To note that your moth is a male, because of the large light brown patch on the median area adjacent to inner margin.

The introduced to the USA S. litura is very similar, plus Ipomoea aquatica is included in the list of its main hostplants, but it is known to have a restricted distribution there, and is not known from S. America. The other very similar S. littoralis is not known to be established in N. America, and not recorded from S. America.

Yes, you are right, is Spodoptera ornithogalli. Both the patterns of the caterpillar, as well those on the wings and thorax of the moth on your photos, fit to this species (there is some variation in pattern and colouration among individuals, often considerable). Also, the place you found them (I guess Suriname) falls within its distribution in S. America, and Ipomoea is included in the list of hostplants of this species.

Please compare here with very similar individuals to yours (larva and adult):

https://bugguide.net/node/view/844433/bgimage

https://bugguide.net/node/view/237948/bgimage

and check here the difference in some forewing spots from S. dolichos which is found in S. America, too (you probably have already checked this, as you identified it correctly): https://bugguide.net/node/view/873319

Please also check the useful information on the following link:

http://entnemdept.ufl.edu/creatures/veg/leaf/yellowstriped_armyworm.htm

To note that your moth is a male, because of the large light brown patch on the median area adjacent to inner margin.

The introduced to the USA S. litura is very similar, plus Ipomoea aquatica is included in the list of its main hostplants, but it is known to have a restricted distribution there, and is not known from S. America. The other very similar S. littoralis is not known to be established in N. America, and not recorded from S. America.

Hi.,

Kindly Refer this link:

https://www.si.edu/spotlight/buginfo/moths

Athanasios G Mpamnaras thank you again for those useful informations

C K Gomathy also thank you very much