A network that helps people worldwide obtain rapid advice and information on crop protection, including the identification and management of plant pests.
PestNet is a network that helps people worldwide obtain rapid advice and information on crop protection, including the identification and management of plant pests. It started in 1999. Anyone with an interest in plant protection is welcome to join. PestNet is free and is moderated, ensuring that messages are confined to plant protection.
March 2022. A request from Palau for the likely identification of a hornworm on Morinda citrifolia. Several suggestions were given: Gnathothlibus (=Chromis) erotus and Cephonodes; and (in Thailand), Hippotion velox and Macroglossum sitiene. Macroglossum sp. was also reported from Rubiaceae in Indonesia and it was parasitized by the tachinid, Carcelia iridipennis (Wulp) (=modicella). It is likely that the Palau insect is one of these sphingids.
But then when the photos were finally attached it was identified as Macroglossum hirundo, but the subspecies is more difficult. It could be ssp. cinerascens Butler from Caroline Islands.
Another suggestion came from Thailand: Macroglossum sylvia, a species which also occurs from Ceylon to Sundaland, Sulawesi, the Philippines and Taiwan.
The insect was used as an example of the workings of Ecoport: See Pest taxonomy/IDs: Ecoport.