Kiotina yexiaohani, Su & Chen, 2020

Su, Tong & Chen, Zhi-Teng, 2020, A synopsis of Kiotina Klapálek, 1907 (Plecoptera: Perlidae) from China, with description of a new species from Zhejiang Province, Zootaxa 4786 (4), pp. 583-591 : 585-587

publication ID	https://doi.org/ 10.11646/zootaxa.4786.4.10
publication LSID	lsid:zoobank.org:pub:146B6DE5-5E9A-47EC-A8BE-D50DF6D50F4B
DOI	https://doi.org/10.5281/zenodo.3883221
persistent identifier	https://treatment.plazi.org/id/9F7487C5-FA30-FFEF-49BA-FEDBF99FD7E1
treatment provided by	Plazi
scientific name	Kiotina yexiaohani
status	sp. nov.

Treatment

Kiotina yexiaohani View in CoL sp. nov.

Figs. 2–7 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 .

Adult habitus ( Fig. 2 View FIGURE 2 ). Body color mostly dark brown. Head subquadrate; triocellate, anterior ocellus smaller than posterior ones; area between each posterior ocellus and compound eye with a pale spot; M-line pale; posterolateral areas of head pale and rugose. Antenna dark and slender, subequal in length to the abdomen. Pronotum oval, mostly black with pale lateral margins, covered with rugosities. Wing membrane mostly dark brown except for the pale costal area, veins dark. Legs mostly dark brown. Cercus pale, covered with long bristles.

Male ( Figs. 2–5 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 ). Body length ca. 14.0 mm. Abdominal segments mostly dark brown. Posterior margins of terga 7–9 pale. Tergum 10 with an anterior pair of median sclerites forming an inverted V-shape; a pair of weakly sclerotized triangular spines present on each side of epiproct sclerite, and a pair of blunt, dark projections on posterior margin of tergum 10 lateral to epiproct sclerite. Epiproct sclerite V-shaped, arms thick and apically pointed outwards, base widened and fusiform. Paraprocts long conical, with blunt apices. Sternum 9 with dark brown posterior margin; hammer large, transversely oval, medially with a sparse patch of sensilla basiconica. Aedeagus incompletely everted but entirely membranous, apparently with three finger-shaped apical lobes; dorsal surface with a V-shaped concavity, ventral surface with a narrow median groove.

Female ( Fig. 6 View FIGURE 6 ). Body length ca. 20.0 mm, body color and head pattern identical to the male. Subgenital plate originating from anterior half of sternum 8, basal half with parallel lateral margins, apical half near trapezoidal, apex slightly notched, reaching half-length of sternum 10.

Type material. Holotype: male, China: Zhejiang Province, Quzhou City, Shuimenjian ( Fig. 7 View FIGURE 7 ), 28.76842255°N, 118.93807864°E, 620 m, leg. Xiao-Han Ye (ICJUST) GoogleMaps . Paratype: one female, same locality and date as holotype (ICJUST).

Etymology. The species is named after Mr. Xiao-Han Ye, who collected the specimens.

Diganosis. The new species is apparently different from K. albopila , which has a small hammer ( Fig. 8A, B View FIGURE 8 ; see figs. 7, 8 in Wu 1948). In K. bifurcata , the tergal spines of tergum 10 are bifurcate and the epiproct sclerite has slender arms (see fig. 1 in Stark & Sivec 2008), whereas K. yexiaohani has unforked tergal spines and thick epiproct sclerite arms. In K. bilobata , the tergal spines are short, pointed inwards and the epiproct sclerite has slender arms (see fig. 2c in Mo et al. 2019), but K. yexiaohani has long triangular tergal spines and thick epiproct sclerite arms. In K. chekiangensis , the epiproct sclerite has very slender arms and the female subgenital plate is abruptly constricted at posterior half ( Fig. 8 View FIGURE 8 C–E; see figs. 154, 157 in Wu 1938), whereas in K. yexiaohani , the epiproct sclerite arms are thick and the female subgenital plate is broad at the posterior half. Kiotina chiangi also has a tiny hammer ( Fig. 8F View FIGURE 8 ; see fig. 85 in Banks 1939), apparently different from the large oval hammer in K. yexiaohani . In K. collaris , the epiproct sclerite has nearly parallel lateral margins and a shallow anterior notch (see fig. 5 in Stark & Sivec 2008), whereas in K. yexiaohani , the epiproct sclerite has two out-curved arms and a deep anterior notch; the subquadrate female subgenital plate of K. collaris also differs from the sub-trapezoidal one in K. yexiaohani (see fig. 8 in Stark & Sivec 2008). Epiproct sclerite of K. yexiaohani is similar to that of K. delicata , however, the tergal spines and hammer of K. yexiaohani are much larger than K. delicata ; shapes of aedeagi of the two species are also apparently different (see figs. 17–19 in Stark & Sivec 2008). The female subgenital plate of K. yexiaohani is similar to that of K. nigra , but the epiproct sclerite of K. yexiaohani has much longer and out-curved arms, which are short and near parallel in K. nigra ( Fig. 8 View FIGURE 8 G–I; see figs. 158–161 in Wu 1938). In K. quadrituberculata known from Fujian Province, the head is entirely brown; the tergal spines on tergum 10 are small and triangular, near ⅓ of the epiproct sclerite; the epiproct sclerite has short and unmodified arms shorter than half of epiproct sclerite, the basal stem is quadrate; the hammer has a width longer than twice of its length ( Wu 1948, Stark & Sivec 2008). However, in K. yexiaohani , the head has distinct pale spots lateral to the ocelli; the tergal spines on tergum 10 are long triangular, near half of the length of epiproct sclerite; the epiproct sclerite has long and apically out-curved arms longer than half of epiproct sclerite, the basal stem is widened and transversely fusiform; the hammer has a width shorter than 1.5X of its length. In K. resplendens , the male terminalia is poorly described, but the female subgenital plate is distinctly enlarged at posterior half ( Fig. 8L View FIGURE 8 ; see fig. 74 in Banks 1939), differed in shape from that of K. yexiaohani .