| Trap-nesting wasps and bees: life histories, nests, and associates KV Krombein (No Title), 1967 | 980 | 1967 |
| Catalog of Hymenoptera in America north of Mexico KV Krombein, PD Hurd, DR Smith, BD Burks Smithsonian Institution Press 1, 1199-2209, 1979 | 942 | 1979 |
| Hymenoptera of America North of Mexico: synoptic catalog CFW Muesebeck, KV Krombein, HK Townes US Department of Agriculture, 1951 | 554 | 1951 |
| Hymenoptera of America North of Mexico: synoptic catalog, second supplement KV Krombein, BDW Burks US Department of Agriculture, 1967 | 220* | 1967 |
| Superfamily Cynipoidea BD Burks, KV Krombein, PD Hurd, DR Smith Catalog of Hymenoptera in America north of Mexico 1, 1045-1107, 1979 | 174 | 1979 |
| Hymenoptera of America north of Mexico KV Krombein, BD Burks Synoptic Catalog. USDA Monograph, 1958 | 152 | 1958 |
| Superfamily Sphecoidea KV Krombein Catalog of Hymenoptera in America north of Mexico 2, 1573-1740, 1979 | 76 | 1979 |
| Catalog of Hymenoptera in America-North of Mexico-V. 1-Symphyta and Apocrita (Parasitica). Smithsonian Institution, DR Smith, PD Hurd, KV Krombein | 69 | 1979 |
| The genera of Bethylinae (Hymenoptera: Bethylidae). A Polaszek, KV Krombein | 65 | 1994 |
| Biosystematic studies of Ceylonese wasps, XIX: natural history notes in several families (Hymenoptera: Eumenidae, Vespidae, Pompilidae and Crabronidae) KV Krombein | 57 | 1991 |
| Observations on feeding and movement of tobacco hornworm larvae M McFadden Journal of Economic Entomology 61 (2), 352-356, 1968 | 57 | 1968 |
| 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 |
| 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 | 46 | 1999 |
| Biosystematic studies of Ceylonese wasps, II: A monograph of the Scoliidae (Hymenoptera: Scolioidea) KV Krombein | 46* | 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 | 45 | 1952 |
| The Aculeate Hymenoptera of Micronesia II. Colletidae, Halcitidae, Megachilidae, and Apidae KV Krombein Hawaiian Entomological Society, 1950 | 44 | 1950 |
| 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 | 42 | 1962 |
| Catalog of Hymenoptera in America north of Mexico. Volume 1. Symphyta and Apocrita (Parasitica). KV Krombein, PD Hurd Jr, DR Smith, BD Burks Catalog of Hymenoptera in America north of Mexico. Volume 1. Symphyta and …, 1979 | 40 | 1979 |
| Agriculture Monogr. CFW Muesebeck, KV Krombein, HK Townes | 40 | 1951 |
