There are other examples of U. selma which shows the HW spots in space 2, 3, 4, & 5 are poorly formed or absent.
https://en.wikipedia.org/wiki/Udara_...maMUpUnAC1.jpg
https://en.wikipedia.org/wiki/Udara_...maFUpUnAC1.jpg
https://en.wikipedia.org/wiki/Udara_...esMUpUnAC1.jpg
U. camenae.
https://encrypted-tbn0.gstatic.com/i...a_xKQ&usqp=CAU
https://www.wikiwand.com/en/Udara_camenae
TL Seow;Cheers.