Allacta hemiptera Li & Wang, 2024

Li, Bian-Lun, Hu, Peng-Hui, Guo, Lin, Che, Yan-Li & Wang, Zong-Qing, 2024, Discovery of five new species of Allacta from Yunnan and Hainan, China (Blattodea, Pseudophyllodromiidae), ZooKeys 1191, pp. 1-21 : 1

Allacta hemiptera Li & Wang sp. nov.

Fig. 6A-O

Temnopteryx hainanensis Liu et al., 2017: 179 (nomen nudum); Qin and Liu 2019: 175.

Allacta hainanensis : He et al. 2019: 8.

Type material.

Holotype: China • male (SWU); Hainan Prov., Ledong County, Mount Jianfeng; 997 m; 16 Apr., 2015; Lu Qiu leg. Paratypes: China • 1 male (SEM); Hainan Prov., Changjiang County, Mount Bawang; 1495 m; 22 Sep., 2011; Xian-Wei Liu leg • 1 male (SWU); Hainan Prov., Ledong County, Mount Jianfeng; 1050 m; 6 Jul., 2007; Wei-Wei Zhang leg • 1 female (SWU); Hainan Prov., Ledong County, Mount Jianfeng; 997 m; 16 Apr., 2015; Lu Qiu leg • 3 males & 5 females (SWU); Hainan Prov., Qiongzhong County, Limushan Stone Forest; 585 m; 12 Jul., 2023; Wen-Bo Deng leg • 3 females (SWU); Hainan Prov., Qiongzhong County, Quling Valley; 662 m; 11 Jul., 2023; Yi-Shu Wang leg.

Diagnosis.

This species resembles A. redacta , but it can be differentiated from A. redacta mainly by the pronotal disk with a nib-shaped yellowish spot.

Measurements

(mm). Male, pronotum length × width: 4.3-4.6 × 6.9-7.4, tegmina length: 5.5-5.7, overall length: 17.0-17.2; female, pronotum length × width: 4.0-4.4 × 6.5-7.4, tegmina length: 5.3-5.8, overall length: 16.9-17.2.

Description.

Male. Body dark brown (Fig. 6A, B ). Face brown with dark brown stipples and spots in the middle (Fig. 6D ). Antennae brown. The fifth maxillary palpi brown, the rest yellowish brown. Lateral borders and front margin of pronotum translucent yellowish; a nib-shaped yellowish spot in the middle (Fig. 6C ). Tegmina brown, lateral borders translucent (Fig. 6I ). Legs yellowish brown. Cerci yellowish brown, with basal dark brown (Fig. 6L ).

Vertex with interocular space obviously narrower than distance between antennal sockets (Fig. 6D ). The third and fourth maxillary palpi of approximately same length, slightly longer than the fifth (Fig. 6E ). Pronotum nearly triangle with front margins blunt round and hind margins truncated (Fig. 6C ). Tegmina and hind wings reduced. Tegmina nearly quadrilateral, veins not obvious. Hind wings small, thin and transparent, about half the length of tegmina (Fig. 6I, J ). Anteroventral margin of front femur Type B3 (Fig. 6F ). Pulvilli only present on the fourth tarsomere. Tarsal claws symmetrical and unspecialized, arolium present (Fig. 6G ).

Male abdomen and genitalia. Abdominal terga unspecialized. Supra-anal plate short, nearly triangular, symmetrical, with incision at the middle of hind margin. Paraprocts simple and plate-like, with scattered setae on distal margin (Fig. 6L ). Subgenital plate symmetrical, lateral margins round and styli nearly cylindrical, arising from the posterior margin concavities, right stylus slightly larger than the left, interstylar margin with W-shaped notch (Fig. 6K ). Left phallomere complex (Fig. 6M ). Median phallomere (L2vm) stem slender, rod-like, apex sharp, with a crack at quarter from base; median phallomere subsidiary sclerite (R3) C-shaped rod-like (Fig. 6N ). Hooked phallomere (R2) on the right of subgenital plate, with V-shaped incision (Fig. 6O ).

Female genitalia. Supra-anal plate nearly symmetrical. Paraprocts broad, not extending to the posterior margin of supra-anal plate. Intercalary sclerite irregular plate-shaped and translucent. First valves robust, with inward protrusions. Second valves small. Third valves symmetrical and broad rod-shaped. The anterior margin of anterior arch slightly sclerotized. First valvifer irregular swollen and oval with short setae on the inside. Basivalvula oval-shaped. Laterosternal shelf symmetrical, broad and trapezoid. Front margin of spermathecal plate truncated. The spermatheca lobe forked, the end of one spermatheca branch enlarged, and the other long and tubular (Fig. 6H ).

Remarks.

According to the International Code of Zoological Nomenclature (Article 16.4.2) (ICZN 1999), Temnopteryx hainanensis Liu et al., 2017 is invalid. He et al. (2019) did not realize that and moved Temnopteryx hainanensis to the genus Allacta . We here describe it as a new species based on the new material and the type specimens of Temnopteryx hainanensis Liu et al., 2017.

Etymology.

The Latin terms hemi - means half, ptera means wing, and hemiptera means that the tegmina is half the normal wing length.

Distribution.

China (Hainan).

Figures

Figure 6. Allacta hemiptera sp. nov., male holotype A dorsal view B ventral view C pronotum, dorsal view D head, ventral view E maxillary palpi, ventral view F front femur, ventral view G tarsus and tarsal claws of front leg H female subgenital plate, dorsal view I tegmen, dorsal view J hind wing, dorsal view K subgenital plate, dorsal view L supra-anal plate and paraprocts, ventral view M left phallomere, dorsal view N median phallomere, dorsal view O hook-like phallomere, dorsal view. Scale bars: 5 mm (A, B); 2 mm (C-I); 1 mm (J-O). Abbreviations: a. a. anterior arch, bsv. basivalvula, intc. s. intercalary sclerite, ltst. sh. laterosternal shelf, pp. paraprocts, pt. paratergites, sp. pl. spermathecal plate, vlf. I first valvifer, v. I first valves, v. II second valves, v. III third valves.