Poreuomena gladiator Bolivar , 1906

Hemp, Claudia & Massa, Bruno, 2021, Biogeographical and evolutionary aspects of a Guineo-Congolian bushcricket tribe: Revision of the genera Cestromoecha Karsch, 1893 and Poreuomena Brunner von Wattenwyl, 1878, with the description of new species (Orthoptera, Tettigoniidae, Phaneropterinae), Deutsche Entomologische Zeitschrift 68 (1), pp. 45-79 : 45

Syn. Poreuomena gladiator Bolivar, 1906

Poreuomena gladiator Bolívar, 1906. Mem. Soc. espan. Hist. nat. 1: 337; type locality: Cameroon ( MNCN).

Material examined.

Cameroon, holotype ♂ of P. gladiator ( MNCN) (Fig. 52 ) .

Diagnosis.

Griffini (1908) supposed that, because Bolívar (1906) overlooked the paper of Sjöstedt (1902), P. gladiator Bolívar, 1906 from Cameroon could be synonymous with P. forcipata Sjöstedt, 1902, also from Cameroon. The male cerci of the two taxa are identical. Both lack the black marking on the stridulatory area of the male left tegmen (Fig. 54 ); thus P. gladiator has been synonymised with P. forcipata by Massa (2013). Morphologically most closely related to P. laeglae (both species share an asymmetrical supra-anal plate with a spine on the left margin, Fig. 55 ), P. tshuapa sp. nov. and P. magnicerca (also see diagnosis at P. laeglae ).

Description.

Rather stout species with comparatively broad tegmina (Fig. 54 ). The 10th abdominal tergite is broad with two lateral processes, while the cerci are highly modified into two branches (Figs 55 , 56 ). The inner branch is blade-like with sclerotised margins, while the outer or apical one is finger-like (also see at P. tshuapa sp. nov.). This species has an asymmetrical supra-anal plate with a stout spine on the left side, lacking on the right ( Massa et al. 2020; Fig. 55 arrow). The male subgenital plate is triangular and has a small apical concavity (Fig. 56 ). The stridulatory file has ca. 35 teeth, the last 8-10 placed more or less perpendicularly to the main file (Fig. 53 ).

Distribution.

Cameroon and the Central African Republic.

Figures

Figures 52 - 56. Morphological details of male P. gladiator (= P. forcipata) (lectotypus). Habitus (52), stridulatory file on the underside of left tegminal flap (53), stridulatory area (54), dorsal view (55) and ventral view (56) on apex. Arrow in Fig. 55 shows the asymmetrical spine.