Scalida quadrispinata Wang & Che, 2010

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

Scalida quadrispinata Wang & Che , sp. nov.

Figures 23–30

Description. Male: Pronotum length×width 2.4× 3.6 mm, tegmen length 13 mm, body length including tegmen 15 mm. Body blackish brown. Vertex blackish brown, testaceous or yellowish brown. Occiput region pale yellow. Antennal base blackish brown, remainder of antenna yellowish brown. Fifth maxillary palpomere dark brown. Pronotum brown with darker U-shaped macula on disk ( Fig. 23 ). Tegmina blackish brown, basal and apical part paler brown. Vertex with interocular space nearly equal to distance between antennal sockets ( Fig. 22 ). Third and fifth maxillary palpomeres about equal length, each distinctly longer than the fourth. Tegmina with discoidal sectors and anal vein longitudinal. Hind wings with costal vein thickened distally, radial vein straight, unbranched; medial and cubital vein distinctly curved near middle, medial vein simple and unbranched, cubital vein with 3 complete branches and 3 incomplete branches, apical triangle distinct and large ( Fig. 24 ). Front femur Type B 3 ( Fig. 25 ). Abdominal terga unspecialized. Male genitalia with supra-anal plate in ventral view symmetrical, hind margin produced into two spinelike processes, with four minute, scattered spines; a small spine arising next to long, tapering process, middle of hind margin with one small, semicircular, projecting medial lobe with scattered small teeth ( Fig. 26 ). Paraprocts asymmetrical, in ventral view right paraproct irregular with one large spine in middle, and three minute teeth on the spine; left paraproct irregular, robust and bifurcated, with one large curved and acuminate spine directed cephalad nearly in middle ( Fig. 26 ). Subgenital plate in dorsal view asymmetrical, lateral margins shallowly sinuate and upcurved near apex; right posterior corner distinctly concave. Two styli dissimilar, left stylus upright, bifurcate, with curved arms, the right stylus curved to the right, apex with two minute teeth; rounded protuberance between styli ( Fig. 27 ). Left hook-like phallomere with distal part slender ( Fig. 28 ); median phallomere long, bent near apex, distal part with thick, short setae; one associated median phallomere appendage present, beneath median phallomere, nearly S- shaped, acuminate at right distal part and quadrifurcated at left ( Fig. 29 ). Right phallomere reduced, left lateral margin with 2 teeth near apex ( Fig. 30 ).

Material examined. Holotype ♂, China, Yunnan, Xishuangbanna, Jinghong , 650m, 23 June 1957, coll. Meng Xuwu. Paratypes: 10 ♂, 1 ♀, Yunnan, Xishuangbanna, Xiaomengyang , 850 m, 17 June 1957, coll. Wang Shuyong.

Remarks. This species is similar to S. biclavata . It differs from that species as follows: 1) hind margin of supra-anal plate produced into two spine-like processes; in S. biclavata , middle of hind margin with one Wshaped incision, two posterior angles acuminate and with some long setae; 2) subgenital plate in dorsal view asymmetrical, lateral margins shallowly sinuate and upcurved near apex, right posterior corner distinctly concave; in S. biclavata , subgenital plate in dorsal view asymmetrical, irregularly trapezoid-like, middle of posterior margin distinctly convex.

Etymology. The specific name is derived from the Latin prefix “ quadri ” and the Latin word “ spinatus ”, referring to the apical margin of the supra-anal plate with 4 spines.

Figures

FIGURES 22–30. Scalida quadrispinata sp. nov. 22. Head; 23. Pronotum; 24. Hind wing; 25. Front femur; 26. Supraanal plate and paraprocts, ventral view; 27. Subgenital plate, dorsal view; 28. Left phallomere; 29. Median phallomere and appendage of median phallomere; 30. Right phallomere.