Reviewing Neptis photos I think I may have some N. clinia and N. nata confused. Though looking at other images there is a lot of variation and seems difficult to find a reliable feature on which to separate them. Below are three sets of upper and lower side images of three individuals which I have tentatively identified. Comments on the ID and how to differentiate them appreciated please.
Image 1 and 2 - Clear Sailor N. clinia from west Thailand.
Image 3 and 4 - Neptis nata from southeast Thailand.
Image 5 and 6 - Neptic nata from northern central Thailand.
Image 1. N. clinia
b2625 Clear Sailor (Neptis clinia susruta) - Khao Laem 01.JPG
Image 2. N. clinia
b2625 Clear Sailor (Neptis clinia susruta) - Khao Laem 02.JPG
Image 3. N. nata
b2665 Sullied Brown Sailor (Neptis nata adipala) - Khao Soi Dao 01.JPG
Image 4. N. nata
b2665 Sullied Brown Sailor (Neptis nata adipala) - Khao Soi Dao 02.JPG
Image 5. N. nata
b2665 Sullied Brown Sailor (Neptis nata adipala) - Tat Mok 01.JPG
Image 6. N. nata
b2665 Sullied Brown Sailor (Neptis nata adipala) - Tat Mok 02.JPG