About Macroglossum bombylans Boisduval
Macroglossum bombylans, commonly called the humble hummingbird hawkmoth, is a moth species that belongs to the Sphingidae family. Its known distribution ranges from Nepal through China to Taiwan, Korea, and Japan, with a single recorded sighting from the Russian Far East. It can also be found in northern Thailand, northern Vietnam, and the Philippines. The wingspan of this moth measures between 40 and 52 mm. In northern China, this species produces two generations per year, and adult moths are on wing from May to August. In Korea, adult Macroglossum bombylans have been recorded in flight from mid-July to mid-October. In Hong Kong, adults have been observed feeding at the flowers of Barleria cristata and Duranta erecta, typically feeding during dawn and late afternoon. In South Korea, adult moths act as a minor fruit-piercing pest of Citrus junos. Recorded host plants for the larvae include Rubia cordifolia in India, Rubia akane in Japan, and species from the genera Paederia and Stauntonia in other locations.