Two new species of Amphinemura (Plecoptera: Nemouridae) from Taiwan Province on the southeast coast of China Author Zhao, Meng-Yuan 0000-0003-2220-9924 School of Horticulture and Plant Protection & Institute of Applied Entomology, Yangzhou University, Yangzhou 225009, China Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education, Yangzhou University, Yangzhou 225009, China & 498308746 @ qq. com; https: // orcid. org / 0000 - 0003 - 2220 - 9924 498308746@qq.com Author Du, Yu-Zhou School of Horticulture and Plant Protection & Institute of Applied Entomology, Yangzhou University, Yangzhou 225009, China Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education, Yangzhou University, Yangzhou 225009, China text Zootaxa 2021 2021-05-12 4969 3 573 580 journal article 6409 10.11646/zootaxa.4969.3.9 b85906d7-309b-4476-980d-10d60e5d2c09 1175-5326 4751525 9DA4D4D1-32F7-4071-80B5-6BF22648A718 Amphinemura reni Du & Zhao , sp. nov. Type material: Holotype , 1♂ , China , Taiwan Province , Ali Mountain , 2200–2500m , 2012-X-23 , leg. Ren Shun- Xiang ( ICYZU ) . Paratypes , 5♂♂ , 1♀ , the same data as the holotype ( ICYZU ). Adult habitus: Head, antennae dark brown; pronotum dark brown. Cervical gills highly branched. Wings hyaline, veins slightly brown. Legs brown ( Fig. 1 ). Male: Forewing length 6.2–6.8 mm , hind wing 5.0– 5.6 mm . Tergum 9 sclerotized, concaved at median of anterior margin, forming a small mid-posterior indention, with spines laterally. Tergum 10 sclerotized mostly, forming a membranous concavity below the epiproct, with few small spines laterally ( Fig. 2A, D ). Hypoproct broad basally, tapering toward the tip; vesicle slender, length 4 × width ( Fig. 2B ). Paraproct divided into 3 lobes, inner lobe slightly sclerotized, simple; median lobe sclerotized, broad basally, narrowed from the median to the apex, with a row of spines near the tip, apical connected with the tip of outer lobe, with several spines apically; outer lobe sclerotized, slightly broad and curved medially ( Fig. 2C, D ). Epiproct short and wide with a slight apical concave, dorsal sclerite membranous mostly, sclerotized basally, inflated apical extending to ventral; lateral arm slender, darkly sclerotized; ventral sclerite sclerotized, broad basally, forming a median keel-shaped ridge, bearing two rows of spines ventrally, tip of the keel reaching over dorsal sclerite forming a round and blunt projection ( Fig. 2A, D ). Cerci membranous, with setae. FIGURE 1. Amphinemura reni Du & Zhao , sp. nov. Male, A: head and pronotum, dorsal view; B: prothorax and gills, ventral view. FIGURE 2. Amphinemura reni Du & Zhao , sp. nov. Male terminalia, A: dorsal view; B: ventral view; C: lateral view; D: epiproct, dorsal view. Female: General pattern and coloration of females similar to males ( Fig. 4 ). Forewing length 7.0 mm, hindwing length 6.5 mm . Sternum 7 with a semicircular pregenital plate, slightly sclerotized and slightly overlapping anterior of sternum 8. Sternum 8 forms a trapezoidal subgenital plate with a slight medial indentation. Paragenital plate forming a pair of dark stick-like sclerites, extending to sternum 7 and concaved inward slightly near the tip ( Fig. 5 ). Paraprocts and cerci brownish. FIGURE 3. Amphinemura reni Du & Zhao , sp. nov. Male, A: terminalia, ventral view; B: terminalia, dorsal view; epiproct, C: lateral view; D: ventral view; E: paraproct, ventral view. FIGURE 4. Amphinemura reni Du & Zhao , sp. nov. Female, A: head and pronotum, dorsal view; B: prothorax and gills, ventral view. Etymology: The specific epithet refers to the collector of type species. Remarks: The new species is similar to A. flavinotus Shimizu, 1997 in epiproct with a slight concave near the tip and ventral sclerite forming a median keel-shaped ridge with spines, but quite distinct from A. flavinotus and other known species on the connected median lobe and outer lobe of paraproct. The paraproct median lobe of A. reni broad basally, but narrowed from the median to the apex with a row of spines near the tip and the outer lobe strongly sclerotized, slightly broad and curved medially without apical spines, while in A. flavinotus the apex of median lobe round and blunt and the outer lobe extending upward with 2 or 3 spines at the tip. Additionally, the slender, darkly sclerotized lateral arm and blunt projection over the apex of epiproct in A. reni are also different from the triangular tip of keel in A. flavinotus .