Id help please

[Psyche]

Theretra lucasii & latreillii.

T. lucasii was formerly treated as a subspecies of T. latreillii.

T. lucasii is oriental while T. latreillii is Australasian.

T. lucasii. Wings triangular with straight margins, like a jet fighter.
FW with extra submarginal lines beyond the dotted postmedial visible.
https://tpittaway.tripod.com/china/t_luc.htm

T. latreillii.
FW margin more convex & submarginal lines not visible.
http://lepidoptera.butterflyhouse.co...atreillii.html

[Psyche]

Theretra boisduvalii & T. sumatrensis.


Two species were formerly confused as one.
Both have the postmedial running from the apex marked out by dots on the veins.

T. boisduvalii.
Upperside greenish brown.
https://www.flickr.com/photos/hkmoths/2921757996/
https://eol.org/pages/638030


T. sumatrensis.
Upperside brown with a darker shading medially..
https://en.wikipedia.org/wiki/Theret...tji_Valley.jpg

[Psyche]

1, 2, 4 & 5.
Theretra clotho.

3. Theretra boisduvalii.

[Psyche]

6, 9, 10.
Theretra lucasii.

7 & 8.
T. clotho.

[Psyche]

11 & 15.
Theretra lucasii.

12, 13, & 14.
Theretra clotho



TL Seow: Cheers.

[Psyche]

I see from the Sphingidae series that T. tibetiana have been reported from Bhutan & Manipur.

They are practically identical.
Perhaps the pale line inner to the postmedial running from the apex is better defined in T. clotho.
http://sphingidae.myspecies.info/taxonomy/term/5200
http://sphingidae.myspecies.info/taxonomy/term/2805

2 & 4 where this line is very weak might be possible T. tibetiana.


TL Seow: Cheers.

[ButterflyWitch]

Thank you so much sir...

[Psyche]

13 is also probably T. tibetiana since the pale line adjacent to the dark postmedial is practically obsolete.


Other confirmed examples of T. tibetiana & clotho.

T. tibetiana.
http://dearlep.tw/species.html?namec...07c69ace4c2da8

T. clotho. P. Malaysia & Singapore.
https://www.flickr.com/photos/gancw1/22793159381/
https://inaturalist-open-data.s3.ama...jpg?1545575529



TL Seow; Cheers.