Cestromoecha longicerca Massa, 2013

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

Cestromoecha longicerca Massa, 2013 Figs 1 , 9-15

Cestromoecha longicerca Massa, 2013. J. Orth. Res. 22: 142; type locality: Central African Republic, Dzanga-Ndoki National Park (BMPC).

Material examined.

Central African Republic, Dzanga-Ndoki National Park , Lake 1, UV trap, 11-12.II.2012 (holotype ♂); same data 20-23.II.2012 (paratype ♂) (BMCP) ; Central African Republic, Dzanga-Ndoki NP, Saline des Buffles , 25.I.2012 (1♂); Mboki, 25-26.I.2012 (light) (1♂); Lake 1, 14-15.II.2012, 19-20.II.2012 (light) (3♂) (PAPC) . Gabon, Mikongo (Rougier), Mts de Cristal (secondary forest) (430 m alt.) 28.VII-12.VIII.2019 (MV Light Trap) (1♂) (ANHRT) .

Diagnosis.

The stridulatory area of the left tegmen is short; it is slightly arched and has ca. 30 evenly-spaced teeth (Fig. 11 ). The right tegmen has a mirror (Fig. 10 ). The cerci are strongly curved downwards at their bases, with their inner parts concave, sharply bent upwards and becoming narrower with pointed tips (Figs 13 , 14 ). The subgenital plate is triangular, narrowing to its apex, divided into two long and acute lobes (Fig. 15 ).

Colour.

Green-brownish, tegmina green with a black marking on the stridulatory area (Figs 9 , 10 ), black spots on the posterior margin of tegmina, 3-4 small yellow spots on the centre of the tegmina. Some small reddish spots are present on the pronotum.

Measurements

(mm). Males. Body length: 15.7-16.0; Pronotum length: 4.0-4.2; Pronotum height: 3.5-3.7; Length of hind femora: 17.4-17.5; Length of tegmina: 25.8-28.2.

Remarks.

The cerci of the male have a very stout base, with the inner part concave bending sharply upwards and becoming very narrow; the cerci surpass clearly the 10th tergite and the apices are very pointed (Figs 13 , 14 ).

Distribution.

Dzanga-Ndoki National Park (Central African Republic) ( Massa 2013, Massa et al. 2020), and Mts de Cristal (Gabon) (Massa, in press).

Figures

Figures 1 - 5. Venation of Poreuomenini. Arrows point at Rs branching of from the radius 1. Rs branching off after the middle in Cestromoecha tenuipes. 2. Rs branching off basally, for example, in Poreuomena africana. 3 - 5. Mirror area of Cestromoecha tenuipes lacking the flaps on both tegmina bases, but with a well-developed mirror on the right tegmen (arrows). 5. Mirror area of Cestromoecha tenuipes from the underside with a well-developed stridulatory file, typical for all Poreuomenini.

Figures 9 - 15. Morphological details of male Cestromoecha longicerca. Habitus (9). Stridulatory area with mirror on right tegmen (10), stridulatory file on the underside of the left tegmen (11), close-up of mirror (12), abdominal apex in lateral view (13), rear view (14) and subgenital plate (15).