Blattella germanica asahinai ( Mizukubo, 1981 ) Cai & Yao & Wang & Che, 2025

Cai, Jin-Zhuo, Yao, Wen-Wen, Wang, Zong-Qing & Che, Yan-Li, 2025, On the species status of Blattella germanica and Blattella asahinai (Blattodea, Blattellidae), and other morphologically similar species, ZooKeys 1250, pp. 155-188 : 155-188

Blattella germanica asahinai ( Mizukubo, 1981) stat. nov.

Blattella asahinai Mizukubo, 1981: 153; Roth 2003: 87.

Blattella beybienkoi Roth, 1985: 28. Synonymized by Roth 1986: 371.

Material examined.

China • 3 females; Yunnan Province, Baoshan City, Baihualing, Jiu Jiezi ; 24 Aug. 2015; Xin-Ran Li, Zhi-Wei Qiu leg. • 1 male; Yunnan Province, Dehong Dai and Jingpo Autonomous Prefecture, Yingjiang County, Nabang Town ; 11 July 2012; Dong Wang leg.

Remarks.

Based on morphological comparisons, the genetic distance, and the ABGD delineation results, B. asahinai is considered to be a subspecies of B. germanica . The primary distinctions between B. germanica and B. asahinai are primarily observed in the morphology of the glandular fossae present on the eighth abdominal tergite, the varying sizes of their first ootheca, the coloration of the abdominal tergite during the later instars, and their distinct habitat environments (see Results and Fig. 18 for further details).

Distribution.

China ( Taiwan, Yunnan); England, India, Indonesia, Japan, Malaysia, Myanmar, Thailand, United States.

Figures

Figure 18. Comparative morphology of B. germanica and B. asahinai. A – J, U. B. germanica; K – T, V. B. asahinai. A. Habitus, dorsal view; B. Habitus, ventral view; C. Head, ventral view; D. Abdominal tergite 7, ventral view; E. Dorsal glands, dorsal view; F. Supra-anal plate, ventral view; G. Pronotum, dorsal view; H. Abdominal tergite 8, ventral view; I. Phallomere; J. Subgenital plate, ventral view; K. Habitus, dorsal view; L. Habitus, ventral view; M. Head, ventral view; N. Abdominal tergite 7, ventral view; O. Dorsal glands, dorsal view; P. Supra-anal plate, ventral view; Q. Pronotum, dorsal view; R. Abdominal tergite 8, ventral view; S. Phallomere; T. Subgenital plate, ventral view; U, V. Female external genitalia. Scale bars: 5 mm (A, B, K, L); 1 mm (C, F, G, I, J, M, P, Q, S – V); 0.5 mm (D, E, H, N, O, R). Abbreviations: aa. - anterior arch; bsv. - basivalvula; cp. - crosspiece; intc. s. - intercalary sclerite; p. l. - posterior lobes of valvifer II; pp. - paraprocts; pt. - paratergites; SVII - sternum VII; T I – X - abdominal tergites I – X; v. I, II, III - valvules I – III; vlf. I - first valvifer; vlf. Ia - first valvifer arm; vst. s. - vestibular sclerite; and sp. pl. - spermathecal plate.