Neoperla huangshana Huo, Du & Zhu, 2021

Huo, Qingbo, Du, Yuzhou, Zhu, Binqing & Yu, Lei, 2021, Notes on Neoperla sinensis Chu, 1928 and Neoperla anjiensis Yang & Yang, 1998 with descriptions of new species of Neoperla from China (Plecoptera: Perlidae), Zootaxa 5004 (2), pp. 288-310 : 294-295

publication ID	https://doi.org/ 10.11646/zootaxa.5004.2.3
publication LSID	lsid:zoobank.org:pub:2A97583C-D7C8-4E61-94CD-849D4FA29A7F
persistent identifier	https://treatment.plazi.org/id/815DB576-DD1E-E526-1DD8-FCBFF4A497CE
treatment provided by	Plazi
scientific name	Neoperla huangshana Huo, Du & Zhu
status	sp. nov.

Treatment

Neoperla huangshana Huo, Du & Zhu View in CoL , sp. nov.

( Figs. 10–20 View FIGURE 10 View FIGURE 11 View FIGURE 12 View FIGURE 13 View FIGURE 14 View FIGURE 15 View FIGURE 16 View FIGURE 17 View FIGURE 18 View FIGURE 19 View FIGURE 20 , 31 View FIGURE 31 )

Type material: Holotype: ♂ ( ICYZU), China, Anhui Province, Huangshan City, Mt. Huangshan , “the Valley of Wild Monkeys”, 597m, 30°5′11.508″N, 118°8′29.7816″E, 2020–IV–8, leg. Huo Qing-Bo, Zhu Bin-Qing. Para- types: 6♂♂, 6♀♀ ( ICYZU), the same location as the holotype; 2021–III–24, leg. Huo Qing-Bo, Zhao Meng-Yuan, Xiang Ya-Nan. GoogleMaps

Adult habitus: General body color dark brown. Distance between ocelli ca. 1.5X as wide as diameter of one ocellus. Head brownish, slightly orange, with a rounded dark spot covering ocellar area, and a Y-shaped dark spot on the posteromedial frons; antennae and palpi dark brown. Pronotum mostly dark brown except posterolateral margins lighter, trapezoidal, with obscure rugosities. Wings translucent, veins dark brown; legs dark brown except base of femora and middle of tibiae paler. Cerci long and brown ( Figs. 10 View FIGURE 10 , 15 View FIGURE 15 ).

Male: Forewing length ca. 12.5–13.0 mm, hindwing length 11.0– 11.5 mm, body length 10.0–12.0 mm. Abdomen pale brown to yellowish, except the lateral plates and medial terga 5–7 mostly dark brown. Tergum 7 with an anterior process with shallowly bilobed caudal edge; posterior part of T 7 with a sclerotized, raised, bat-shaped process, bearing almost no sensilla patch. Tergum 8 with an erect tongue-like process, with several ventral spines at distal margin. Tergum 9 slightly sclerotized. Hemitergal processes sclerotized, fingerlike, slightly curved outward, front of the base extended forward as a wide lobe ( Figs. 11–12 View FIGURE 11 View FIGURE 12 ). Aedeagal tube plump and sclerotized dorsally, curved ventrad forming a hook-like tip. Aedeagal sac about 1.4X longer than tube, with 3~4 rows of spines that increase in size from base to apex, and a ventral band formed of scaled short spines; apical inner sclerite U-shaped, straight with multiple teeth basally, not everted but visible through the cuticle ( Figs. 13–14 View FIGURE 13 View FIGURE 14 ).

Female: Forewing length ca. 16.0– 18.5 mm, hindwing length 14.0–16.0 mm, body length 14.0– 15.5 mm. Subgenital plate small rectangular, heavily sclerotized, with multiple lateral serrations. Vagina similar to N. sinensis , but its apex almost without dorsal sclerite, and the basal folds with denser asperities ( Fig. 16 View FIGURE 16 ).

Egg: Barrel shaped; dark brown. Length ca. 0.41 mm, width ca. 0.23 mm. Collar sessile; rim narrow and smooth; base of collar with a distinct ring of pentagonal or hexagonal follicle cell impressions. Striae thick, ca. 46 visible in lateral aspect; separated by narrow punctate sulci. Lid small, covered with fine punctations throughout, follicle cell impressions pentagonal or hexagonal, indistinct ( Fig. 17 View FIGURE 17 ).

Mature nymph (exuviae only): Body length 11.0 mm (♂); 14.0 mm (♀). General body color dark brown; body covered with dark hair ( Fig. 18 View FIGURE 18 ). Head with a transverse dark stripe. Pronotum margins surrounded by a dark circular ring. Wingpad with a dark oblique band. Abdomen with a medial dark line ( Fig. 18 View FIGURE 18 ). Male and female mouthpart as shown in Fig. 19 View FIGURE 19 , typical in this genus.

Distribution: China (Anhui Province) ( Fig. 31 View FIGURE 31 ).

Etymology: The species name refers to Mt. Huangshan, the type locality.

Diagnosis: This new species is similar to N. sinensis , but its male abdominal stripes, bat-shaped procces on tergum 7, and the wide basal lobe on hemitergal process are distinctly different from the later. The aedeagal sac of this species is also similar with N. sinensis , with its basal and ventral spines much thicker, and the ventral spines more distinct. The U-shaped inner sclerite of aedeagal sac with multitooth basally.

Remark: This species inhabits wide streams with dense high canopy. Mature nymphs emerged on rocks along the river ( Fig. 20 View FIGURE 20 ). During the peak of emergence, adults will quickly move to nearby bridges or walls after emergence.