Open Access

Carolyn Trietsch, István Mikó, Andrew R. Deans

• The majority of Ceraphronoidea (Insecta: Hymenoptera) species were described in the late 1800s and early 1900s, with most of these early descriptions relying on text alone. Few type specimens have been illustrated and even fewer have been photographed, posing a challenge to taxonomists working on the group today. Here, we attempt to remove the barriers obstructing Ceraphronoidea research by creating a photographic catalog of the type specimens present at the Muséum national d'Histoire naturelle (MNHN) in Paris, France. We discuss the history of the ceraphronoid specimens present in the collection and provide comments on unpublished species notes from former Ceraphronoidea taxonomist Paul Dessart. We synonymize Ceraphron myrmecophilus Kieffer, 1913 syn. nov. with Aphanogmus abdominalis (Thomson, 1858) (Hymenoptera: Ceraphronidae) based on the male genitalia morphology, body shape and presence of foveae on the median length of the mesoscutellum. We also report the discovery of the missing male holotype of Ceraphron testaceus (Risbec, 1953) (Hymenoptera: Ceraphronidae) and several potential types of Aphangomus aphidi (Risbec, 1955) (Hymenoptera: Ceraphronidae).