Cestromoecha Karsch, 1893

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

Genus Cestromoecha Karsch, 1893 Figs 9-15 , 16-21

Cestromoecha Karsch, 1893. Berlin Ent. Z. 38: 128; type species: Poreuomena tenuipes Karsch, 1890

Re-description.

Medium-sized, predominantly green, typical Phaneropterinae with narrow and elongate tegmina surpassed at their apices by the alae. Fastigium verticis smaller than the width of the scapus; triangular with rounded apex, shallowly sulcate, separated from conical fastigium frontis by a gap. Antennal sockets elevated beside fastigia. Fore coxa with a spine. Fore and mid femora dorsally rounded, ventrally with very tiny spinules. Hind femora slender, slightly thickened in basal part, with few tiny spinules along the ventral length. Fore tibiae very slender, thickened in the area of the tympana and slightly sulcate dorsally; tympana open on the inner, conchate on the outer side. Hind tibiae triangular or narrow rectangular in diameter, densely packed along each edge with slender spines; dorsally with a pair of tiny spurs on each side, ventrally with each one larger spur on each side. Left tegmen of typical Phaneropterine shape, with a slight bulge where the stridulatory file is located at the underside (Figs 10 , 17 ). The right tegmen with a well-developed mirror (Figs 3 , 5 ). Male 10th abdominal tergite either flap-like or stout (Figs 13 , 14 , 20 ). Cerci from stout to long, slender and pointed; subgenital plate deeply bilobate; without styli (Figs 15 , 21 ).

Figures

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).

Figures 16 - 21. Morphological details of male Cestromoecha tenuipes. Habitus (16), stridulatory area (17), stridulatory file on the underside of the left tegmen (18), abdominal apex in lateral (19) and dorsal view (20) and subgenital plate (21).

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.