Balta yaoi, Qiu, Zhi-Wei, Che, Yan-Li, Zheng, Yu-Hong & Wang, Zong-Qing, 2017

Qiu, Zhi-Wei, Che, Yan-Li, Zheng, Yu-Hong & Wang, Zong-Qing, 2017, The cockroaches of Balta Tepper from China, with the description of four new species (Blattodea, Ectobiidae, Pseudophyllodromiinae), ZooKeys 714, pp. 13-32 : 21-24

Balta yaoi sp. n. Figs 7-8, 52-63

Type material.

Holotype: China, Yunnan: male (IESWU), Xishuangbanna, Menglun, 2010, coll. Zhiyuan Yao. Paratypes: 4 males, same collection event as holotype; 14 males and 22 females, Xishuangbanna, Menglun, garbage dump, 627 m, 21°54.380′N, 101°16.815′E, 23 November 2009, coll. Guo Tang and Zhiyuan Yao; 3 males, Xishuangbanna, Menglun, 2010, coll. unknown;

Differential diagnosis.

This species is similar to B. valida comb. n. in appearance, but can be distinguished in the following characteristics: 1) For the former, median phallomere appendage without brush-like structure (Fig. 62), while in the latter with brush-like structure; 2) subgenital plate with hind margin curved concave (Fig. 60), while in the latter not concaved medially.

Description male. Body yellowish brown (Figs 7, 8). Vertex slightly yellow, between eyes with a slightly brown stripe, under the stripe with a slightly brown triangular spot, under antennal sockets with or without a stripe (Fig. 52). Disk of pronotum yellowish brown, with some small scattered and symmetrical blackish brown spots, two lateral border hyaline (Fig. 54). Tegmen yellowish brown, with a few small round black spots, cell with yellowish brown spots. The lateral border of abdomen with round blackish brown spots. Third and fourth maxillary palpomeres nearly same length, longer than the fifth (Fig. 53). Tegmen with M and CuA oblique (Fig. 55). Hind wing with M simple, without branches, CuA with three complete branches and without incomplete ones, hind wing with small apical triangle (Fig. 56). Front femur Type C2 (Fig. 57), tarsal claws strongly asymmetrical and unspecialized (Fig. 58). Abdominal tergites unspecialized.

Male genitalia. Supra-anal plate short, hind margin finely rounded, right and left paraprocts slightly unsymmetrical (Fig. 59). Subgenital plate with hind margin strongly emarginated, styli located on the apex of each lateral lobe respectively and slightly curved laterally (Fig. 60). Hook-like phallomere on the right side and with preapical concavity (Fig. 61). Median phallomere sticklike, slightly curved, apex acuminate, median phallomere appendage arched (Fig. 62). Left phallomere complex, without brush-like structure (Fig. 63).

Female. Both tegmina and hind wings slightly beyond the end of abdomen. The end of abdomen rounded.

Measurements (mm).

Overall length of male 12.0-13.0, female 10.0-10.3; tegmen length male 10.0-11.0, female 7.9-8.0; pronotum length × width male 2.3-2.6 × 3.4-3.6, female 2.2-2.5 × 2.8-3.0.

Etymology.

This species is named in honor of Mr. Zhiyuan Yao, who collected the holotype of the species.

Distribution.

China (Yunnan).