Genus Irenangelus Schulz, 1906

Irenangelus Schulz, 1906: 175 .

Type species: Irenangelus hornus Schulz, 1906: 160 (= Agenia reversa Smith, 1873: 448), by monotypy.

Diagnosis. Uncoiled antenna, reniform eyes with the inner orbits strongly emarginate and diverging above, a fully exerted labium in both sexes, ocelli in compact triangle far away from eyes, often enlarged, metacoxa normal-sized, less than 1.5× as long as mesocoxa; metatarsal claws normal, divergent and weakly bent apically, with additional tooth (Kimsey & Wasbauer 2004; Shimizu & Wahis 2007; Loktionov & Lelej 2015).

Biology. Members are found to be cleptoparasites on pompilid wasps Auplopus nyemitawa (Rohwer, 1919), A. semialatus (Williams, 1919) (Pepsinae) and Tachypompilus analis (Fabricius, 1781) (Pompilinae) (Williams 1919). Irenangelus hikosanus (Wahis, 2007) pursues its host pompilid Platydialepis ryoheii (Ishikawa, 1957) ( Pepsinae) to prey up on the common host Heteropoda forcipata (Karsch, 1881) (Heteropodidae) (Shimizu & Wahis 2007).

Distribution. Eastern Palaearctic, Neotropical, Afrotropical (Madagascar), Oriental and Australian Regions (Kimsey & Wasbauer 2004; Shimizu & Wahis 2007).

Remarks. A new species, I. acuminatus Binoy & Girish Kumar, sp. nov., is here described with illustrations and is incorporated into a key to species of the Indian subcontinent (Fig. 23).