Figure 1. Camponotus sp. ca. textor larva parasitized by Horismenus myrmecophagus. H. myrmecophagus develops as a gregarious endoparasitoid. The ant larva has been cut open (its head is at the bottom of the picture). Several pupae of the eulophid parasitoid may be observed, some of them still inside the ant larva.
Figures 17–22. 17–20 antenna in lateral view: 17 Horismenus myrmecophagus female 18 H. microdonophagus female 19 H. microdonophagus male (apical 2 flagellomeres missing) 20 Microdonophagus tertius female. 21–22 right fore wing female: 21 H. myrmecophagus 22 H. microdonophagus.