Amphinemura liui Yan, Yang & Li, 2022

Yan, Yanhua, Li, Mengyu, Yang, Ding & Li, Weihai, 2022, Two new species of Amphinemura (Plecoptera: Nemouridae) from southwestern China, Zootaxa 5194 (3), pp. 435-443 : 438-441

publication ID	https://doi.org/ 10.11646/zootaxa.5194.3.7
publication LSID	lsid:zoobank.org:pub:BDFE3BB8-8027-468B-BF57-A8F4E8007812
DOI	https://doi.org/10.5281/zenodo.7154630
persistent identifier	https://treatment.plazi.org/id/1C2C87E0-FFA1-B323-FF02-F8DFFD4CFC12
treatment provided by	Plazi
scientific name	Amphinemura liui Yan, Yang & Li
status	sp. nov.

Treatment

Amphinemura liui Yan, Yang & Li , sp. nov.

( Figs. 3 View FIGURE 3 , 4d–4f View FIGURE 4 )

Male habitus. Body color generally brown. Headdark brown; antennae brown, scape and pedicel darker, palpi brownish; compound eyes black; head slightly wider than pronotum; pronotum brown, corners obtuse, with obscure dark markings; legs brownish. Wing membranes subhyaline, veins brown. Abdominal segments brown with darker terminalia.

Male ( Figs. 3 View FIGURE 3 , 4d–4f View FIGURE 4 ). Forewing length 6.5–6.6 mm, hindwing length 5.0– 5.1 mm (n = 2). Tergum 9 sclerotized, with an arch-like mid-posterior incision, two paramedial groups of short and long hairs and several tiny spines ( Figs. 3a View FIGURE 3 , 4d View FIGURE 4 ). Slender vesicle of sternum 9 claviform, length barely 3.0X maximum width, slightly constricted basally, and gradually swollen apically ( Figs. 3b View FIGURE 3 , 4e View FIGURE 4 ). Hypoproct subquadrate at basal half, gradually narrowing toward tubular tip. Tergum 10 sclerotized, with a membranous concavity present below the epiproct, bearing a few black spines on either side of the concavity ( Fig. 3a View FIGURE 3 ). Cercus slightly sclerotized, length approximately 2.0X width. Epiproct nearly rectangular ( Figs. 3a View FIGURE 3 , 4a View FIGURE 4 ), apex with a small anteromedial notch ( Fig. 3c View FIGURE 3 ). Dorsal sclerite mostly membranous, with two darkly sclerotized band-like lateral arms, the inner margins of which slightly double-curved ( Figs. 3a View FIGURE 3 , 4d View FIGURE 4 ). Ventral sclerite distinctly sclerotized, broad at base, then tapering toward apex, apical portion slightly enlarged and inserted into the fold of dorsal sclerite ( Figs. 3a View FIGURE 3 , 4f View FIGURE 4 ), ventral ridge forming an acute triangle with rows of black spines ( Fig. 4f View FIGURE 4 ). Paraproct inner lobes sclerotized, nearly parallel-sided with a rounded apex, base partly hidden by hypoproct ( Figs. 3b, 3e View FIGURE 3 , 4e View FIGURE 4 ); median lobe strongly sclerotized, curved upward medially, usually with four narrowly separated groups of 2–5 dorsum-directed spines apically and two irregular rows of 10–11 long spines subapically ( Figs. 3a, 3e View FIGURE 3 , 4d View FIGURE 4 ); outer lobe as long as median lobe, distinctly sclerotized, apex membranous and distinctly curved upwardwith irregular rows of 6–7 long spinesapically ( Fig. 3e View FIGURE 3 ).

Female. Unknown.

Nymph. Unknown.

Type material. Holotype male ( CAU): CHINA, Chongqing municipality, Jiangjin District, Simianshan Town, Dawopu , 885 m, N 28.582 3, E 106.351 9, 27-IV-2013, leg. Xingyue Liu. GoogleMaps Paratype: 1 male ( HIST), the same data as the holotype GoogleMaps .

Distribution. China (Chongqing).

Etymology. The specific name refers to the collector, Dr. Xingyue Liu, a world-noted Megalopteran expert.

Remarks. The male of Amphinemura liui sp. nov. is similar to A. dabanshana Li, Du & Yang, 2017 known from Qinghai Province in regard to general structure of the epiproct and median lobe of the paraproct. However, the spinose arrangement of the paraproct differs distinctly: the median lobe of A.liui sp. nov. bears four narrowly separated groups of 2–5 dorsally-directed spines apically besides the similar subapical rows of 10–11 long spines (comparing Fig.3e View FIGURE 3 vs fig. 1a in Li et al. 2017a). Amphinemura liui sp. nov. is also close to A. gyracantha Ji & Du, 2014 , a species reported from Sichuan Province, in sharing a notched epiproct tip and similar median lobes of the paraprocts. However, A. gyracantha has slender lateral arms (figs. 1, 5 in Ji & Du 2014), whereas lateral arms of the new species are robust and band-like ( Figs. 3a View FIGURE 3 , 4d View FIGURE 4 ).