Centrocolumna Jin and Che, 2022

Jin, Duting, Zhao, Qiongyao, Han, Wei, Li, Jinxiang, Wang, Zongqing & Che, Yanli, 2022, Molecular data resolving the systematics of the related Blattellidae genera Symploce, Episymploce, and Blattella (Blattodea: Blaberoidea), Arthropod Systematics & amp; Phylogeny 80, pp. 187-208 : 187

3.2.1. Centrocolumna Jin and Che gen. nov.

Note.

Both the ML analyses and BI highly support that the clade Symploce evidens Wang and Che, 2013 plus one unknown species is the sister to the clade of Blattella + Episymploce (bs 100%, pp 1.0). Hind margin of subgenital plate with an obvious protrusion and with the right stylus located on it make them obviously distinguishable from other related genera. Therefore, we establish for them and some other taxonomic units the new genus Centrocolumna Jin and Che gen. nov. and also propose one new species and eight new combinations.

Type species.

Symploce evidens Wang and Che, 2013, by present designation.

Diagnosis.

Male. Tegmina and hindwings fully developed or slightly reduced. Hindwings with RP branched near the middle, M simple and unbranched, CuA curved with 1-4 complete and 0-5 incomplete branches; apical triangle small or absent. Anteroventral margin of front femur usually Type A. Tergal specialization and medial setal tuft always present on T1, T7 and T10. Subgenital plate asymmetrical, hind margin with a prominent protrusion in the middle, and the right stylus arising upon the protrusion. Bases of two styli obtuse, apices tapering.

Etymology.

Centrocolumna , the combination of the Latin words centr - and columna, refers to the right stylus arising upon the protrusion. The gender of Centrocolumna is feminine.

Remarks.

This genus is similar to Symploce Hebard, 1916, but it can be distinguished from Symploce by the following characters: 1) T10 usually specialized with setal tuft at disk (absent in Symploce ); 2) hind margin of subgenital plate with a prominent protrusion (absent in Symploce ).

Note.

According to the generic diagnosis of Centrocolumna gen. nov., we transferred the following species of Symploce to this genus after our critical examination of the original literature, especially the grouping of species of Symploce collected from Taiwan and Japan in Asahina (1979b) and Roth (1987).