Two new genera (Vittiblatta gen. nov. and Planiblatta gen. nov.) of Blattinae (Blattodea, Blattidae) from Southwest China and the discovery of chirally dimorphic male genitalia in Vittiblatta punctata sp. nov. Author Luo, Xin-Xing https://orcid.org/0009-0000-6838-1696 College of Plant Protection, Southwest University, Beibei, Chongqing 400715, China Author Deng, Wen-Bo https://orcid.org/0000-0001-5796-241X College of Plant Protection, Southwest University, Beibei, Chongqing 400715, China Author Che, Yan-Li https://orcid.org/0000-0003-3214-9494 College of Plant Protection, Southwest University, Beibei, Chongqing 400715, China Author Wang, Zong-Qing https://orcid.org/0000-0001-9413-1105 College of Plant Protection, Southwest University, Beibei, Chongqing 400715, China zqwang2006@126.com text ZooKeys 2023 2023-12-28 1187 401 421 http://dx.doi.org/10.3897/zookeys.1187.113403 journal article http://dx.doi.org/10.3897/zookeys.1187.113403 1313-2970-1187-401 91B4F76CD3894BE58AD07E3C82B75052 331A59CAD9185E36B059921AFDF9F77C Vittiblatta undulata Luo & Wang sp. nov. Figs 5 , 7 (in part) Type materials. Holotype : China • ♂; Yunnan, Nabang Town, Yingjiang County, Dehong Dai and Jingpo Autonomous Prefecture; 282 m alt.; 11-13.VII.2012; collector unknown; SWU-B-BL-081901. Paratype : China • 1♂; Yunnan, Nabang Town, Yingjiang County, Dehong Dai and Jingpo Autonomous Prefecture; 252 m alt.; 4.VI.2018; Lu Qiu & Wenbo Deng leg.; SWU-B-BL-081902. Diagnosis. Combining the following characteristics, this species is easily distinguished from other species of this genus: 1) body yellowish brown; 2) hind margin of subgenital plate wavy; 3) male genitalia L2 without spine at end, only a small protuberance; 4) the distal part of R1H broad, slightly sclerotized and hyaline, the end with an elongate and curved spine inward. Description. Coloration . Body yellowish brown; ocelli white; hind margin of subgenital plate nearly brown (Fig. 5A, B ). Male (Fig. 5A, B ). Body length including tegmen: 30.5-32.7 mm; body length: 27.1 mm; pronotum length x width: 6.2-6.6 mm x 7.7-8.2 mm; tegmina length x width: 24.9-25.4 mm x 8.0-8.2 mm. Head and thorax . Vertex unexposed. Interocular space slightly wider than the interocellar space, shorter than the distance between antennal sockets (Fig. 5C ). Antennae longer than the body. Pronotum subelliptical; anterior margin straight, hind margin slightly convex; the widest point near the midpoint (Fig. 5D ). The posterior-lateral angles of metanotum with symmetrical and small projections (Fig. 5E ). Tegmina and wings well developed, surpassing the tip of abdomen (Fig. 5A, B, G, H ). Tegmina with ScP strong, posterior branch of R not reaching the end of tegmina (Fig. 5G ). Front femur of type A2 (Fig. 5F ). Mid- and hind legs with strong spines. Hind metatarsus longer than the remaining segments combined. Pulvilli present on 1-4 tarsal segments, claws symmetrical and unspecialized, arolium small (Fig. 7C ). Abdomen . First tergite of male abdomen with visible gland, setose gland curved, and directed toward left, right, and down (Fig. 5E ). Supra-anal plate rectangular, lateral margin slightly shrunken inward; middle part of hind margin concave. Paraprocts (pp.) long, strip-shaped. Cerci robust (Fig. 5I ). Subgenital plate nearly square; the hind margin wavy. Styli symmetrical and apically rounded (Fig. 5K ). Genitalia (Fig. 5J ). L1 membranous with pubescence. L4C thin and ribbon-like, the inner margin with a long projection of densely microtrichia. L2 irregular, the distal part with a small projection. L3 unciform and well sclerotized, the basal part bifurcated. The distal part of R1H broad, slightly sclerotized and hyaline, the end with an elongate and curved spine inward. The distal part of R1G with a curved, strong spine inward. Figure 5. Vittiblatta undulata Luo & Wang, sp. nov. A-K male holotype A habitus, dorsal view B habitus, ventral view C head D pronotum E hind margin of metanotum and tergal gland F front femur G tegmen H hind wing I supra-anal plate, ventral view J male genitalia, dorsal (left) and ventral view (right) K subgenital plate, dorsal view. Scale bars: 10.0 mm ( A, B, G, H ); 2.0 mm ( C, D ); 1.0 mm ( E, F, I-K ). Female. Unknown, possibly brachypterous. Etymology. The species epithet is from the Latin word " undulata ", in reference to the way hind margin of subgenital plate. Distribution. China (Yunnan).