Margattea caudata 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 caudata J-J He & Z-Q Wang sp. nov. Figure 6A-N

Type material.

Holotype: China • ♂; Meizihu Reservoir, Pu’er City, Yunnan Province; 1400 m; 21-V-2016; Lu Qiu, Zhi-Wei Qiu leg; SWU-B-EC141301. Paratypes: China • 6♂♂; 1 ♀, same data as holotype SWU-B-EC141302-141308.

Other materials.

China • 2♀♀; Meizihu Reservoir, Pu'er City , Yunnan Province; 1400 m; 20-V-2016; Lu Qiu, Zhi-Wei Qiu leg.

Diagnosis.

This species is similar to M. mckittrickae Wang, Che & Wang, 2009 in general appearance, but it can be differentiated from the latter by the following characters: 1) interstylar region obviously convex, fishtail-shaped, while the latter slightly convex; 2) left phallomere complex, irregular bone-shaped, while in the latter, two sides of left phallomere sheet-like; and 3) median phallomere with one accessory structure, while the latter with two accessory structures.

Measurements

(mm). Male (n = 4), pronotum: length × width 2.7-2.8 × 3.1-3.6, tegmina length: 10.4-12.6, overall length: 12.8-14.1. Female, pronotum: length × width 2.5-3.0 × 3.6-3.7, tegmina length: 9.0-9.1, overall length: 11.7-12.6.

Description.

Male. Coloration: body pale brown with yellowish-brown (Fig. 6A, B ). Face pale yellowish-brown. Interocular space with a brown band. Ocelli spots white, interocellar space with a brown band. Antennae light linen-colored. Clypeus medium yellowish-brown (Fig. 6C ). Maxillary palps dark yellowish-brown (Fig. 6E ). Pronotal disc pale yellowish-brown with brown stripes and two lateral borders light yellowish-brown (Fig. 6D ). Tegmina yellowish-brown and wings medium brown (Fig. 6F, G ). Abdomen pale yellowish-brown. Cerci yellowish-brown (Fig. 6K ). Styli faint yellow (Fig. 6M ). Head: vertex slightly exposed, interocular distance interocular same length as antennal socket space (Fig. 6C ). Pronotum nearly trapezoidal, broader than long, the widest part after the midpoint, the front and posterior margins nearly straight, and postero-lateral angle blunt and round; disc with symmetrical irregular macules (Fig. 6D ). Third and fourth palpi of approximately same length, both obviously longer than the fifth, fifth palp obviously expanded (Fig. 6E ). Tegmina and wings: tegmina and wings fully developed, both extending beyond the end of abdomen (Fig. 6A, 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 7 complete branches (Fig. 6F, G ). Legs: anteroventral margin of front femur type B2 (Fig. 6H ). Pulvilli present on four proximal tarsomeres. Tarsal claws symmetrical and specialized, inner margin serrated, arolia present (Fig. 6I ). Abdomen and genitalia: eighth abdominal tergum specialized with a tuft (Fig. 6J ). Supra-anal plate transverse, posterior margin protruded. Paraprocts similar, splitting into two pieces, apex with tufts (Fig. 6K ). Subgenital plate symmetrical, the middle of front margin slightly concave; the base of two lateral margins concave, apex flips inwards with tufts. Styli similar, slender, distinctly separated; interstylar region obviously convex, fishtail-shaped, middle space slightly concave, two lateral angles convex with short spines (Fig. 6M ). Left phallomere complex, irregular bone-shaped, with short spine (Fig. 6L ). Median phallomere slender rod-shaped, apex splitting into two parts, each with some long spines (Fig. 6M ). Hook phallomere on the right side, apex curved inwards with a short spine (Fig. 6N ).

Female with tegmina and wings slightly reduced.

Etymology.

The latin name " caudatus " meaning “tail”, refers to the fishtail-shaped convexity on interstylar region.

Distribution.

China (Yunnan).

Figures

Figure 6. A-N Margattea caudata 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 left phallomere, dorsal view M subgenital plate and median phallomere, dorsal view N hook-like phallomere, dorsal view. Scale bars: 5 mm (A, B); 0.5 mm (C-H, J, K-N); 0.1 mm (I).