Caltoris bromus bromus
Leech 1894 - The Extra-spot Swift
A common species on Samui.
It is very similar to a large number of other medium sized brown species, and can only be distinguished with absolute certainty from a set specimen. It usualy, but not always, has an extra small non-hyaline spot in space 1b of the forewing, and may have an extra spot in space 2 of the hindwing.
Flight Period
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| x | x | x | x | x | x | x | x | x |
Wingspan
33 - 38mm
Early Stages
Not known.
Larval Foodplant
Not known.
Range
Assam, throughout Indo-China and the Malay Peninsular,S. China, Borneo, and the Indonesian Islands through to Sulawesi. Another subspecies is found on Taiwan.