Balta crena, 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 : 16-17

Balta crena sp. n. Figs 1, 2, 15-27

Type material.

Holotype: China, Yunnan: male (IESWU), Xishuangbanna, Menglun Botanical Garden, Lvshilin, 640 m, 21°54.600′N, 101°17.084′E, 17 November 2009, coll. Guo Tang and Zhiyuan Yao. Paratypes: 1 male, same collection event as holotype; 10 males and 14 females, Xishuangbanna, Menglun, G213 (National road) secondary forest, 644 m, 21°54.439′N, 101°17.755′E, 20 November 2009, coll. Guo Tang and Zhiyuan Yao; 4 males and 1 female, Mengla County, Bubeng monsoon forest, 690 m, 21.61379°N, 101.58079°E, 10 August 2012, coll. Guo Zheng, Xue Li and Wenyue Zhu.

Differential diagnosis.

This species resembles Balta notulata ( Stål, 1860) in appearance, but can be distinguished from the latter by the following characters: 1) hind margin of subgenital plate concave and without produced medial lobe (Fig. 24) while that in B. notulata with produced medial lobes; 2) some fine spines present on either apex of lateral lobes of subgenital plate (Fig. 24), which are lacking in B. notulata .

Description.

Male. Body brownish yellow (Figs 1, 2). Third and fourth maxillary palpomeres almost the same length, both distinctly longer than the fifth (Fig. 16). Tegmen with M and CuA oblique (Fig. 18); hind wing with M simple; CuA with three or four complete branches and without incomplete ones (Fig. 19). Front femur type C2 (Fig. 20), tarsal claws strongly asymmetrical and unspecialized (Fig. 21). Abdominal tergites unspecialized.

Male genitalia. Supra-anal plate with posterior margin distinctly produced and concave in U-shape in the middle, right and left paraprocts simple (Fig. 22). Subgenital plate with hind margin strongly concave medially; two lateral lobes with styli on either apex direct dorsally and with fine spines (Figs 23, 24). Hook-like phallomere on right side and with preapical concavity (Fig. 27). Median phallomere with base acuminate, apex blunt with some long setae, median phallomere appendage with some fine spines (Fig. 26). Left phallomere complex, consisted of several irregular sclerites (Fig. 27).

Female. Both tegmina and hind wings slightly beyond the end of abdomen. Subgenital plate with hind margin rounded.

Measurements (mm).

Overall length: male 13.5-14.0, female 9.5-10.0; tegmen length male 11.0-12.0, female 7.9-8.2; pronotum length × width male 2.5-2.7 × 3.5-3.8, female 2.5-2.7 × 3.4-3.7.

Etymology.

Latin word crena means “nick”, referring to subgenital plate with its hind margin strongly concave medially.

Distribution.

China (Yunnan).