Scalida ectobiodes ( Saussure, 1873 )

Wang, Zongqing & Che, Yanli, 2010, The genus Scalida Hebard (Blattaria: Blattellidae, Blattellinae) in China, Zootaxa 2502 (1), pp. 37-46 : 40-42

Scalida ectobiodes ( Saussure, 1873)

Figures 11–21

Ischnoptera ectobiodes Saussure 1873: 104 .

Scalida ectobiodes, Princis 1950: 214 .

Sigmella ectobiodes, Roth 1991: 23 .

Description. Male: Pronotum length×width 2.8× 3.5 mm, tegmen length 10 mm, body length including tegmen 12.5–13.2 mm. Body blackish brown. Occiput region pale yellow, clypeus yellowish brown. Antenna blackish brown except base yellowish brown. Pronotum blackish brown with anterior and lateral borders yellowish brown ( Fig. 12 ). Tegmina blackish brown with pale yellow borders. Vertex with interocular space narrower than the distance between antennal sockets ( Fig. 11 ). Third and fifth maxillary palpomeres of about equal length, each longer than the fourth. Tegmina with discoidal vein longitudinal. Costal vein of hind wings swollen and thickened, radial veins straight and unbranched; medial and cubital vein clearly curved, medial vein simple and unbranched, cubital vein with 3 complete branches and 2 incomplete branches, apical triangle distinct ( Fig. 13 ). Front femur Type B 3 ( Fig. 14 ). First abdominal tergum with a group of setae in middle ( Fig. 15 ); seventh abdominal tergum with a pair of large, transverse depressions in middle, and posterolateral corners with small rounded lobes ( Fig. 16 ). Male genitalia supra-anal plate in ventral view weakly asymmetrical, hind margin distinctly produced with two large spines directed toward subgenital plate, and deeply and concavely excavated with one projecting medial lobe with a scattered group of minute teeth ( Fig. 17 ). Paraprocts asymmetrical and different; in ventral view the right paraproct irregular, apex with minute teeth; left paraproct bifurcate, one branch stout and apex undulated, the other acute with upturned apex ( Fig. 17 ). Subgenital plate in dorsal view asymmetrical, lateral margins deeply sinuate and upcurved near apex; posterior margin weakly convex with two styli, left style large, bifurcated and directed laterad, right style small, bifurcated and directed laterad, apex of each style acuminate ( Fig. 18 ). Hook-like left phallomere robust proximally ( Fig. 19 ). Median phallomere sticklike, apex swollen into large, irregular plate with long setae; small, irregular appendage present, stout at right side and serrated at left ( Fig. 20 ). Right phallomere reduced, spadelike, with one S-shaped appendage ( Fig. 21 ).

Material examined. 2 ♂, 1 ♀, China, Yunnan, Simao , 29 May 1986, coll. Feng Pingzhang ; 12 ♂, 3 ♀, Guizhou, Wangmo , 5/ 6 June 1982, coll. Feng Pingzhang ; 6 ♀, Yunnan, Xishuangbanna, Xiaomengyang , 850 m, 17 June 1957, coll. Wang Shuyong ; 1 ♂, 1 ♀, Fujian, Putian , 5 July 1978, coll. Huang Bangkan ; 2 ♂, 2 ♀, Yunnan, Xishuangbanna, Menghun , 750 m, 4 June 1959, coll. Meng Xuwu ; 1 ♂, Yunnan, Xishuangbanna, Jinghong , 650 m, 21 June 1958, coll. Zhang Yiran ; 1 ♂, 1 ♀, Yunnan, Jinghong , 6 June 1986, coll. Feng Pingzhang ; 3 ♂, Guizhou, Wangmo , 23 May 1982, coll. Feng Pingzhang.

Remarks. This species was previously known only from southern China ( Saussure, 1873, Bey-Bienko, 1957) and Myanmar ( Princis, 1950). The most distinctive character is the pronotum with pale cephalic and lateral margins. We examined specimens collected from southern China and drew the conclusion that this species should be transferred back to Scalida . The peculiar hind margin of supra-anal plate resembles other species of Scalida , and the interstyle process is absent.

Distribution. China (Yunnan, Guizhou); Myanmar.

Figures

FIGURES 11–21. Scalida ectobiodes (Saussure). 11. Head; 12. Pronotum; 13. Hind wing; 14. Front femur; 15. First abdominal tergum, dorsal view; 16. Seventh abdominal tergum, dorsal view; 17. Supra-anal plate and paraprocts, ventral view; 18. Subgenital plate, dorsal view; 19. Left phallomere; 20. Median phallomere and appendage of median phallomere; 21. Right phallomere.