| Trap-nesting wasps and bees: life histories, nests, and associates KV Krombein (No Title), 1967 | 987 | 1967 |
| Catalog of Hymenoptera in America north of Mexico KV Krombein, PD Hurd, DR Smith, BD Burks Smithsonian Institution Press 1, 1199-2209, 1979 | 949 | 1979 |
| Hymenoptera of America North of Mexico: synoptic catalog CFW Muesebeck, KV Krombein, HK Townes US Department of Agriculture, 1951 | 581 | 1951 |
| Hymenoptera of America North of Mexico: synoptic catalog, second supplement KV Krombein, BDW Burks US Department of Agriculture, 1967 | 221* | 1967 |
| Superfamily Cynipoidea BD Burks, KV Krombein Catalog of Hymenoptera in America north of Mexico 1, 1045-1107, 1979 | 177 | 1979 |
| Hymenoptera of America north of Mexico KV Krombein, BD Burks Synoptic Catalog (Agriculture Monograph No. 2), 1958 | 152 | 1958 |
| Braconidae. Aphidiidae. Hybrizontidae PM Marsh, KV Krombein Catalog of Hymenoptera in America north of Mexico. Smithsonian Institution …, 1979 | 91 | 1979 |
| Superfamily Sphecoidea KV Krombein Catalog of Hymenoptera in America north of Mexico 2, 1573-1740, 1979 | 75 | 1979 |
| Catalog of Hymenoptera in America-North of Mexico-V. 1-Symphyta and Apocrita (Parasitica). Smithsonian Institution, DR Smith, PD Hurd, KV Krombein | 70 | 1979 |
| The genera of Bethylinae (Hymenoptera: Bethylidae). A Polaszek, KV Krombein | 66 | 1994 |
| Observations on feeding and movement of tobacco hornworm larvae M McFadden Journal of Economic Entomology 61 (2), 352-356, 1968 | 58 | 1968 |
| Biosystematic studies of Ceylonese wasps, XIX: natural history notes in several families (Hymenoptera: Eumenidae, Vespidae, Pompilidae and Crabronidae) KV Krombein | 57 | 1991 |
| Biosystematic Stydies of Ceylonese Wasps, XI: A Monography of the Amiseginae and Loboscelidiinae (Hymenoptera: Chrysididae) KV Krombein | 53 | 1983 |
| Vespoidea KV Krombein Catalog of Hymenoptera in America north of Mexico 2, 1469-1522, 1979 | 49 | 1979 |
| Biosystematic studies of Ceylonese wasps, II: A monograph of the Scoliidae (Hymenoptera: Scolioidea) KV Krombein | 48* | 1978 |
| Biological and taxonomic observations on the wasps in a coastal area of North Carolina (Hymenoptera: Aculeata) KV Krombein Wasmann journal of biology 10 (3), 257-341, 1952 | 46 | 1952 |
| Biodiversity of domatia occupants (ants, wasps, bees, and others) of the Sri Lankan myrmecophyte Humboldtia laurifolia Vahl (Fabaceae) KV Krombein, BB Norden, MM Rickson, FR Rickson | 45 | 1999 |
| Catalog of Hymenoptera in America north of Mexico. Volume 1. Symphyta and Apocrita (Parasitica). KV Krombein, PDJ Hurd, DR Smith, BD Burks | 44 | 1979 |
| Natural history of Plunners Island, Maryland. XVI. Biological notes on Chaetodactylus krombeini Baker, a parasitic mite of the megachilid bee, Osmia (Osmia) lignaria Say … KV Krombein Proceedings of the Biological Society of Washington 75, 237-249, 1962 | 43 | 1962 |
| The Aculeate Hymenoptera of Micronesia II. Colletidae, Halcitidae, Megachilidae, and Apidae KV Krombein Hawaiian Entomological Society, 1950 | 43 | 1950 |
