Id help please

[ButterflyWitch]

Good morning Dr. Seow Sir
These all Theretra sp. Sighted in Tripura...
Need your guidance
Thank you in advance...

1. Theretra clotho/tibetiana?

27157

2. Theretra clotho/tibetiana?

27158

3. Theretra boisduvalii?

27159

4. Theretra clotho?

27160

5. Theretra clotho?

27161

6. Theretra lucasii/ latreillii?

27162

7. Theretra clotho?

27163

8. Theretra clotho?

27164

9. Theretra lucasii/ latreillii?

27165

10. Theretra lucasii/ latreillii?

27166

11. Theretra?

27167

12. Theretra clotho?

27168

13.Theretra boisduvalii?

27169

14. Theretra clotho?

27170

27171

15. Theretra lucasii/ latreillii?

27172

27173

[Psyche]

Theretra clotho & tibetiana.

It is not possible to differentiate between the two as they are practically identical.

The distribution of the two are slightly different & as far as I can see T. tibetiana has not been recorded in India.

https://tpittaway.tripod.com/china/t_clo.htm
T. clotho is found in Thailand but not T. tibetiana.
https://en.wikipedia.org/wiki/File:Theretra_clotho_MHNT_CUT_2010_0_18_Thailande_ Khao_Yai_National_Park_female.jpg


https://tpittaway.tripod.com/china/t_tib.htm
T. tibetiana is found in Taiwan but not T. clotho.
https://species.wikimedia.org/wiki/Theretra_tibetiana#/media/File:A50-20150416-109_(19513811706).jpg

[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.com.au/sphi/latreillii.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/Theretra_sumatrensis#/media/File:Theretra_sumatrensis,_male,_upperside._Indone sia,_Sumatra,_Korintji_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?namecode=429567&photo_id=50663ae99c438dddd107c69ace4c2da8

T. clotho. P. Malaysia & Singapore.
https://www.flickr.com/photos/gancw1/22793159381/
https://inaturalist-open-data.s3.amazonaws.com/photos/1532845/large.jpg?1545575529



TL Seow; Cheers.