Chelisoches chongqingensis Ye & Chen, 2020

Ye, Xiao-Han, Gu, Jun, Zhang, Mei & Chen, Zhi-Teng, 2020, Description of Chelisoches chongqingensis sp. nov. (Dermaptera: Chelisochidae) and redescription of Platylabia major Dohrn, 1867 from China, Zootaxa 4790 (3), pp. 551-563 : 552-557

publication ID	https://doi.org/ 10.11646/zootaxa.4790.3.9
publication LSID	lsid:zoobank.org:pub:81A544EA-42EF-410D-A6A4-4543D1C8A175
DOI	https://doi.org/10.5281/zenodo.10564156
persistent identifier	https://treatment.plazi.org/id/1965866A-D53E-6169-FF60-F1F5BE984E55
treatment provided by	Plazi
scientific name	Chelisoches chongqingensis Ye & Chen
status	sp. nov.

Treatment

Chelisoches chongqingensis Ye & Chen View in CoL sp. nov.

Figs. 1–9 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

Male ( Figs. 1–5 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 ). Body length 16.0 mm from anterior margin of head to posterior margin of abdominal segments; cerci length 8.0 mm ( Fig. 1 View FIGURE 1 ). Head ( Fig. 2A, B View FIGURE 2 ) reddish-yellow, epicranial suture distinct; compound eyes small and dark, each with a small pit on inner side. Antennae 17-segmented, basal segment long; segment 2 as wide as its length; segment 3 three times longer than segment 2, covered with a few setae; length of segment 4 nearly two-thirds that of segment 3; segments after the third gradually prolonged and covered with dense setae; segments 10 and 15 pale ( Fig. 1 View FIGURE 1 ). Pronotum dark with metallic luster, anterior margin straight with a median expansion, posterior and lateral margins forming a wide arc, covering the scutellum; two rounded humps present lateral to the median suture. Elytra well-developed, dark with distinct metallic luster, length about twice the width, lateral margins arc-shaped, posterior margins truncate ( Fig. 2A View FIGURE 2 ). Scales of hindwings short and trapezoidal, posterior margins truncate, color similar to elytra but posteromedial corners pale ( Fig. 2A View FIGURE 2 ). Legs ( Figs. 2B, C View FIGURE 2 ) strong, femur and base of tibia dark brown, apical half of tibia and tarsus pale; hind tibia apically with a deep lateral groove; tarsal segments hairy, first segment and third segment long; second segment very short, the tarsal projection only reaching basal one-fourth of third segment. Abdomen brown; tergum 3 with two small glandular folds, tergum 4 with two glandular folds; last dorsal segment with parallel lateral margins, posterior margin sub-trapezoidal and slightly concave medially, with two large lateral lobes and two smaller median lobes. Subgenital plate broad and oval, posterior margin with a shallow median concavity. Pygidium short but wide, lateral margins concave, posterolateral corners projected into two obtuse lobes. Forceps ( Fig. 3 View FIGURE 3 ) long and incurved, basally broad and apically sharp; inner margin of basal sixth and apical sixth glabrous, remainder with small teeth. Genitalia ( Figs 4 View FIGURE 4 , 5 View FIGURE 5 ) long, slightly constricted at apical third; paramere long, hook-shaped, apically constricted into a long spine; penis lobe movable; basal vesicle sclerotized with two parts, one larger and denticulate, the other smaller.

Female ( Figs. 6–8 View FIGURE 6 View FIGURE 7 View FIGURE 8 ). Body length 16.0 mm; cerci length 5.0 mm. Generally similar to male ( Figs. 6 View FIGURE 6 , 7 View FIGURE 7 ); apex of antennal segment 10 and segments 11, 12 and 17 pale ( Fig. 6 View FIGURE 6 ). Last dorsal abdominal segment slightly narrowed caudally, posterolateral corners abrupt, posterior margin with two large humps ( Fig. 6A View FIGURE 6 ). Subgenital plate oval, posterior margin without median concavity. Pygidium two times longer than wide, basal fourth wide and nearly trapezoidal, apical three-fourths constricted at base, then gradually widened to apex; posterior margin of pygidium with a shallow V-shaped notch ( Fig. 8 View FIGURE 8 ). Forceps shorter and thicker than the male, space between forceps narrower than male ( Fig. 8 View FIGURE 8 ).

Type material. Holotype: male, China: Chongqin City , Simian Mountain, Feilong Temple, in surrounding lush vegetation ( Fig. 9A View FIGURE 9 ), 28.62 N, 106.39 E, 1000 m, June 1–2, 2019, Chen Xu (ICJUST) GoogleMaps . Paratypes: 1 male and 2 females, same locality and data as holotype (ICJUST) GoogleMaps ; 1 female, China: Chongqin City , Jinfo Mountain, lush vegetation along the main road ( Fig. 9B View FIGURE 9 ), 29.12 N, 107.17 E, 1600 m, June 3–4, 2019, Chen Xu (ICJUST) GoogleMaps .

Etymology. The species is named for the type locality, Chongqin City.

Remarks. The new species is assigned to genus Chelisoches based on the lateral groove on the hind tibia, shorter antennal segments 4 and 5 than segment 3, and the similarity of the penis with the type species C. morio (Srivastava 2003, Chen & Ma 2004). The type locality, Chongqin City, is distant from the localities of other Chelisoches spp. Chelisoches chongqingensis sp. nov. is characterized by the following characters: forceps of the male slender and without large teeth, forceps of the female strong and with small inner teeth ( Dubrony 1879, Burr 1917, Günther 1934, Chen & Ma 2004). The pygidium of the male is similar to other species in the Oriental region, but the pygidium shape of the female is distinctly diagnostic and can easily separate C. chonqingensis n. sp. from other species.