Symploce nigra Jin and Che, 2022

Jin, Duting, Zhao, Qiongyao, Han, Wei, Li, Jinxiang, Wang, Zongqing & Che, Yanli, 2022, Molecular data resolving the systematics of the related Blattellidae genera Symploce, Episymploce, and Blattella (Blattodea: Blaberoidea), Arthropod Systematics & amp; Phylogeny 80, pp. 187-208 : 187

3.2.7. Symploce nigra Jin and Che sp. nov.

Fig. 4

Type material.

Holotype: CHINA • ♂; Hainan Prov., Ledong County, Mt. Jianfengling; 26-28 June 2014; Bing Liu leg.; light traps. Paratypes: CHINA • 2 ♂♂, same data as for holotype.

Measurements (mm).

Overall length: ♂ 21.5; pronotum length × width: ♂ 4.6 × 6.0; tegmina: ♂ 18.5.

Description.

Male. Coloration: Body chestnut brown (Fig. 4A, B ). Vertex black, lower half of face chestnut brown. Ocelli milky. Base of antenna yellowish brown, the rest dark brown (Fig. 4C ). Maxillary palps brown (Fig. 4E ). Pronotum chestnut brown, posterior and narrow lateral borders shiny black (Fig. 4D ). Tegmina anterior edge black, the rest blackish brown (Fig. 4H ). Legs with tibiae and tarsi dark brown, remainder chestnut brown (Fig. 4B ). Head: Interocular space shorter than the distance between ocelli and slightly less than the width of an antennal socket. Third maxillary palpomere as long as the fourth, slightly longer than the fifth (Fig. 4E ). Posterior margin of pronotum slightly convex (Fig. 4D ). Tegmina and hindwings: Both fully developed, extending beyond the end of abdomen (Fig. 4H, I ). Hind wings with RP branched after the midpoint, the apical region of M with a bifurcation, CuA slightly curved with 5 complete and 3 incomplete branches (Fig. 4I ). Legs: Front femur Type A3 (Fig. 4F ), pretarsal claws symmetrical and unspecialized, pulvillus present. Abdominal tergites: T1 specialized as a ridge scattered with a cluster of setae. T7 also specialized with a pair of unobvious fossae in the middle (Fig. 4G ). T10 symmetrical, posterior margin rounded. Paraprocts: Dissimilar, the right one bifurcate with one apex enlarged, left one with a curved finger-like process (Fig. 4J ). Subgenital plate: Slightly asymmetrical, middle part of posterior margin distinctly convex with tiny bristles, two styli similar and cylindrical with tiny bristles; right middle area with a large spine-like protrusion pointed to supra-anal plate (Fig. 4N ). Male genitalia: L3 on the left side and the apex with an incision (Fig. 4K ); L2vm rod-like, the apex acute (Fig. 4L ); R3 complex, a part of the sclerites rake-shaped (Fig. 4M ). - Female. Unknown.

Etymology.

The Latin word niger, meaning black, refers to the posterior and lateral border areas of pronotum being black.

Remarks.

Symploce nigra Jin and Che sp. nov. is similar to Centrocolumna evidens comb. nov. in general morphology, however, they can be distinguished by the following characteristics: 1) pronotum of the former chestnut brown, posterior and narrow lateral borders shiny black, but lateral region of the pronotum of the latter species yellowish brown with dark U-shaped maculae at disc; 2) supra-anal plate of the former specialized with setal tuft near the posterior margin, but the latter without; 3) two styli similar and cylindrical, both situated at the posterior margin of subgenital plate, while the right stylus of the latter, arising at the protrusion of subgenital plate.

Distribution.

China (Hainan).

Figures

Figure 4. Symploce nigra sp. nov., male: A holotype, dorsal view; B holotype, ventral view; C head, ventral view; D pronotum; E maxillary palp; F front femur, ventral view; G seventh abdominal tergite; H tegmen; I wing; J supra-anal plate, ventral view; K left phallomere; L median phallomere; M right phallomere; N subgenital plate, dorsal view. Scale bars: 10 mm (A, B), 1 mm (C, D), 2 mm (H, I), 0.5 mm (E-G, J-N).