Symplocodes euryloba, Zheng, C. Wang, Che & Z. Wang, 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 : 352-357

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.4329090
persistent identifier	https://treatment.plazi.org/id/03A6AB4C-9F6D-DA4A-77E8-7A166490FCEA
treatment provided by	Carolina
scientific name	Symplocodes euryloba
status	sp. nov.

Treatment

Symplocodes euryloba View in CoL sp. nov.

( Figures 1I, J View Figure 1 , 7A – L View Figure 7 , 8P View Figure 8 )

Type specimens

Holotype: male, China, Hainan Prov., Nada , April 1962, coll. Y Zhou ( SWU) . Paratype: one male, China, Hainan Prov ., Mt Jianfengling , 17 June 1982, coll . LY Zheng ( SYSU).

Description

Length, male, overall length including tegmen: 11.5 mm; pronotum length × width: 2.6 × 3.7 mm; tegmen length: 9.0 mm.

Body small, pale yellow to yellowish brown ( Figure 1J View Figure 1 ). Vertex yellowish brown with irregular brown maculae. Face blackish brown. Ocellar spot yellowish white ( Figure 1I View Figure 1 ). Antennae yellowish brown. Fifth maxillary palpomere brown with apical part yellowish white, the others yellowish brown ( Figure 1I View Figure 1 ). Pronotum yellowish brown, with one dark brown curved stripe on lateral corner, and lateral borders nearly hyaline ( Figures 1J View Figure 1 , 7D View Figure 7 ). Tegmina yellowish brown ( Figure 1J View Figure 1 ), hind wings hyaline. Abdominal terga blackish brown, sterna yellowish brown with brown spots on lateral borders ( Figure 1J View Figure 1 ).

Vertex with interocular space less than the distance between antennal sockets ( Figure 7A View Figure 7 ). Fourth and fifth maxillary palpomeres approximately same length, and both shorter than the third ( Figure 7B View Figure 7 ). Pronotum subelliptical, broadest width behind the middle, hind margin slightly produced medially ( Figure 7D View Figure 7 ). Tegmen with six anterior rami of radius; with 10 apical rami of radius and unbranched; median and cubitus veins longitudinal, median vein with one complete branch before the middle, and cubitus vein with three complete branches, one with secondary divisions ( Figure 7E View Figure 7 ). Hind wing with branched R1 and with one anterior rami of radius; median and cubitus veins weakly curved, the former simple and cubitus vein with one single complete branch near apex, incomplete branch absent ( Figure 7F View Figure 7 ). Front femur Type A3 ( Figure 7C View Figure 7 ), pulvilli on four proximal tarsomeres. Tarsal claws symmetrical, distinctly dentate ( Figure 8P View Figure 8 ). Seventh abdominal tergum specialized, with a pair of oblique ridges (visible in pinned specimen) through centre and posterior part, the centre hyaline, and with reduced lateral lobes at disc ( Figure 7G View Figure 7 ).

Supra-anal plate ( Figure 7H View Figure 7 ) in ventral view symmetrical and nearly triangular, with hind margin slightly concave in the middle; right and left intercercal processes similar, large and upturned, apex tapering and each with a spinous process near apical third. Right and left paraprocts ( Figure 7H View Figure 7 ) irregular and dissimilar. Subgenital plate ( Figure 7I View Figure 7 ) in dorsal view asymmetrical, left posterolateral corner with a non-setose process which is broad, upturned and blunt at apex, the right posterolateral corner weakly produced and with setae; hind margin arcuate and produced in the middle, left side with small spines, setae, and a process with spines on right side; right stylus arising at the concavity of right side of subgenital plate, left stylus absent. Genitalia with L3 ( Figure 7J View Figure 7 ) very small, without pre-apical incision; L2vm ( Figure 7K View Figure 7 ) slender and rod-like, with distal part curved and apex acute, the membranous filament arising near the apical quarter; R2 ( Figure 7L View Figure 7 ) curved, R3 ( Figure 7L View Figure 7 ) with upper lobe resembling a long handle and lower lobe nearly fan-shaped.

Remarks

This species bears a close resemblance to S. juxtaridleyi Roth, 1995 , but differs from the latter in the following: (1) subgenital plate with hind margin arcuate and produced in the middle, but in the latter coniform; (2) left posterolateral corner process of subgenital plate upturned and blunt at apex, but the process of the latter with apex acute; (3) L2vm with inner margin smooth, but the latter with inner margin minutely serrated; (4) left stylus absent, but the latter with left stylus.

Etymology

The specific epithet is derived from the Latin word “ eurylobus ”, referring to the subgenital plate being broad as a result of the protrusion on the left posterolateral corner.

Distribution

China (Hainan).

Checklist of the species and subspecies of Symplocodes

1. Symplocodes amicus Bey-Bienko, 1958: 673 View in CoL . ( China)

2. Symplocodes annamensis View in CoL ( Hanitsch, 1927: 9, Ceratinoptera View in CoL ). ( Vietnam, Thailand)

3. Symplocodes impar Bey-Bienko, 1969: 857 View in CoL . ( India)

4. Symplocodes juxtaridleyi Roth, 1995: 997 View in CoL . ( Thailand)

5. Symplocodes manubria Feng et Guo, 1990: 340 View in CoL . ( China)

6. Symplocodes marmorata View in CoL ( Brunner von Wattenwyl, 1893: 19, Phyllodromia View in CoL ). ( China, Myanmar, Thailand)

Subspecies Symplocodes marmorata marmorata ( Brunner von Wattenwyl, 1893: 19) View in CoL . ( China, Myanmar, Thailand)

Subspecies Symplocodes marmorata tsaii ( Bey-Bienko, 1958: 673) View in CoL comb. nov. ( China)

7. Symplocodes ridleyi View in CoL ( Shelford, 1912: 660, Hemithyrsocera View in CoL ). ( China, Singapore, Indonesia, Malaysia)

8. Symplocodes euryloba sp. nov. ( China)

Key to species and subspecies of Symplocodes View in CoL worldwide (males)

1. Right stylus present ( Figures 2I View Figure 2 , 3I View Figure 3 , 4K – L View Figure 4 , 6J View Figure 6 , 7I View Figure 7 ).............................................................. 2 Right stylus absent......................................... ......................................... Symplocodes impar View in CoL

2. Hind margin of subgenital plate produced, left portion with a large or small process ............................................................................................................................................... 3 Hind margin of subgenital plate slightly produced to left, without process.......... ........................................................................................................................ Symplocodes amicus View in CoL

3. Left stylus present..................................... ..................................... Symplocodes juxtaridleyi Left View in CoL stylus absent ( Figures 2I View Figure 2 , 3I View Figure 3 , 4K, L View Figure 4 , 6J View Figure 6 , 7I View Figure 7 ).................................................................. 4

4. Ventral surface of supra-anal plate with several spines near hind margin ( Figures 2H View Figure 2 , 3H View Figure 3 , 4H – J View Figure 4 )................................................................................................................................... 5 Ventral surface of supra-anal plate without spines ( Figures 6H, I View Figure 6 , 7H View Figure 7 ) ................. 7

5. Left posterolateral margin of subgenital plate with a large and long handle-like process, pointed to the left and somewhat upwards; paraprocts without spinelike process ( Figure 2H – I View Figure 2 )............................... ............................... Symplocodes manubria View in CoL Left posterolateral margin of subgenital plate with a small process, pointed to the lower left corner; paraprocts with several spine-like processes ( Figures 3H, I View Figure 3 , 4H – L View Figure 4 )................................................................................................................................................... 6

6. Intercercal processes with apices divided into two to four spinous branches and upcurved; the upper branch obviously larger than the lower ones ( Figure 4H – J View Figure 4 ) ............................................................................. Symplocodes marmorata tsaii View in CoL comb. nov. Intercercal processes with apex tapering and each with a spine-like process preapically, which is connected to the main part of the process by membrane ( Figure 3H View Figure 3 ) ............................... ............................... Symplocodes marmorata marmorata View in CoL

7. Seventh abdominal tergum modified, without setae in the middle ( Figure 7G View Figure 7 ) ............................................................................................. Symplocodes euryloba View in CoL sp. nov. Seventh abdominal tergum modified, with setae in the middle ( Figure 6G View Figure 6 ) .... 8

8. Seventh abdominal tergum with reduced lateral lobes, subgenital plate with left posterolateral corner produced and elongated, apex slightly concave..................... .............................................................................................................. Symplocodes annamensis Seventh View in CoL abdominal tergum without reduced lateral lobe, subgenital plate with left posterolateral corner produced and unevenly broad, apex broadly rounded ( Figure 6G,J View Figure 6 )................................................................................................ Symplocodes ridleyi View in CoL