Symplocodes Hebard, 1929

Zheng, Yuhong, Wang, Chenchen, Che, Yanli & Wang, Zongqing, 2015, The species of Symplocodes Hebard (Blattodea: Ectobiidae: Blattellinae) with description of a new species from China, Journal of Natural History 50, pp. 339-361 : 340-341

Symplocodes Hebard, 1929

Symplocodes Hebard, 1929: 75 ; Princis, 1971: 1129; Roth, 1995: 995; Roth, 1999: 133.

Type species

Hemithyrsocera ridleyi Shelford, 1912 .

Diagnosis (Partly after Roth, 1995)

Vertex with interocular space slightly less than the distance between antennal sockets. Tegmina and wings fully developed (except the female of Symplocodes impar , which are reduced). Tegmina with an apical posterior branch of radius ( AP. POST. BR) near middle of main stem of radius, median and cubitus veins longitudinal; hind wings with some of Rs and R1 slightly thickened distad, cubitus vein curved, simple, or with only one complete branch and incomplete branch absent . Front femur Type A 3 ( Figures 2C , 3C , 4C , 6C , 7C ), pulvilli on four proximal tarsomeres, tarsal claws with inner margins heavily and conspicuously dentate, arolia present. Male: seventh abdominal tergum specialized with transparent region in centre, and with lateral lobes present or absent; subgenital plate strongly asymmetrical, with more or less complex structures on left side in dorsal view, most of left stylus absent (except S. juxtaridleyi ); hook-like L3 short, on left side.

Remarks

Roth (1995) stated the only character that clearly separates Symplocodes from Hemithyrsocera is the distinctly toothed tarsal claw. Pseudophyllodromiinae genus Chorisoserrata also has toothed claws ( Figure 8A – C ) but it differs from Symplocodes in terms of characteristics as follows: eyes reduced, interocular space distinctly wider than the distance between antennal sockets; pronotum subelliptical but hind margin nearly truncate; median phallomere very long and slender, totally extending beyond the end of body with apical part protruding. The claw dentation of these two genera differs in some aspects morphologically and may result in (or from) different behaviours or habitats; the details are given in our entry for discussion.

Distribution

Oriental Region.

Figures

Figure 2. Symplocodes manubria Feng et Guo from China, Yunnan Prov., xishuangbanna, meng’a. (A) Head, frontal view; (B) maxillary palps 3–5; (C) front femur; (D) pronotum; (E) tegmen; (F) hind wing; (G) abdominal tergum 7, dorsal view; (H) supra-anal plate and paraprocts, ventral view; (I) subgenital plate, dorsal view; (J) phallomere L3; (K) phallomere L2vm; (L) phallomeres R2 & R3. Scale bars = 0.5 mm (A–D, G, H, J–L), 1 mm (E, F, I).

Figure 3. Symplocodes marmorata marmorata (Brunner von Wattenwyl) from China, Xizang Aut. Reg., motuo. (A) Head, frontal view; (B) maxillary palps 3–5; (C) front femur; (D) pronotum; (E) tegmen; (F) hind wing; (G) abdominal tergum 7, dorsal view; (H) supra-anal plate and paraprocts, ventral view; (I) subgenital plate, dorsal view; (J) phallomere L3; (K) phallomere L2vm; (L) phallomeres R2 & R3. Scale bars = 0.5 mm.

Figure 4. Symplocodes marmorata tsaii (Bey-Bienko) comb. nov., (A–H, J–O) from China, Yunnan Prov., Xishuangbanna, Meng’a; (I) from Yunnan Prov., Yangbi, west bank of Yangbi River. (A) Head, frontal view; (B) maxillary palps 3–5; (C) front femur; (D) pronotum; (E) tegmen; (F) hind wing; (G) abdominal tergum; 7, dorsal view; (H–J) supra-anal plate and paraprocts, ventral view; (K, L) subgenital plate, dorsal view; (M) phallomere L3; (N) phallomere L2vm; (O) phallomeres R2 & R3. Scale bars = 0.5 mm (A–D, G–I, K, M–O), 1 mm (E, F, J, L).

Figure 6. Symplocodes ridleyi (Shelford), (A–G, I–M) from China, Yunnan Prov., Simao, (H) from Yunnan Prov., Daluo. (A) Head, frontal view; (B) maxillary palps 3–5 (C) front femur; (D) pronotum; (E) tegmen; (F) hind wing; (G) abdominal tergum 7, dorsal view; (H, I) supra-anal plate and paraprocts, ventral view; (J) subgenital plate, dorsal view; (K) phallomere L3; (L) phallomere L2vm; (M) phallomeres R2 & R3. Scale bars = 0.5 mm (A–D, G–M), 1 mm (E, F).

Figure 7. Symplocodes euryloba sp. nov. from China, Hainan Prov., Nada. (A) Head, frontal view; (B) maxillary palps 3–5; (C) front femur; (D) pronotum; (E) tegmen; (F) hind wing; (G) abdominal tergum 7, dorsal view; (H) supra-anal plate and paraprocts, ventral view; (I) subgenital plate, dorsal view; (J) phallomere L3; (K) phallomere L2vm; (L) phallomeres R2 & R3. Scale bars = 0.5 mm (A–D, G–L), 1 mm (E, F).

Figure 8. Tarsal claws. (A–C) Chorisoserrata biceps Wang et Feng, male: (A) front leg; (B) middle leg; (C) hind leg. (D–F) Symplocodes manubria Feng et Guo, male: (D) front leg; (E) middle leg; (F) hind leg. (G–I) Symplocodes marmorata marmorata (Brunner von Wattenwyl), male: (G) front leg; (H) middle leg; (I) hind leg. (J–L) Symplocodes marmorata tsaii (Bey-Bienko) comb. nov., male: (J) front leg; (K) middle leg; (L) hind leg. (M–O) Symplocodes ridleyi (Shelford), male: (M) front leg; (N) middle leg; (O) hind leg. (P) Front tarsal claw of Symplocodes euryloba sp. nov., male. Scale bars = 0.2 mm.