Review of the genus Isolia Forster (Platygastroidea: Platygastridae: Sceliotrachelinae) with description of two new species from India

Two new species of Isolia Forster viz. I. bhima Veenakumari and Buhl sp. n. and I. bandoola Veenakumari and Buhl sp. n. are described and illustrated from India. The generic concept of Isolia has been expanded with additional characters. Supplementary characters have been provided to the original descriptions wherever required. All species (except I. longistriata Alekseev), including the six Palearctic species (I. biroi Szabo, I. dobrogica Popovici & Buhl, I. foersteri Szabo, I. hispanica Buhl, I. mongolica (Kozlov) and I. santosi Garcia & Pujade-Villar) and the two Oriental species (I. indica Buhl and I. kalingae Veenakumari & Buhl) have been imaged. Isolia striatitergitis Szabo is transferred to the genus Fidiobia Ashmead, and the images are provided. Isolia kalingae is treated as a junior synonym of I. indica. A key is furnished to differentiate genera in the Isolia-cluster and the species of Isolia treated here.