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Saffron
05-Jul-2020, 04:25 PM
Dear Dr. Seow sir....I hope you are healthy and fine....I cannot determine whether the following species is Stimula swinhoei or Ancistroides nigrita...There is another similar looking species Apostictopterus fuliginosus...Your valuable guidance will help me identifying these three similar looking species in my future expeditions. The post is from Meghalaya, India.

Thank you in advance
Cheers
:cheers:

Upperr side

26452

Under side

26451

Psyche
05-Jul-2020, 05:27 PM
Ancistroides nigrita.
The wingshape is rather distorted in the first pic.


A. nigrita.
Underside with a pale fascia along the marginal third of the both wings.
https://www.ifoundbutterflies.org/media_images/AncistroidesNigrita/AncistroidesNigrita_KrushnameghKunte_ai453.jpg
https://thaibutterflies.com/wp-content/uploads/2016/07/Ancistroides-nigrita.jpg

Stimula swinhoei.
UnF with the marginal third paler; A large pale area on the dorsum(lower margin) hidden from view ; UnH nearly uniformly dark brown.
https://thaibutterflies.com/project_tag/stimula-swinhoei/
https://www.ifoundbutterflies.org/sp/2802/Stimula-swinhoei

Apostictopterus fuliginosus.
Wings elongate .Underside uniformly dark brown.
https://www.ifoundbutterflies.org/sp/2814/Apostictopterus-fuliginosus

TL Seow: Cheers.