Allacta alba, He, Jia-Jun, Zheng, Yu-Hong, Qiu, Lu, Che, Yan-Li & Wang, Zong-Qing, 2019

He, Jia-Jun, Zheng, Yu-Hong, Qiu, Lu, Che, Yan-Li & Wang, Zong-Qing, 2019, Two new species and a new combination of Allacta (Blattodea, Ectobiidae, Pseudophyllodromiinae) from China, with notes on their behavior in nature, ZooKeys 836, pp. 1-14 : 4-6

Allacta alba sp. n. Figs 13-24

Type material.

Holotype: male, CHINA, Zhejiang Province, Longtangshan, Qingliangfeng, 960 m, 6-VIII-2011, Jin-Jin Wang leg. Paratype: 1 male, same data as holotype (all in SWU).

Diagnosis.

This species resembles A. xizangensis by the brownish tegmina, which are without distinct strips and spots (Figs 13, 14, 44), and the two small lobes between the styli, but it can be differentiated from the latter by the following characters: 1) pronotum without dark brown strip-like markings, while with dark brown strip-like markings in A. xizangensis ; 2) two styli unequal in size, while styli similar in A. xizangensis ; 3) median phallomere with basal part tapering, while in the latter, blunt and round; and 4) R3 (accessary median phallomere) large, while R3 (accessary median phallomere) somewhat reduced in A. xizangensis .

Measurements (mm).

Male, pronotum: length × width 3.5-4.5, tegmina length: 14.1-14.8, overall length: 15.5-16.1.

Description.

Male. Body yellowish brown with reddish (Figs 13, 14). Vertex brown. Face pale brown. Two spots on inter-antennae space reddish brown (Figs 14, 15). Antennae and maxillary palpi pale brown. Pronotal disc and hind margin reddish brown, lateral borders hyaline. Tegmina and wings pale yellow (Fig. 13). Legs translucent. Abdomen brown. Cerci yellowish brown (Fig. 14).

The distance between compound eyes narrower than that of antennae, ocelli border not obvious (Fig. 15). Curved macula under the antennal sockets. Third, fourth and the fifth maxillary palpi approximately same length (Fig. 17). Pronotum nearly triangular, width greater than length, the front and hind margins nearly straight, the postero-lateral angle blunt and round, and disc with trapezoidal symmetrical white maculae (Fig. 16). Tegmina and hind wings fully developed, both extending beyond the end of abdomen (Fig. 13). Tegmina with M and CuA longitudinal, CuA with four branches (Fig. 19). Hind wings with M straight and simple; CuA with five complete branches (Fig. 20). Anteroventral margin of front femur type B3 (Fig. 18). Pulvilli present only on the fourth tarsomere; tarsal claws symmetrical and unspecialized, arolia present.

Male abdomen and genitalia. Abdominal terga unspecialized. Supra-anal plate nearly triangular, hind margin slightly curled up. Paraproct plates simple (Fig. 21). Subgenital plate slightly asymmetrical, styli short and cylindrical, the right one slightly larger than the left, inter-styli margin concave (Fig. 23). Left phallomere complex, inverted Y-shaped (Fig. 22). Median phallomere stem club-shaped, basal part tapering, accessory median sclerite curved, base and apex all with short setae (Fig. 23). Hook on the right side, with pre-apical incision (Fig. 24).

Remarks.

It can be distinguished from other species in this group by the light-colored pronotum.

Etymology.

The meaning of the Latin word alba is white, referring to the white maculae on the pronotum.

Distribution.

China (Zhejiang).