These two are lined up perfectly for picture day! They are both in the same genus, and their appearance certainly reflects that. The spurge hawkmoth on the left is not native and has been released in the fight against leafy spurge (see previous description). The one on the right is a far-ranging species, found all across the northern US and southern Canada, into Alaska and the Yukon Territory. They are also found in Eurasia. Bedstraw hakwmoth caterpillars prefer bedstraw (Rubiaceae: Galium spp.), willow-herb/fireweed (Chamerion and Epilobium spp.), and other plants in the Onagraceae (evening primrose family). Hawkmoths, also known as sphinx moths are fast, powerful fliers, often seen hovering at flowers to sip nectar. Both species were attracted to Kristi’s light she had set up.
Photo by Kristi DuBois on 7/21/20 in Missoula, MT.