They are both Telicota besta male.

Do not be confused by the colour in photos as much depends on the white balance.

Here is a review.

T. colon male :FW spots staggered, ie not in line; spots 4 & 5 often distorted.
https://1.bp.blogspot.com/-iRfNeV5wQ...t-LemonTea.jpg


T. augias male; Always a uniform deep orange including face; FW spots 4 & 5 equal; HW veins not dark-dusted.
http://1.bp.blogspot.com/-Hp7OPF_eJ6...as-augias).jpg
http://2.bp.blogspot.com/-6riT3uzrel...ias_male_1.jpg


T. linna male: FW spots 4 & 5 equal; HW veins not darken ;ground colour dusky; Face & lower abdomen pale.
https://2.bp.blogspot.com/-79Gj7N-1G...TL_male_01.jpg
https://alchetron.com/cdn/telicota-6...resize-750.jpg


T. besta male; FW spots 4 & 5 equal; HW veins strongly raised & may be lightly darken; only face paler.
https://2.bp.blogspot.com/-EcRIOq2iv...t_male_-04.jpg
http://1.bp.blogspot.com/-UaQyq4Qv0D...B_adult_01.jpg
http://2.bp.blogspot.com/-LFTJK1e_eF...C_0409-001.JPG


T. bambusae .I am unsure if this occur in Singapore.
Continental specise but feed on common grasses such as rice, bamboo, maize & sugar cane.
Small species FW 15mm, compare with T besta 17-20mm.
FW spots 4 & 5 equal .FW short & spots wide; HW veins not darken.face paler.
https://www.flickr.com/photos/maanay/50385196348
https://commons.wikimedia.org/wiki/F...B_DSC_3871.jpg




TL Seow: Cheers.