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Zaglyptogastra Ashmead, 1900 was erected for a large, distinctive Braconinae wasp, Z. abbotti, collected in Lower Siam (Thailand) (Ashmead 1900). Although nine species are known from the Indo-Australian region, only three are recorded from mainland Indochina: Z. abbotti Ashmead, 1990 (Thailand), Z. vitalisi (Turner, 1919) (Thailand, Laos) and Z. vietnamica Long & Mai, 2015 (Vietnam) (El-Heneidy & Quicke, 1991; Long & Mai, 2015). In 2021, two further Asia species, Z. exilis Li, van Achterberg & Chen, 2021 and Z. tricolor Li, van Achterberg & Chen, 2021 were described from China (Li et al. 2021).

Four new species of the genus Physaraia Shenefelt, 1978 (Hymenoptera: Braconidae) from Thailand are described and illustrated based on female specimens collected from the Malaise traps and aerial net, increasing the total number of Physaraia species of Indo-Australian region to six species; P. nanensis Chansri, Quicke Butcher, sp. nov., P. panhai Chansri, Quicke Butcher, sp. nov., P. sakaeratensis Chansri, Quicke Butcher, sp. nov., P. sinensis Quicke et al., 1997, P. sumatrana, Enderlein, 1905 and P. tigeri Chansri, Quicke Butcher, sp. nov. A checklist to the species known of Physaraia with their distribution and dichotomous key to accommodate the new species are provided.