Gymnogryllus Saussure 1877
Creators: name: Nyobe, Philene Corinne Aude Um
name: Ngoute, Charly Oumarou
name: Richard, Nzoko Fiemapong Armand
name: Robillard, Tony
name: Ma, Libin
name: Kekeunou, Sevilor
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Gryllidae
Gymnogryllus

description: Genus Gymnogryllus Saussure, 1877
Type species: Gymnogryllus leucostictus Burmeister, 1838 (= Gryllus elegans Guérin-Méneville, 1834).
Diagnosis: male pronotum very feebly, if at all, widening in front; anterior and middle tibiae abundantly pubescent; anterior metatarsi long; ovipositor of variable length, never rudimentary (Vasanth 1993).
Key to African species of Gymnogryllus bsased on males
In this key we do not include Gymnogryllus castaneus Bolivar, 1910 since the only known specimen is a female.
1 Long apical field..................................................................................... 2
- Short apical field...................................................................................... 9
2 Harp with three veins.................................................................................. 3
- Harp with four veins................................................................................... 7
3 Epiphallus with a V-shaped notch and large ectoparameres..................................................... 4
- Epiphallus with a U-shaped and narrow ectoparameres........................... Gymnogryllus lucens (Walker, 1869)
4 Body and lateral lobes of same color...................................................................... 5
- Body and lateral lobes of different color................................................................... 6
5 Body color blackish; lateral lobes of pronotum black........................... Gymnogryllus amani Otte et al., 1988
6 Body color reddish brown; lateral lobes blackish in posterior two-thirds, pale brown in lower anterior quarter................................................................................. Gymnogryllus kareni Otte et al., 1988
7 Mirror divided into two cells............................................. Gymnogryllus caviceps (Karsch, 1893)
- Mirror divided into three cells........................................................................... 8
8 Body color dark reddish brown to black; lateral lobes dark reddish brown or black, lightest in lower anterior quarter.......................................................................... Gymnogryllus compactus (Walker, 1869)
- Body color pale yellowish brown; lateral lobes mostly pale but with dark markings intruding from disc................................................................................... Gymnogryllus joburgensi Otte et al., 1988
9 Harp with two oblique veins........................................................................... 10
- Harp with more than two oblique veins.................................................................. 12
10 Median ocellus obsolete................................................. Gymnogryllus ebneri (Chopard, 1927)
- Median ocellus not obsolete............................................................................ 11
11 Lateral lobes dark brown in dorsal area, lower margin ivory-colored; a thin pale band intrudes dorsally onto disc along anterior margin; mirror divided.................................................. Gymnogryllus vicinus (Chopard, 1955)
- Lateral lobes completely dark brown; mirror non -divided........ Gymnogryllus bilongi Um Nyobe & Kekeunou sp. nov.
12 Harp with three veins; foretibiae with only an outer tympanum................................................ 13
- Harp with four veins; foretibiae with two tympana.......................................................... 14
13 Pronotum shiny....................................................... Gymnogryllus capensis Otte et al., 1988
- Pronotum very finely rugose, not shiny................................. Gymnogryllus cylindricollis (Bolivar, 1910)
14 Lateral lobes reddish brown; legs all uniformly orange to reddish brown........ Gymnogryllus brevipennis Chopard, 1934
description: Published as part of Nyobe, Philene Corinne Aude Um, Ngoute, Charly Oumarou, Richard, Nzoko Fiemapong Armand, Robillard, Tony, Ma, Libin & Kekeunou, Sevilor, 2023, Description of one new species of the genus Gymnogryllus (Orthoptera, Gryllidae, Gryllinae) from Cameroon with a key for African species, pp. 591-596 in Zootaxa 5369 (4) on pages 592-595, DOI: 10.11646/zootaxa.5369.4.8, http://zenodo.org/record/10151834