Balta hwangorum Bey-Bienko, 1958

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 : 24-25

Balta hwangorum Bey-Bienko, 1958 Figs 9, 10, 64-75

Balta hwangorum Bey-Bienko, 1958: 676, 688 (Type locality: Yunnan, China); Princis 1969: 978.

Balta picea Bey-Bienko, 1958: 677 (Holotype, female) (Type locality: Yunnan, China). Syn. n.

Material examined.

Deposited in IESWU. China, Yunnan Prov.: 3 males, Xishuangbanna, Damenglong, 650 m, 13 April 1958, coll. Zhizi Chen; 5 males, Xishuangbanna, Menghun, 650-750 m, 9 June 1958, coll. Xuwu Meng; 1 male and 1 female, Xishuangbanna, Jinghong, 650 m, 6-24 July 1958, coll. Junhua He; 1 male, Xishuangbanna, Menghun, 650-750m, 1 June 1958, coll. Leyi Zheng; 1 male, Xishuangbanna, Menghun, 650-1080 m, 7 June 1958, coll. Chunpei Hong and Shuyong Wang; 1 male, Xishuangbanna, Damenglong, 650 m, 14 April 1958, coll. Chunpei Hong; 1 male, Xishuangbanna, Menghun, 650-750 m, 3 February 1958, coll. Shuyong Wang; 2 males, Xishuangbanna, Menga, 1050-1080 m, 20 May 1958, coll. Fuji Pu; 1 male, Xishuangbanna, Menghun, 650-750 m, 13 June 1958, coll. Yiran Zhang; 1 male, Xishuangbanna, Menghun, 650-750 m, 18 April 1958, coll. Leyi Zheng; 1 male, Xishuangbanna, Xiaomengyang, 850 m, 13 June 1958, coll. Lingchao Zang; 2 males and 1 female, Xishuangbanna, Menglun, G213 (National road) bamboo forest, 627 m, 21°54.380′N, 101°16.815′E, 21-26 November 2009, coll. Guo Tang and Zhiyuan Yao; 2 males and 2 females, Xishuangbanna, Menglun, G213 (National road) bamboo forest, 627 m, 21°54.380′N, 101°16.815′E, 22 November 2009, coll. Guo Tang and Zhiyuan Yao; 2 males and 2 females, Xishuangbanna, Menglun, G213 (National road) secondary forest, 644 m, 21°54.439′N, 101°16.755′E, 20 November 2009, coll. Guo Tang and Zhiyuan Yao; 1 male, Mojiang, 1 May 2013, coll. Zongqing Wang. China: Guangxi: 1 female, Pingxiang, 850 m, 11 May 1963, coll. Sikong Liu.

Redescription.

Male. Body yellowish brown (Figs 9, 10). Vertex to anterior margin of antennal sockets reddish brown, face yellowish brown to blackish brown (Figs 9, 10). Pronotum with inconspicuous black brindle or two oblique and symmetrical stripes, with disk reddish brown to black brown, two lateral borders, anterior and posterior margin yellowish brown and hyaline (Fig. 66). Legs yellowish brown to blackish brown. Abdomen blackish brown. Apex of subgenital plate with reddish brown spots or without. Fourth and fifth maxillary palpomeres approximately same length, both distinctly shorter than the third (Fig. 65). Tegmen with M and CuA slightly oblique (Fig. 67). Hind wing with M without branches, CuA with five complete branches and without incomplete ones (Fig. 68). Front femur type C2 (Fig. 69), tarsal claws strongly asymmetrical and unspecialized (Fig. 70). Abdominal tergites unspecialized.

Male genitalia.

Supra-anal plate in ventral view short, hind margin arched, slightly emarginated in the middle; right and left paraprocts similar (Fig. 71). Subgenital plate symmetrical throughout except at the base, hind margin with deep V-shape emargination, styli similar, conical, arising on lateral lobes (Fig. 72). Hook-like phallomere on right side, hook slender (Fig. 73). Median phallomere sticklike, slightly curved, apex acuminate, near the apex part with a sclerite, base of arc appendage with brush-like structure (Fig. 74). Left phallomere complex, apex with a bifurcate spinous structure and a slender hairs structure (Fig. 75).

Female.

Slight sexual dimorphism in that the female body is smaller than the male. Supra-anal plate symmetrical, rounded, hind margin divided in the middle. Subgenital plate broad and rounded.

Measurement (mm).

Overall length male 15.0-18.5, female 14.0-17.1; tegmen length male 13.5-16.0, female 11.2-14.0; pronotum length × width male 2.9-3.5 × 4.1-4.9, female 3.0-3.1 × 5.0-5.1.

Remarks.

Several specimens were separated as two species by Bey-Bienko, mainly based on the body color (1958). However, after examining a large number of specimens, the results show that body color of B. hwangorum varies. Moreover, in Bey-Bienko’s records, in B. hwangorum , the length of lobes of the subgenital plate is different among the species, but in fact we find no difference.

Distribution.

China (Yunnan, Guangxi).