Description of five new eulophid species (Hymenoptera: Eulophidae) associated with leaf vein galls of Madhuca longifolia (J. Koenig) (Sapotaceae) in India Author Singh, Sudhir Forest Entomology Discipline, Forest Protection Division, Forest Research Institute, New Forest, Dehradun- 248 006, Uttarakhand, INDIA. Author Kumar, Arvind 0000-0003-3218-7319 Forest Entomology Discipline, Forest Protection Division, Forest Research Institute, New Forest, Dehradun- 248 006, Uttarakhand, INDIA. & arvind. ento @ gmail. com; https: // orcid. org / 0000 - 0003 - 3218 - 7319 arvind.ento@gmail.com Author Kaneria, Manish 0000-0001-6227-5219 Forest Entomology Discipline, Forest Protection Division, Forest Research Institute, New Forest, Dehradun- 248 006, Uttarakhand, INDIA. & kaneria. manish @ gmail. com; https: // orcid. org / 0000 - 0001 - 6227 - 5219 kaneria.manish@gmail.com text Zootaxa 2022 2022-04-26 5129 1 1 36 journal article 55826 10.11646/zootaxa.5129.1.1 33a9658d-001b-4ca4-adbe-84bb3f383011 1175-5326 6487991 3770D8E0-7496-4704-8587-F302E5250EBC Genus Quadrastichus Girault Quadrastichus Girault, 1913d: 232 , 252. Type species: Quadrastichus nigrinotatus Girault , by original designation. Quadrastichus was synonymised with Aprostocetus by Bouček (1988) . Graham & La Salle (1991) resurrected it from the synonymy and revised its status as a senior synonym of Cecidotetrastichus Kostjukov. A complete synonymy list for Quadrastichus is provided by Graham (1991). Generic keys which would allow identification to Quadrastichus are provided by Graham (1987 as Cecidotetrastichus ), La Salle (1994) , Schauff et al. (1997) and Narendran (2007) . Many species of Quadrastichus are associated with galls, usually as endoparasitoids of Diptera Cecidomyiidae and Hymenoptera Cynipidae . Its other hosts include Coleoptera Curculionidae and Buprestidae (Graham 1991; La Salle 1994 ; Noyes 2019 ). Kim et al. (2004) recorded one species as an invasive pest inducing galls on coral trees ( Erythrina spp. : Fabaceae ). In total 89 species are reported worldwide ( Noyes 2019 ) including 25 species from India . Narendran (2007) provided a key to the Oriental species.