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A new species of parasitoid wasp, Leiophron crassivena Gupta & van Achterberg sp. nov. (Braconidae, Euphorinae), is described and illustrated from central India along with first report of the Palaearctic species Aphaereta vondelparkensis van Achterberg et al. (Braconidae, Alysiinae) from India.

Two new species of parasitoid wasps, Leiophron indefinita Gupta van Achterberg sp. nov. (Braconidae, Euphorinae) and Paroligoneurus indicus Gupta van Achterberg sp. nov. (Braconidae, Ichneutinae) are described and illustrated from northern India.

A new genus of the subfamily Exothecinae, Occipitotus Singh van Achterberg gen. nov. is proposed. The type species Occipitotus langpramensis Singh van Achterberg sp. nov., is described and illustrated, which is the second species of the subfamily known from India. A key to the extant genera of the subfamily Exothecinae is provided.

The braconid tribe Diospilini (subfamily Brachistinae) is reported for the first time from India with the description of a new genus, Atree, along with the description of a new species A. rajathae from south India. The newly described genus belongs to the Aspigonus genus group showing the presence of a wide, deep sculptured groove on the propleuron. Based on morphological affinities, two species reported from Taiwan which were earlier included in the genus Diospilus have been transferred to the new genus, as A. improcerus (Chou Hsu, 1998) comb. nov. and A. validus (Chou Hsu, 1998) comb. nov. A key to the Indomalayan and Palaearctic genera of Diospilini is provided along with the key to the species of Atree gen. nov.

The small chelonine tribe Adeliini is one of the derived groups with the postpectal carina absent, which is considered to be an apomorphic character for the Cheloninae. Adeliine genera generally exhibit a narrow endemism although the genus Adelius is widely distributed. Adeliini are reported from the Indian subcontinent for the first time with the description of a new genus and a new species, Carinadelius medicus Ranjith van Achterberg gen. et sp. nov. from south India. A revised key to the genera of Adeliini is provided with the illustrations of all included genera. The genus Myriola, which was previously included under Adelius, is re-instated based on morphological characters. The New World species of the genus Paradelius are transferred to Sculptomyriola Belokobylskij: Sculptomyriola neotropicalis (Shimbori Shaw, 2019), S. nigra (Whitfield, 1988) and S. rubra (Whitfield, 1988) are new combinations.

The family Stephanidae from India is reviewed, resulting in the description and illustration of one new species of Megischus Brullé, two new species of Foenatopus Smith and two new species of Parastephanellus Enderlein. In addition, a Chinese species Foenatopus weii Chen, van Achterberg Xu and a range extension of Stephanus Jurine are reported from India. The male of Stephanus bidentatus van Achterberg, 2002, is newly reported with descriptions and illustrations. Keys to genera and species of Indian Stephanidae are provided along with a checklist of Stephanidae occurring in India.

The small braconid subfamily, Ichneutinae is one of the least studied groups within the Braconidae. Old world species of the widely distributed ichneutine genus, Paroligoneurus (unknown from the Neotropical region) is revised along with description of a new species, P. harishi Ranjith van Achterberg sp. nov. We reinstate the genera Anaprixia Mason and Muesebeckia Mason based on the following characters; exodont mandibles and absence of spiracles in the alternate tergites (in Anaprixia) and presence of carinae on propodeum and anterior subalar depression with carina (in Muesebeckia). Five species, Paroligoneurus cosmopterygivorus (He, 2000), P. crassicornis (He, 2000), P. flavifacialis (He, 2000), P. sinensis (He, 2000) and P. songyangensis (He, 2000) were described from the Oriental part of China are transferred from Oligoneurus to Paroligoneurus. A taxonomic key to the Old world species Paroligoneurus and a provisional checklist of extant species are provided.

The parasitoid Coccygidium transcaspicum (Kokujev) (Hymenoptera: Braconidae: Agathidinae) was reared from fall armyworm or Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in maize fields in South India (Telangana) during 2019. It is the first report of a host for C. transcaspicum and the first report of C. transcaspicum as a parasitoid of S. frugiperda across the globe. The present study contains the first report from India and the Oriental region, provides morphological identification details of C. transcaspicum and comparison notes from its closely allied species C. melleum (Roman) which is basically an Afrotropical species.

During surveys for the potential biocontrol agents Merochlorops species complex (Diptera: Chloropidae), to control the invasive weed Hedychium gardnerianum Sheppard ex Ker Gawl. (Zingiberaceae), two new species of Rhogadopsis Brèthes (Braconidae: Opiinae) viz., R. gratia Gupta van Achterberg, sp. n. and R. macrusa Gupta van Achterberg, sp. n. were reared as solitary larval-pupal parasitoids of Merochlorops in the stems of H. gardnerianum. Interestingly, both wasp species have very different ovipositor lengths, in addition to other characters for species delimitation. Perhaps parasitism by the respective wasp species depends on the thickness of the stem harbouring the chloropid larvae. In the present study, both these new species of wasps are described and illustrated, together with notes on their biology. For the first time the genus Rhogadopsis has been found associated with Chloropidae; earlier records concern Agromyzidae.

A new species Phanerotoma andamanensis Gupta & van Achterberg sp. nov. is described from the Andaman Islands, India. Differences of the new species from the other Oriental species are discussed. Phanerotoma agarwali Varshney & Shujauddin, 1999, is a junior synonym of P. syleptae Zettel, 1990, syn. nov.