I would like to discuss about observations of Strepsigonia sp : 7 observations of S. affinis – /taxa/625440-Strepsigonia-affinis + 1 observation from me that I placed in S. placida (obs4) - /taxa/1158762-Strepsigonia-placida.
I would like to give you my opinion on these observations and then find out what you think.
Obs. from @gancw1 (obs3 - /observations/9372606 ): I would like to say S. placida .
According to information found in the literature:
- General shape: S. affinis has HW strongly angled as obs1 and 2 while S. placida has hindwing slightly angled for the female and not angled but with a tornus diagnostically produced for the male as obs3 and 4.
- General coloration: S. placida is darker than S. affinis.
- Pattern: the included space between the wavy line and the strongly dentate line at middle of costa on FW is pale rufous for S. affinis. S. placida is more uniform. For S. affinis there is a submarginal line pale and lunulate clearly visible on obs1 and 2 (as it is described in literature) but not on obs. 3 and 4.
- Dots: HW with 2 black dots for S. affinis as obs1 and 2 and 3 black dots for S. placida as obs3 and 4 (on my obs the 3rd dot is a bit hidden by the hairs on the inner margin).
- Distribution: S. placida has a wider distribution including Burma than S. affinis (restricted to Borneo and Malaysia). So I guess there is more chance that I can observe S. placida in Sumatra rather than S. affinis.
From all this information, i would say obs1 and 2 are S. affinis and obs 3 and 4 are both male S. placida.
Regarding the other observations of @gancw1 :
By the shape and general pattern (darker, 3 dots on HW …), i would say S. placida. But the color is not uniform and I cannot find any mention of the dark brown area on HW in the literature. So maybe Strepsigonia sp?
These are just my suggestions. I may be completely wrong, that’s why I would be happy to hear from your opinion and discuss it with you.