Amphinemura liui Yan, Yang & Li 2022, sp. nov.
Creators: name: Yan, Yanhua
name: Li, Mengyu
name: Yang, Ding
name: Li, Weihai
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Nemouridae
Amphinemura
Amphinemura liui

description: Amphinemura liui Yan, Yang & Li, sp. nov.
(Figs. 3, 4d–4f)
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, 4d–4f). 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, 4d). Slender vesicle of sternum 9 claviform, length barely 3.0X maximum width, slightly constricted basally, and gradually swollen apically (Figs. 3b, 4e). 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). Cercus slightly sclerotized, length approximately 2.0X width. Epiproct nearly rectangular (Figs. 3a, 4a), apex with a small anteromedial notch (Fig. 3c). Dorsal sclerite mostly membranous, with two darkly sclerotized band-like lateral arms, the inner margins of which slightly double-curved (Figs. 3a, 4d). 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, 4f), ventral ridge forming an acute triangle with rows of black spines (Fig. 4f). Paraproct inner lobes sclerotized, nearly parallel-sided with a rounded apex, base partly hidden by hypoproct (Figs. 3b, 3e, 4e); 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, 4d); outer lobe as long as median lobe, distinctly sclerotized, apex membranous and distinctly curved upwardwith irregular rows of 6–7 long spinesapically (Fig. 3e).
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. Paratype: 1 male (HIST), the same data as the holotype.
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 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, 4d).
description: Published as part of Yan, Yanhua, Li, Mengyu, Yang, Ding & Li, Weihai, 2022, Two new species of Amphinemura (Plecoptera: Nemouridae) from southwestern China, pp. 435-443 in Zootaxa 5194 (3) on pages 438-441, DOI: 10.11646/zootaxa.5194.3.7, http://zenodo.org/record/7154622