ARBICO Organics Diglyphus Isaea Leafminer Parasite Beneficial WaspsWarm Weather Leafminer Parasite helps control and prevent Agromyzid leafminers during warm weather and in greenhouses. Ships FREE via Overnight methods on Tuesdays Only. MINIMUM 7 day processing prior to shipment. These 2 mm. mini wasps, like D. siberica, work best when used to prevent the establishment of several leafminer species. They can also tackle minor infestations. Once a colony is established, they can adequately protect a crop throughout the