Male: Cervical gills shrunk into ball (Fig. 9 ). Hypoproct broad basally and tapered towards tip. Vesicle slender, length approximately 3 × width (Fig. 10 B). Tergum 10 weakly sclerotised, with rather large median concavity bearing two groups of tiny black spines along lateral margin. Epiproct trifurcate distally; dorsal sclerite divided into pair of heavily sclerotised, spine-like lateral processes with rounded ventral projection medially (Fig. 11 C), distinctly curved, outwards subapically, bearing many spines apically (Fig. 10 ). Paraproct divided into three lobes: outer lobe reduced and knob-like; median lobe well developed, mostly sclerotised, strongly curved upwards, with bundle of spirally-arranged spines at membranous tip (Fig. 10 ); inner lobe weakly sclerotised, about 1 / 3 length of the median lobe, with triangular tip ( Li and Yang 2008).

Distribution

China (Guangxi Zhuang Autonomous Region).

Taxon discussion

This species was collected from Maoershan National Natural Reserve, Guangxi Zhuang Autonomous Region; the same collection sites were recorded in Li and Yang (2008). The cervical gills are shrunk into a ball, which is difficult to distinguish. After slight pressing, it can be seen that there is a cervical gill on each side of the mid-line, one inside and one outside of lateral cervical sclerites and each cervical gill has five branches (Fig. 10 B). In addition, the structures of tergum 9, tergum 10, hypoproct, epiproct and paraproct in this specimen are consistent with those described by Li and Yang (2008). Examining fresh specimens from the type locality, we propose to transfer this species to Amphinemura Ris, 1902 . This species has rather exceptional characteristics; very elongated sausage-shaped cerci while most species of the genus Amphinemura have rather short cerci, except in several Asian Amphinemura (e. g. A. mamillata , A. nanlingensis and A. chui ). Additionally, we consider this species as belonging the A. sinensis species group.

Figures

Figure 9. Amphinemura voluta (Li & Yang, 2008), comb. nov. male. A prothorax, ventral view; B cervical gills, ventral view.

Figure 10. Amphinemura voluta (Li & Yang, 2008), comb. nov. Male terminalia, A dorsal view; B ventral view; C lateral view.