2 literature references for Oncochalcis marginata Cameron, 1904:

Author: Narendran, T.C.
Year: 1985
Title: A taxonomic revision of the chalcid parasites (Hymenoptera: Chalcidoidea) associated with |Opisina arenosella| Walker (Lepidoptera: Xylorictidae).
Source: JOURBOOK: Entomon VOLUME: 10(2) PAGES: 83-96
Author: Cameron, P.
Year: 1904
Title: On some new genera and species of Hymenoptera.
Source: JOURBOOK: Entomologist VOLUME: 37 PAGES: 161-162