Margattea deltodonta 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 deltodonta J-J He & Z-Q Wang sp. nov. Figure 4A-N

Type material.

Holotype: China • ♂; Hongqi Reservoir, Mt Dawei, Pingbian County, Yunnan Province; 1550 m, 15-V-2016; Lu Qiu, Zhi-Wei Qiu leg; SWU-B-EC141501. Paratypes: China • 3♂♂; same data as holotype; SWU-B-EC141502-141504.

Other material.

China • 1♂; Hongqi Reservoir, Mt Dawei , Pingbian County, Yunnan Province; 1550 m; 17-V-2016; Lu Qiu, Zhi-Wei Qiu leg.

Diagnosis.

This species is similar to M. satsumana (Asahina, 1979) in general appearance, but can be differentiated from the latter by the following characters: 1) median phallomere slender rod with base sharp, and apex expanded with three spines; while in the latter, base slightly expanded, and apex curved with some short spines; 2) subgenital plate not folded; while in the latter, folded inwards.

Measurements

(mm). Male (n = 4), pronotum: length × width 1.6-2.1 × 2.6-2.9, tegmina length: 10.3-11.2, overall length: 12.5-13.1.

Description.

Male. Coloration: body yellowish-brown (Fig. 4A, B ). Face pale yellowish-brown. Interocular space with a dark brown band. Ocelli spots white, interocellar space with a brown band. Antennae dark linen. Clypeus medium yellowish-brown (Fig. 4C ). Maxillary palps dark yellowish-brown (Fig. 4E ). Pronotal disc yellowish-brown with brown stripes and spots, and two lateral borders light brown (Fig. 4D ). Tegmina medium brown, wings light linen (Fig. 4F, G ). Abdomen yellowish-brown (Fig. 4B ). Cerci dark yellowish-brown (Fig. 4K ). Styli faint yellow (Fig. 4M ). Head: vertex slightly exposed, interocular distance same length as antennal sockets space (Fig. 4C ). Pronotum nearly trapezoidal, broader than long, the widest part after the midpoint, the front and posterior margins nearly straight, and the postero-lateral angle blunt and round; the disc with symmetrical irregular macules (Fig. 4D ). The third and fourth palpi about same length, both obviously longer than the fifth, the fifth obviously expanded (Fig. 4E ). Tegmina and wings: tegmina and wings fully developed, both extending beyond the end of abdomen (Fig. 4A, 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 four complete branches (Fig. 4F, G ). Legs: anteroventral margin of front femur type B2 (Fig. 4H ). Pulvilli present on four proximal tarsomeres. Tarsal claws symmetrical and specialized, inner margin serrated, arolia present (Fig. 4I ). Abdomen and genitalia: eighth abdominal tergum specialized with a tuft (Fig. 4J ). Supra-anal plate transverse, posterior margin convex, the middle slightly concave. Paraprocts simple, similar, splitting into two pieces, apex with tufts (Fig. 4K ). Subgenital plate asymmetrical, both lateral margins slightly concave. Styli similar, slender with spines; interstylar region obviously convex with small spines (Fig. 4M ). Left phallomere complex, irregular bone-shaped, with two short spines (Fig. 4L ). Median phallomere slender rod-shaped with base sharp, and apex expanded with three long spines; the accessory structure arched, at rightmost end brush-shaped (Fig. 4M ). Hook phallomere on the right side, apex curved inwards with a short spine (Fig. 4N ).

Female unknown.

Etymology.

The word “delt” and “odont” from Greek and means triangular, the species name " deltodontus " refers to the posterior margin of subgenital plate with small spines.

Distribution.

China (Yunnan).

Figures

Figure 4. A-N Margattea deltodonta sp. nov., male A holotype, dorsal view B holotype, ventral view C head, ventral view D pronotum, dorsal view E maxillary palpi, 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).