Kamimuria circumspina, Li & Mo & Yang, 2019

Li, Weihai, Mo, Raorao & Yang, Juan, 2019, An interesting new species of Kamimuria (Plecoptera: Perlidae) from China, with notes on K. grandispinata Du & Sun, Zootaxa 4700 (1), pp. 139-145 : 139-142

Kamimuria circumspina sp. n.

( Figs. 1–2 )

Adult habitus. General color dark brown. Head brown with black pattern ( Fig. 1a ); black ocellar patch subquadrate, blackish M-line extending forward of clypeus, covering frons and extending laterally to antennal base. Antennae brown, pedical dark brown, palpi brownish. Pronotum dark brown with distinct rugosities, anterior and posterior margins and strips along median suture blackish. Legs brown, coxae lighter and joints of femur and tibia darker. Wing membrane brownish with veins dark brown.

Male ( Figs. 1–2 ). Forewing length ca. 18.5 mm. Hemitergal lobe recurved to posterior margin of tergum 9; the lobe in dorsal and lateral views gradually narrowing from base to gently upcurved apex, ventral spinules indistinct ( Figs 1 c–e). Tergum 9 with truncate anterior and posterior margins, mesal sclerite trapezoidal and covering ⅔ length of tergum 9, which is mostly covered by sensilla basiconica. Sensilla basiconica patch on tergum 8 is similar to but smaller than those of tergum 9 with only a few sensilla basiconica on tergum 7 ( Fig. 1c ). Metasternum and sterna 4–7 with patches of setae ( Fig. 1e ).

Aedeagus ( Fig. 2 ). Generally, L-shaped by the ventrally curved apical half, and medially constricted. Basal half with dorsal surface mostly bald but ventral surface mostly covered by brown microtrichia. Distal half with patches of spines of different sizes: basally with a medially interrupted dorsolateral spinous area, each lateral patch consisting of 8-10 irregular rows of small-sized thick spines; subapically with linear large hooks, forming an incomplete ring, the ring ending dorsally but continuing with a pair of strip-like sclerites, the ventral hooks becoming slender on a darkly pigmented mesoventral area.

Female. Unknown.

Type material. Holotype male ( IZCAS): China: Guizhou Province, Shiqian County, Wuling Mountains, Fodingshan Village , 2018.V.4, light trap, 598 m, N 27.3162°, E 108.1347°, Dongkai Zhao.

Etymology. The specific epithet refers to circular arrangement of large subapical hooks near the apex of aedeagal sac ( Figs. 2b, 2f ).

Distribution. The single specimen is known only from the type locality.

Remarks. The male holotype of the new species can be distinguished from all other known species of the genus by the incomplete ring of large hooks at the subapical portion of aedeagal sac. This aedeagus of K. circumspina is reminiscent of several Phanoperla Banks, 1938 species ( Zwick 1982) and more recently by P. hainana Li & Qin, 2016 , from Hainan of China and P. zwicki Mo et al., 2019 from Vietnam. The large spines on the aedeagal armature also occur on K. hainana Li, Wang & Yu, 2012 from Hainan of China, K. grandispinata Du & Sun, 2011 from Guizhou, K. lyubaretzi Teslenko, 2006 from the Russian Far East, and K. zwicki Stark & Sivec, 2008 from the Republic of Korea. However, the spines in those species are neither hook-shaped nor placed linearly to form a ring.

Figures

FIGURE 1. Kamimuria circumspina sp. n. (male). a. Head and pronotum, dorsal view. b. Terminalia before being relaxed, dorsal view. c. relaxed Terminalia, dorsal view. d. Hemitergal lobes, lateral view. e. Hemitergal lobes, oblique lateral view.

FIGURE 2. Kamimuria circumspina sp. n. (everted aedeagus of male). a. Aedeagus, ventral view. b. Aedeagus, lateral view. c. Aedeagus, dorsal view. d. Apex of aedeagus, posterior view. e. Apex of aedeagus, ventral view. f. Aedeagus, ventrolateral view.