Diploptera naevus, Li & Wang, 2015

Li, Xinran & Wang, Zongqing, 2015, A taxonomic study of the beetle cockroaches (Diploptera Saussure) from China, with notes on the genus and species worldwide (Blattodea: Blaberidae: Diplopterinae), Zootaxa 4018 (1), pp. 35-56 : 46-47

Diploptera naevus sp. n.

( Figs. 9 , 25–26 , 42–47 )

Female unknown.

Diagnosis. D. naevus sp. n. can be easily distinguished by combining the protruding posterolateral angles of pronotum and the dorsal overall color pattern, which consists of an orangish background, a black mesonotal bump and a black disc of pronotum, whilst D. bicolor has a similar color pattern but differs in the pronotum without the posterolateral angles.

Description. Holotype, male, size small, body length (= overall length) 10.0mm; pronotum length×width 2.8mm × 4.5mm; tegmen length 7.1mm; wing length 11.6mm.

Body blackish brown. Antenna with basal one-third blackish and apical two-thirds brownish; apical part of clypeus and basal part of labrum yellowish brown. Pronotum with disc blackish, extremely narrow anterior border dark orange, wide lateral borders orangish, and with a dark orange dot at the middle of posterior margin ( Fig. 9 ); mesonotal bump black. Tegmina orangish, but looking darker because of the color of abdomen. Spines of legs brownish yellow. Apical part of cerci and the whole styli yellowish brown.

Pronotum and tegmina setose. Pronotum subsemicircular, with posterior margin emarginate near posterolateral angles, anterior margin slightly uplifted and lateral borders subsided. Tegmina punctate and setose, extending exactly to the end of abdomen, but appearing to exceed it in the photo because the abdomen of the specimen is retracted. Venation of hindwings similar to that of D. punctata , but with AP1 and AP2 weak at tfd, not reaching the outer margin.

Subgenital plate relatively broad at sides. Styli large, exceeding the hind margin of subgenital plate when pointing rear. Sclerite L3’ with basal part broad and the curved part narrow, protrudent at the inner margin; the apex of hook normal.

Distribution. China (southeast of Xizang Autonomous Region).

Etymology. Latin word naevus means “birthmark or nevus”, referring to the blackish stain on pronotum resembling a birthmark on the orangish overall appearance.

Type material examined. HOLOTYPE ( IESWU), male, China, Xizang, Motuo , Beibeng , 850m, 1983. V.27, coll. Yin-Heng Han.

Figures

FIGURES 2 – 16. Pronota of Diploptera spp. & subspp. presented in monochrome, i. e., white indicates unicolor or lighter coloration, whilst black is for darker portion. 2 – 3 D. punctata; 2 male; 3 female; 4 – 5 D. minor; 4 female; 5 male; 6 D. erythrocephala, male; 7 – 8 D. parva; 7 male; 8 female; 9 D. naevus sp. n., male; 10 D. nigrescens nigrescens, male; 11 – 12 D. nigrescens guani subsp. n.; 11 male; 12 female; 13 D. bicolor, male; 14 D. maculata, female; 15 – 16 D. elliptica sp. n.; 15 male; 16 female. (Dashed lines indicate depression. Scale bar = 2 mm)

FIGURES 17 – 30. Diploptera spp. & subspp. distributed in China. 17 – 18 D. punctata, female from Yunnan, Menglun; 19 – 21 D. punctata, lectotype (ZMMU) from Hawaii instead of China, photographed by Dr. Andrey L. Ozerov, copyright ZMMU, published with permission; 22 – 24 D. elliptica sp. n.; 22 – 23 male holotype from Yunnan, Cangyuan, Banhong; 24 female paratype from Yunnan, Mengla, Mohan; 25 – 26 D. naevus sp. n., male holotype from Xizang, Motuo, Beibeng; 27 – 28 D. nigrescens guani subsp. n., male holotype from Guangxi, Chongzuo, Daqingshan; 29 – 30 D. nigrescens nigrescens, male syntype (NTU) from Taiwan, photographed by Yi-Ho Liu and downloaded from NTU website, copyright Insect Museum Digital Archives Project, Department of Entomology, National Taiwan University. (Scale bars = 5 mm.)

FIGURES 42 – 47. Diploptera naevus sp. n., holotype. 42 hind wing, with grey coloration indicating sclerotization; 43 terminal segment of dorsal abdomen, in ventral view; 44 subgenital plate in dorsal view; 45 – 47 phallic sclerites in dorsal view; 45 sclerites R’; 46 sclerites L 2 ’; 47 apex of left complex hook, showing sclerite L 3 ’. (m. = membranous. Scale bars = 5 mm for 42, 1 mm for 43 & 44, 500 µm for 45 – 47.)