 Schlinger in 1962, and is now one of the 20 largest insect collections in the United States, and one of the 10 largest strictly University-based collections.For many of the special taxonomic collections, such as specimens from southern California, the effective rank is considerably higher.The UCR collection of Chalcidoidea (Hymenoptera) is one of the world's largest of this group, and the slide collection of Chalcidoidea has no comparison in the world (more than 100,000 slides, primarily Trichogrammatidae, Aphelinidae, Mymaridae, Eulophidae, and Encyrtidae).