The oviparous female and male of Stomaphis betulidahuricae Zhang and Qio, 1999 (Aphidoidea: Lachninae) are described and illustrated in detail for the for the first time. Notes on distribution, biology and host plants are presented. Also, the morphology of the male genitalia are illustrated.

• Hong-Yul Seo(National Institute of Biological Resources)
• Ki Gyoung Kim(National Institute of Biological Resources)
• Sun-I Kim(National Institute of Biological Resources)