| Scientific name | Authorship | Rank | Status | Images | |
|---|---|---|---|---|---|
| Josefrazowskia recondita | (Razowski, 2006) | species | Accepted | ||
| Josefrazowskia secundana | Aarvik, 2019 | species | Accepted | ||
| Juxtilema smithi | Volynkin, 2021 | species | Accepted | ||
| Kalenga ansorgei | (Warren, 1899) | species | Accepted | ||
| Kalenga culanota | Whalley, 1971 | species | Accepted | ||
| Kalenga discata | (Warren, 1905) | species | Synonym | ||
| Kalenga maculanota | Whalley, 1971 | species | Accepted | ||
| Kalenga namizimus | Heppner & Thiele, 2016 | species | Accepted | ||
| Kalenga pusillata | (Warren, 1902) | species | Synonym | ||
| Kariosa albulata | Mey, 2011 | species | Accepted | ||
| Kariosa autumnaria | Mey, 2011 | species | Accepted | ||
| Karschiola holoclera | (Karsch, 1894) | species | Accepted | ||
| Karschiola ndzou | László & Volynkin, 2023 | species | Accepted | ||
| Kayamuhakaia aarviki | Lehmann, 2025 | species | Accepted | ||
| Kayamuhakaia aberdarensis | Lehmann, 2025 | species | Accepted | ||
| Kayamuhakaia barrychappelli | Lehmann, 2025 | species | Accepted | ||
| Kayamuhakaia bokatolaensis | Lehmann, 2025 | species | Accepted | ||
| Kayamuhakaia finchhattoni | Lehmann, 2025 | species | Accepted | ||
| Kayamuhakaia fontainei | Lehmann, 2025 | species | Accepted | ||
| Kayamuhakaia gitegaensis | Lehmann, 2025 | species | Accepted | ||
| Kayamuhakaia haberlandorum | (Lehmann, 1997) | species | Accepted | ||
| Kayamuhakaia hermannstaudei | Lehmann, 2025 | species | Accepted | ||
| Kayamuhakaia hilarysommerlatteae | Lehmann, 2025 | species | Accepted | ||
| Kayamuhakaia huchtemanni | Lehmann, 2025 | species | Accepted | ||
| Kayamuhakaia juliusmathiui | Lehmann, 2025 | species | Accepted |