Request for ID - Suffused Flash or Scarlet Flash?

[David Chan]

Dear Dr Seow,

Is this a Suffused Flash (Rapala suffusa barthema) or Scarlet Flash (Rapala dieneces dieneces)? How do we tell them apart? The photo was taken at Upper Seletar Reservoir.

Thanks a lot.
David Chan

[Psyche]

It is Rapala dieneces male.

In R dieneces, suffusa & cowani, the HW postdiscal band forms an arch or dome in space 1b (whre the speckled patch is)

R. dieneces. UN more brown ,female may be yellowish. FW band fairly straight ;HW orange crown often better defined.
males
http://4.bp.blogspot.com/-Nq8JtCdenzg/T6ex5MpgMGI/AAAAAAAAFzk/7O9lOYPyrcg/s1600/DSC0150+Scarlet+Flash.jpg
http://4.bp.blogspot.com/-ca3djKvy5NY/T6ew2H0RtvI/AAAAAAAAFzU/RCwL9W3TwKY/s640/DSC0136+Scarlet+Flash.jpg
females
http://www.butterflycircle.com/checklist/mugshots/Rapala%20suffusa%20barthema/Suffused%20Flash%20-%20Chng.jpg
https://c1.staticflickr.com/3/2891/33486173603_638ecd103c_c.jpg
http://3.bp.blogspot.com/-PiuoC8DV71A/UC7NytEXPAI/AAAAAAAAGbw/yN-OYl_TEWM/s1600/DSC2363+Suffused+Flash.jpg

R. suffusa. often strongly chrome yellow; FW band curved in ,or strongly bent; HW orange crown vague.
males.
https://c2.staticflickr.com/8/7376/9857490685_e0452d3eda_b.jpg
https://c1.staticflickr.com/5/4183/34399654575_632df61430_c.jpg
https://c1.staticflickr.com/5/4188/34357928916_217742bda1_c.jpg
https://alanowyong.files.wordpress.com/2016/08/p8090531-001.jpg?w=604
females
http://farm4.static.flickr.com/3301/3474959465_126294c2e6.jpg
https://wanderingbutterflyeffect.files.wordpress.com/2013/04/suffused-flash.jpg
http://www.butterflycircle.com/checklist/mugshots/Rapala%20suffusa%20barthema/Rapala-suffusa-barthema-(-Suffused-Flash)-Femaile-...-Sunny-Chir.jpg

R. cowani Un strongly grey.

The female Rapala manea is often confused with R. dieneces.
HW postdiscal band in space 1b mostly straight & slanted. orange crown well-defined.
http://img15.deviantart.net/7f85/i/2013/160/b/0/slate_flash_090613_by_inckurei-d68df6g.jpg


TL Seow: CHeers.

[David Chan]

Dear Dr Seow,

Thanks a lot for the assistance.

Best regards,
David Chan