Leucopis minor Malloch 1921

are host of

• Global Biotic Interactions: Marietta leopardina Motschulsky 1863 (Parasitoid wasp)
• Global Biotic Interactions: Pachyneuron leucopiscida Mani 1939

are mutualistic with

• Global Biotic Interactions: Platanthera leucophaea (Nutt.) Lindl. (Eastern prairie fringed orchid)
• Global Biotic Interactions: Houstonia purpurea var. calycosa A. Gray (Venus' pride)
• Global Biotic Interactions: Desmodium illinoense A. Gray (Illinois ticktrefoil)
• Global Biotic Interactions: Blephilia hirsuta (Pursh) Benth. (hairy pagoda-plant)
• Global Biotic Interactions: Sanicula marilandica L. (Maryland sanicle)

are parasitized by

• Global Biotic Interactions: Agromyzaphagus detrimentosus Gahan 1912
• Global Biotic Interactions: Pachyneuron leucopiscida Mani 1939

visit flowers of

• Global Biotic Interactions: Sium suave Walter (hemlock waterparsnip)
• Global Biotic Interactions: Polytaenia nuttallii DC. (Nuttall's prairie parsley)
• Global Biotic Interactions: Oxypolis rigidior (L.) Raf. (stiff cowbane)