Genus Didymocorypha Wood-Mason, 1877

Schizocephalus (Didymocorypha): Wood-Mason, 1877: 221.

Pyrgocotis: Stål, 1877: 14; Westwood, 1889: 3; Brunner de Wattenwyl, 1893: 59; Kirby, 1904: 218; Giglio-Tos 1921: 31.

Didymocorypha: Wood-Mason, 1882: 24; Westwood, 1889: 3; Wood-Mason, 1889: 34; Brunner de Wattenwyl, 1893: 59; Bolivar, 1897: 303; Kirby, 1904: 218; Giglio-Tos, 1919: 57; Giglio-Tos, 1921: 31; Giglio-Tos, 1927: 116; Beier, 1935: 5; Beier, 1964: 942; Beier, 1968: 8; Mukherjee et al., 1995: 235; Ehrmann, 2002: 122; Otte & Spearman, 2005: 328; Ghate et al., 2012: 442; Mukherjee et al., 2014: 15; Ehrmann & Borer, 2015: 231; Patel et al., 2016: 20259; Schwarz & Roy, 2019: 115, 143; Wu & Liu, 2020: 53; Kamila & Sureshan, 2022: 17; Kamila & Sureshan, 2023: 67.

Type species: Schizocephalus (Didymocorypha) ensifera Wood-Mason, 1877 .

Diagnosis: Small, slender, dry grass-like yellowish brown body. Females larger than males. Compound eyes oblong. Head elongated like a lance due to prolongation of the juxta-ocular lobes of vertex with a median suture along the entire length. Lower frons trapezoid. Pronotum slender, with weak supra-coxal dilation and almost parallel lateral margins. Fore femur with 4 posteroventral and 4 discoidal spines. Fore tibia with 5‒6 posteroventral spines. Meso- and metathoracic legs long, simple, with a genicular spine. Males mesopterous or apterous, females apterous. If winged, then both wings hyaline.

Distribution: India, China, Nepal, Sri Lanka, Thailand (Fig. 34).

Species currently included:

1. D. lanceolata (Fabricius, 1798)

2. D. libaii Wu & Liu, 2020

3. D. wayanadensis Kamila & Sureshan sp. nov.

Key to Didymocorypha species

1. Cerci short, rectangular-shaped, little longer than wide (Figs. 7, 15, 16, 28).................... D. wayanadensis sp. nov.

- Cerci very long, lance-shaped, more than 8 times longer than wide (Figs. 23, 27)................................... 2

2. Male apterous; ocelli of male indistinct; body densely covered with black patches and spots.................... D. libaii

- Male mesopterous (Fig. 18b); ocelli of male distinct (Fig. 20); body sometimes with few black spots......... D. lanceolata