Cryptoperla zhejiangensis, Chen, 2020

Chen, Zhi-Teng, 2020, Systematic notes on Cryptoperla Needham, 1909 (Plecoptera: Peltoperlidae) from China, with description of a new species from Zhejiang Province, Zootaxa 4810 (3), pp. 576-588 : 579-580

publication ID	https://doi.org/ 10.11646/zootaxa.4810.3.12
publication LSID	lsid:zoobank.org:pub:E290364F-0313-4500-B8DA-E5E72AB13DCF
DOI	https://doi.org/10.5281/zenodo.4331171
persistent identifier	https://treatment.plazi.org/id/DC3087FF-FFCC-FFB8-8DC3-CCD5CFE83126
treatment provided by	Plazi
scientific name	Cryptoperla zhejiangensis
status	sp. nov.

Treatment

Cryptoperla zhejiangensis View in CoL sp. nov.

Figs. 1–11 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 View FIGURE 8 View FIGURE 9 View FIGURE 10 View FIGURE 11 .

Male. Body ( Fig. 1 View FIGURE 1 ) length ca. 9 mm (n = 3). Body generally pale. Head ( Fig. 2 View FIGURE 2 ) generally pale. Biocellate; compound eyes dark and covered by short bristles.Antennae slender and dark brown. Pronotum subquadrate with obtuse corners, median area pale, lateral areas dark brown and covered with irregular pale pits. Macropterous ( Figs. 1 View FIGURE 1 , 3 View FIGURE 3 ); forewing length ca. 14 mm, hindwing length ca. 12 mm; wing membrane subhyaline, veins dark brown; wing apex with multiple veins. Femora pale, tibia and tarsi dark brown.

Abdominal segments generally pale ( Fig. 4 View FIGURE 4 ). Tergum 10 slightly elevated at posterior half, posteromedially with a subtriangular process curved downwards ( Fig. 5 View FIGURE 5 ). Sternum 9 extended backwards, posterior margin arched, posterolaterally with two oblique impressions. Ventral lobe pale and elliptical, ca. 1.5X wide as its length, fringed with long bristles ( Fig. 5D View FIGURE 5 ). Cerci mostly brown and covered by dense moderate bristles ( Figs. 6 View FIGURE 6 , 7 View FIGURE 7 ); basal cercal segment ca. 2.5X long as its width, apex unmodified; segments 2–9 each with a bunch of upcurved, moderate to long bristles along inner margin, longest bristles present on segments 5–8 and ca. 1.5X long as the cercal width. Aedeagus membranous ( Fig. 8 View FIGURE 8 ), with two large apical lobes and two rugose, tiny median lobes from dorsal view ( Fig. 8A, B View FIGURE 8 ); from ventral view, with two large apical lobes, two basolateral low calluses and six tiny median lobes, inner margins of the two large apical lobes with a U-shaped patch of long bristles ( Fig. 8C View FIGURE 8 ).

Female. Body ( Fig. 9 View FIGURE 9 ) length ca. 12 mm (n = 1). Color pattern similar to males. Subgenital plate large and broad, rounded at posterior margin, reaching anterior half of sternum 10 ( Fig. 10 View FIGURE 10 ).

Type material. Holotype: male, China: Zhejiang Province, Quzhou City, Housuntang ( Fig. 11 View FIGURE 11 ), 28.81113727°N, 118.97745093°E, 640 m, leg. Xiao-Han Ye (ICJUST) GoogleMaps . Paratypes: one male, same locality and date as holotype; one female, Zhejiang Province, Quzhou City, Mt. Yaowangshan, upstream of Housuntang , 28°52′42.63″N,118° 5 5′22.45″E, 250 m, leg. Xiao-Han Ye; one male, Zhejiang Province, Quzhou City, Dalu Village , leg. Xiao-Han Ye (ICJUST) GoogleMaps .

Etymology. The specific epithet refers to the first new species of Cryptoperla known from Zhejiang Province.

Diganosis. The new species apparently belongs to the C. japonica species group lacking a projecting apical spur or lobes on the basal cercal segments. The new species is easily distinguished when compared with all other members of the C. japonica group: Cryptoperla zhejiangensis differs from C. japonica ( Okamoto, 1912) by the absence of long bristles on first basal cercal segment, having a different aedeagal shape, and by the rounded shape of female subgenital plate (see figs. 17, 23 in Uchida & Isobe 1988); C. zhejiangensis differs from C. klapaleki Stark & Sivec, 2007 by the different pattern on head and pronotum, presence of longest bristles on cercal segments 5–8 and different aedeagal shape (see figs. 9–11 in Stark & Sivec 2007a); C. zhejiangensis differs from C. kosai Stark & Sivec, 2007 by the different pattern on head and pronotum, presence of longest bristles on cercal segments 5–8, different aedeagal shape and by the rounded shape of female subgenital plate (see figs. 25–27 in Stark & Sivec 2007b); C. zhejiangensis seems similar to C. kumari Stark, 1989 in the outline of aedeagus, but differs from the latter species by presence of more small median lobes on aedeagus, absence of long bristles on first basal cercal segment, and by the broader, rounded female subgenital plate (see figs. 40–44 in Stark 1989); C. zhejiangensis differs from C. meo Stark, 1989 by the presence of longest bristles on cercal segments 5–8 and by the broader, rounded female subgenital plate (see figs. 20–23 in Stark 1989); C. zhejiangensis differs from C. naga Stark, 1989 by the absence of long bristles on first basal cercal segment (see figs. 34, 37 in Stark 1989); C. zhejiangensis differs from C. nangongshana Huo & Du, 2018 by the different pattern on head and pronotum, absence of long bristles on first basal cercal segment and different aedeagal shape (see figs. 7–10 in Huo & Du 2018); C. zhejiangensis differs from C. obtusa ( Wu, 1973) by male tergum 7 without a triangular mesal lobe overlapping most of tergum 8 (see fig. 5 in Wu 1973); C. zhejiangensis differs from C. pentagonalis Zwick & Sivec, 1980 by the absence of long bristles on first basal cercal segment and different aedeagal shape (see fig. 22 in Zwick & Sivec 1980); C. zhejiangensis differs from C. simplex Stark & Sivec, 2007 by the different pattern on head and pronotum, presence of longest bristles on cercal segments 5–8, different aedeagal shape and by the broader, rounded female subgenital plate (see figs. 39–42 in Stark & Sivec 2007b); C. zhejiangensis differs from C. teana Li & Murányi, 2018 by the different pattern on head and pronotum, absence of long bristles on first basal cercal segment and different aedeagal shape (see figs. 1–17 in Li & Murányi 2018). When compared with the three species without male descriptions, C. meyi Stark & Sivec, 2007 , C. sinensis ( Wu & Claassen, 1934) and C. torva Needham, 1909 : the female of C. zhejiangensis differs from C. meyi by the different pattern on pronotum and the much broader female subgenital plate covering entire sternum 9 (see figs. 29–30 in Stark & Sivec 2007b); C. zhejiangensis differs from C. sinensis by the presence of pale and dark brown pattern on pronotum and the much larger female subgenital plate covering entire sternum 9 ( Wu & Claassen 1934); C. zhejiangensis differs from C. torva by the shorter female subgenital plate not covering the entire abdomen and by wing venation with more RP and anal branches ( Needham 1909).