Hymenoptera/Wasps/Steklar
| Vol nr | Area dealt with |
|---|---|
| ESS 1 | Sri Lanka/Ceylon Report 1— papers on Hymenoptera |
| ESS 4 | Sri Lanka/Ceylon Report 2— papers on Hymenoptera |
| ESS 12 | Scelionidae W. Palearctic |
| ESS 23 | Psithyrus |
| ESS 24 | Sphecidae |
| ESS 26 | Eulophidae |
| ESS 27 | Aphidiinae |
| ESS 31 | Eulophidae |
| ESS 33 | Ibalidae |
| ESS 38 | Thomson’s Chalcidoidea — types & collection |
| ESS 46 | Liopteridae |
| ESS 49 | Eulophidae |
| ESS 52 | Braconidae |
| OES 4 | Tenthredinoidea of SE Asia |
| OES 17 | Swedish Bombus |