Symplocodes marmorata tsaii ( Bey-Bienko, 1958 ) Zheng, Yuhong, Wang, Chenchen, Che, Yanli & Wang, Zongqing, 2015

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 : 345-349

publication ID	https://doi.org/ 10.1080/00222933.2015.1079337
publication LSID	lsid:zoobank.org:pub:25DFE591-F01F-4EC7-95CD-604A7D70C3BA
DOI	https://doi.org/10.5281/zenodo.4329094
persistent identifier	https://treatment.plazi.org/id/03A6AB4C-9F66-DA52-771C-7EC6623CF957
treatment provided by	Carolina
scientific name	Symplocodes marmorata tsaii ( Bey-Bienko, 1958 )
status	comb. nov.

Treatment

Symplocodes marmorata tsaii ( Bey-Bienko, 1958) View in CoL comb. nov.

( Figures 1E, F View Figure 1 , 4A – O View Figure 4 , 8J – L View Figure 8 )

Symplocodes tsaii Bey-Bienko, 1958: 673 View in CoL .

Materials examined

One male, China, Yunnan Prov ., Simao, 29 May 1986, coll . PZ Feng ( SWU); one male, China, Sichuan Prov ., Yanyuan, Jinhe, 1270 m, 30 June 1984, coll . SY Wang ( SWU); two males, China, Guizhou Prov ., Wangmo, 5 – 7 June 1982, coll . PZ Feng ( SWU); two males, China, Yunnan Prov ., Xishuangbanna, Meng ’ a, 1050 – 1080 m, 8 July 1958, coll . FJ Pu ( SWU); one female, China, Yunnan Prov ., Xishuangbanna, Meng ’ a, 1050 – 1080 m, 17 July 1958, coll . FJ Pu ( SWU); two males and one female, China, Yunnan Prov ., Dali, Yangbi, west bank of Yangbi River , 15 June 1999, coll . SH Yang ( DLU); one female, China, Yunnan Prov ., Dali, Pingpo, 1600 m, 15 June 1999, coll . H An ( DLU); one female, China, Yunnan Prov ., Dali, Pingpo, 1600 m, 15 June 1999, coll . Z Xu ( DLU); one male, China, Sichuan Prov ., Xichang, 18 July 2004, coll . J Li and CX Yuan ( SYSU); one male, China, Yunnan Prov ., Dali, Yangbi, Pingpo, 1600 m, 15 June 1999, coll . Z Xu ( DLU); two females, China, Yunnan Prov ., Zhaotong, Huanghua, Yangjiawan, 3 – 30 August 2007, collector unknown ( SWU); three males and two females, China, Yunnan Prov ., Zhaotong, Huanghua, 7 – 19 September 2007, collector unknown ( SWU) .

Redescription

Length, male, overall length including tegmen: 15.5 – 16.5 mm; pronotum length × width: 2.7 – 3.1 mm × 3.5 – 4.2 mm; tegmen length: 13.5 – 14.5 mm. Female, overall length including tegmen: 15.1 – 16.0 mm; pronotum length × width: 3.0 – 3.1 mm × 4.0 – 4.1 mm; tegmen length: 13.5 – 14.6 mm.

Body medium, yellowish brown ( Figure 1E View Figure 1 ). Vertex blackish brown. Face yellowish brown, with one reddish brown spot near antennal socket ( Figure 4A View Figure 4 ). Ocellar spot yellowish white. Fifth maxillary palpomere brown with apex yellowish white, the others yellowish brown ( Figure 1F View Figure 1 ). Antennae yellowish brown with apex blackish brown. Pronotum yellowish brown, without macula or with two V-shaped maculae; each lateral corner with one curved dark brown stripe, lateral borders nearly hyaline ( Figures 1E View Figure 1 , 4D View Figure 4 ). Tegmina yellowish brown and hind wings hyaline. First through sixth abdominal terga blackish brown; sterna yellowish brown and lateral borders with black irregular maculae, or first through seventh segments black in centre ( Figure 1F View Figure 1 ).

Vertex with interocular space narrow, less than the distance between antennal sockets ( Figure 4A View Figure 4 ). Third and fourth maxillary palpi approximately same length, and both slightly longer than the fifth ( Figure 4B View Figure 4 ). Pronotum subelliptical, widest near the middle posteriorly, hind margin slightly produced at middle ( Figure 4D View Figure 4 ). Both tegmina and hind wings fully developed, extending beyond the end of abdomen. Tegmen with nine anterior rami of radius and 11 apical rami of radius, one apical ramus branched at the apical margin; median vein with three branches; cubitus vein with two branches, one of which is forked again ( Figure 4E View Figure 4 ). Hind wing with branches of R1 and one anterior ramus of radius; median vein curved and simple; cubitus vein with a single complete branch after the middle ( Figure 4F View Figure 4 ). Front femur Type A3 ( Figure 4C View Figure 4 ), pulvilli on four proximal tarsomeres. Tarsal claws symmetrical and distinctly dentate ( Figure 8J – L View Figure 8 ). Seventh abdominal tergum with a pair of oblique ridges meeting near posterior margin of the sixth segment (visible in pinned specimen); the centre hyaline with a scattered group of minute setae (invisible in pinned specimen) ( Figure 4G View Figure 4 ).

Supra-anal plate ( Figure 4H – J View Figure 4 ) in ventral view symmetrical or slightly asymmetrical, with hind margin more or less concave in the middle and several spines near hind margin; right and left paraprocts dissimilar, each with 6 – 10 spines. Intercercal processes varied, of which apices are divided into two to four spinous up-curved branches, the upper one obviously larger than the rest. Subgenital plate ( Figure 4K, L View Figure 4 ) strongly asymmetrical, in dorsal view right posterolateral corner with hairy process protruding to upper right; left lateral margin with a cylindrical process, whose apex is setose, and with a row of setae at inner basal margin; one irregular sclerite twisting and protruding near the centre of subgenital plate or close to the incision, with apex setose; one sclerite with long setae reaching left posterolateral corner. Right stylus finger-like, left stylus absent. Male genitalia with sclerotized portion of L3 ( Figure 4M View Figure 4 ) very short and without pre-apical incision; L2vm ( Figure 4N View Figure 4 ) slender, rod-like and curved, with a slim membranous branch near apical third; R2 ( Figure 4O View Figure 4 ) with a curved cleft, resembling a bean with a short bud; R3 ( Figure 4O View Figure 4 ) with upper lobe rod-like and swelling at apex, and with lower lobe irregular.

Female similar to male, supra-anal plate symmetrical or slightly asymmetrical, subgenital plate simple with hind margin rounded.

Remarks

Based on specimens of this species from various localities and illustrations provided by Roth (1999), the intraspecific variation of the intercercal process has a stable geographical gradient ( Figure 5 View Figure 5 ). The intercercal processes of individuals from the east to Hengduan mountains ( Figure 5 View Figure 5 ) have the upper spine-like branch larger than the lower ( Figure 4H – J View Figure 4 ), while those of samples from the west, S. marmorata marmorata ( Brunner von Wattenwyl, 1893) , are the opposite ( Figure 3H View Figure 3 ). In the context of other characters including phallomeres, samples exhibit no differences between the east and the west. So it is reasonable to treat these two populations as different subspecies isolated by a geographical barrier.

In addition, intrasubspecific variations occur in the intercercal process ( Figure 4H – J View Figure 4 ) and subgenital plate ( Figure 4K, L View Figure 4 ). Based on the materials examined, similar intercercal processes are found in different localities, e.g. the form similar to Figure 4H View Figure 4 being distributed in different locations of Yunnan (Meng ’ a, Simao, Yangbi). On the contrary, varied intercercal processes could be found at the same locality, e.g. specimens depicted as Figure 4H and 4J View Figure 4 are from Meng ’ a, while those depicted as Figure 4I and 4H View Figure 4 are both found in Yangbi. The same situation applies for the subgenital plate.

Distribution

China (Yunnan, Guizhou, Sichuan) .