Margattea bicruris J-J He & Z-Q Wang, 2021

He, Jia-Jun, Jin, Du-Ting, Wang, Yi-Shu, Che, Yan-Li & Wang, Zong-Qing, 2021, Species delimitation of Margattea cockroaches from China, with seven new species (Blattodea, Ectobiidae, Pseudophyllodromiinae), ZooKeys 1036, pp. 121-151 : 121

Margattea bicruris J-J He & Z-Q Wang sp. nov. Figure 10A-L

Type material.

Holotype: China • ♂; Wangtianshu Scenery Spot, Mengla County, Xishuangbanna Prefecture, Yunnan Province; 23-V-2016; Lu Qiu, Zhi-Wei Qiu leg; SWU-B-EC141601. Paratype: China • 2 ♂♂, same data as for holotype; SWU-B-EC141602-141603.

Diagnosis.

This species is similar to M. brevialata (Caudell, 1927) in male genitalia, but it can be differentiated from the latter by the following characters: 1) median phallomere slender rod, apex forked without spines; while in the latter, one side of splitting apex with 2 long spines; 2) left phallomere without a spine; the latter with a spine; and 3) supra-anal plate symmetrical, the front and the posterior margin straight; while in the latter, posterior margin convex, the middle part concave.

Measurements

(mm). Male (n = 3), pronotum: length × width 2.1-2.2 × 3.0-3.2, tegmina length: 9.9-10.9, overall length: 11.6-12.0.

Description.

Male. Coloration: body pale yellow with yellowish-brown (Fig. 10A, B ). Face pale yellowish-brown. Interocular space with a brown band. Ocelli spots white. Antennae pale yellowish-brown. Clypeus medium yellowish-brown (Fig. 10C ). Maxillary palps light linen-colored (Fig. 10E ). Pronotal disc pale yellowish-brown with yellowish-brown stripes, and two lateral light linen-colored borders (Fig. 10D ). Tegmina light yellowish-brown, wings brownish grey (Fig. 10F, G ). Abdomen cream-colored. Cerci yellowish-brown to pale brown (Fig. 10K ). Styli faint yellow (Fig. 10L ). Head: vertex slightly exposed, distance between interocular shorter than antennal sockets space (Fig. 10C ). Pronotum nearly trapezoidal, broader than long, the widest part after midpoint, front and posterior margins nearly straight, and postero-lateral angle blunt and round; disc with symmetrical irregular stripes (Fig. 10D ). Third and fourth palpi of approximately same length, both obviously longer than fifth palp, fifth palp obviously expanded (Fig. 10E ). Tegmina and wings: tegmina and wings fully developed, both extending beyond the end of abdomen (Fig. 10A, B ). Tegmina with Scp simple, R multi-branched, M straight with five complete branches. Hind wings with ScP and RA expanded at apex; M straight and simple, without branches; CuA with six complete branches (Fig. 10F, G ). Legs: anteroventral margin of front femur type B2 (Fig. 10H ). Pulvilli present on four proximal tarsomeres. Tarsal claws symmetrical and specialized, inner margin serrated, arolia present (Fig. 10I ). Abdomen and genitalia: eighth abdominal tergum specialized with a tuft (Fig. 10J ). Supra-anal plate transverse. Paraprocts simple, similar, splitting into two pieces (Fig. 10K ). Subgenital plate symmetrical. Styli similar, slender, distinctly separated. Left phallomere complex, irregular bone-shaped. Median phallomere slender rod-shaped with apex forked; the accessory structure arched, at leftmost end with a brush. Hook phallomere on right side, apex curved inwards with a short spine (Fig. 10L ).

Female unknown.

Etymology.

The Latin name " Margattea bicruris " refers to the median phallomere having the base forked.

Distribution.

China (Yunnan).

Figures

Figure 10. A-L Margattea bicruris sp. nov., male A holotype, dorsal view B holotype, ventral view C head, ventral view D pronotum, dorsal view E maxillary palpi segments 3 - 5, ventral view F tegmen, dorsal view G hind wing, dorsal view H front femur, ventral view I tarsal claws J eighth abdominal terga K supra-anal plate and paraprocts, ventral view L subgenital plate and phallomeres, dorsal view. Scale bars: 5 mm (A, B); 0.5 mm (C-H, J, K-L); 0.1 mm (I).