An illustrated and updated checklist of the Indian Chrysididae is presented, including synonyms and distributional summaries. The list includes 105 species in 20 genera. Six species are described as new: Elampus gladiator Rosa, sp. nov. (Himachal Pradesh, Jammu & Kashmir, and Uttar Pradesh), Chrysis aswathiae Rosa, sp. nov. (Tamil Nadu, elegans species group), Chrysis baldocki Rosa, sp. nov. (Tamil Nadu, smaragdula group), Chrysis bernasconii Rosa, sp. nov. (Tamil Nadu, subsinuata group), Chrysis polita Rosa, sp. nov. (West Bengal, Uttaranchal, Myanmar, ignita group), and Chrysis travancoriana Rosa, sp. nov. (Kerala and Tamil Nadu, praecipua group). Six species are newly recorded: Chrysis hecate Mocsáry, 1889; Chrysis jalala Nurse, 1902; Chrysis obscura Smith, 1860; Istiochrysis ziliolii Rosa & Xu, 2016; Praestochrysis furcifera (Bingham, 1903); Primeuchroeus siamensis (Bischoff, 1910). Two new synonymies are proposed: Chrysis abuensis Nurse, 1902, syn. nov. of Chrysis wroughtoni du Buysson, 1896b; Chrysis nursei Bingham, 1903 syn. nov. of Chrysis gujaratica Nurse, 1903a. Holopyga (Hedychridium) virescens Mocsáry, 1914 is transferred to the genus Hedychridium Abeille de Perrin, 1878; the name Hedychridium virescens (Mocsáry, 1914) results a secondary homonym of Hedychridium virescens du Buysson, 1908 and it is here replaced with the new name Hedychridium mocsaryi Rosa, nom. nov. Chrysis cotesi du Buysson, 1893, sp. resurr. is here revalidated from the previous synonymy with Chrysis palliditarsis Spinola, 1838. Chrysis bahadur Nurse, 1903a is transferred from the ignita group to the splendidula group, Chrysis bhavanae Bingham, 1903 is transferred from the ignita group to the maculicornis group, and Chrysis thakur is transferred from the smaragdula group to the oculata group. Chrysis nila Bingham, 1903 and Chrysis variipes Mocsáry, 1911 are included in the newly established nila group. Spinolia kashmirae Kimsey in Kimsey & Bohart, 1991 is classified as unnecessary replacement name. The name Parnopes oberthuri du Buysson, 1904 is here emendated into Parnopes oberthueri (currently Cephaloparnops oberthueri). Potential erroneous data, misidentifications and dubious distributional records that may exist in the literature are also identified. We examined almost all type specimens, excluding taxa described by Cameron and Smith. We provide a key to Indian genera, including those expected for the country and not yet recorded, and colour images of type and non-type specimens belonging to 82 species.

The genera Trichrysis Lichtenstein, 1876 and Chrysidea Bischoff, 1910 from India are reviewed. A new species, Trichrysis poseidonia sp. nov. from India and Nepal is described. Trichrysis bengalensis (Mocsáry, 1889) is revalidated from the previous synonymy with T. lusca (Fabricius, 1804). Trichrysis inops (Gribodo, 1884) is recorded from India for the first time. The lectotype of Chrysis spectrum Wickwar, 1908 is designated. Chrysis mendicalis Cameron, 1897 is transferred from the genus Trichrysis to the genus Chrysidea. Keys and illustrations are provided for the identification of the eleven species of Trichrysis and the four species of Chrysidea so far known in the country, including a Sri Lankan species.

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Only two species of Chrysidea Bischoff, 1913 have been reported from India: C. furiosa (Cameron, 1897) from West Bengal and C. pumila (Klug, 1845) from Maharashtra. Here, we report the first record of a third species, C. falsa Rosa & Xu, 2015 from India, previously recorded only from China, Malaysia, and the Philippines, and thereby extending the known range of this species. We randomly collected chrysidids from Kasaragod and Calicut Districts in Kerala, which lies in the south-western part of India. Six specimens of C. falsa were collected using sweep nets. Five of them were from two sacred groves in Kasaragod District, Edayilakkad Kavu and Koyithatta Sree Dharma Shastha Kavu. One specimen was collected at Vadakara, Calicut District. The specimens from Kasaragod and Vadakara were found in small rock crevices and on the brick walls of an old abandoned house respectively.