Scobura isota or Scobura cephala?

[DaveChiangMai]

Three shots of the same individual from Chiang Dao. This should be S. isota I think, but images across the web are somewhat variable and finding a diagnostic feature appears difficult.

25029

25030

25031

[Psyche]

They are Scobura isota.
http://yutaka.it-n.jp/hes/91680001.html

S. cephala have on the underside, an extra spot in HW space 1b that is as large as spot 2.
http://yutaka.it-n.jp/hes/91670001.html

TL Seow: Cheers.

[DaveChiangMai]

Many thanks for that clarification. Evidently some images on the web are incorrectly assigned.