Cyana bianca? Id help please

[Shihan]

24184
Southeast Bangladesh

[Psyche]

It does look correct for the female Cyana bianca.although the bands are narrower here.
The females of C. bianca & coccinea are very similar.

They both have the red bands with black margins ,& the male have 3 black spots while the female have 2.

Other lack the black edgings eg catorhoda (female -1 black spot) & bellissima (female 3 spots).

Cyana bianca.
male ;note in the male the postmedial band is forked at the costa.
http://www.jpmoth.org/~dmoth/Digital_Moths_of_Asia/90_NOCTUOIDEA/02_EREBIDAE/02_ARCTIINAE/04_Lithosiinae/21_Cyana/Cyana%20bianca/Cyana%20bianca.htm
female. note white area (with the black spots) is wide at the lower margin.
https://c1.staticflickr.com/9/8279/8964386691_bdf57c9b80_b.jpg
2nd pix.
http://missl0nelyhearts.tumblr.com/post/40886753408/sinobug-cyana-sp-lithosiini-arctiinae


Cyana coccinea.
female note white with the black spots is narrowed towards the lower margin.
http://www.chiba-muse.or.jp/NATURAL/special/moth/Haruta_Collection/77_Arctiidae/04_Lithosiinae/21_Cyana/Cyana_coccinea/Cyana_coccinea.htm
http://www.phuketnaturetours.com/Images/Moths%20500/Cyana%20coccinea%20-%20female%2001%20-%20%20Khao%20Soi%20Dao%20WS.jpg
male.
http://www.jpmoth.org/~dmoth/Digital_Moths_of_Asia/90_NOCTUOIDEA/02_EREBIDAE/02_ARCTIINAE/04_Lithosiinae/21_Cyana/Cyana%20coccinea/Cyana%20coccinea.htm
male & female.
http://www.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxid=508738

other species.
http://archive.org/stream/catalogueoflepid13brit#page/n131/mode/2up
http://archive.org/stream/catalogueoflepid13brit#page/n127/mode/2up

TL Seow:Cheers.

[Psyche]

Should probably be Cyana determinata.

The males of C. bianca & determinata are nearly identical.
I am not sure if the images here are correctly assigned.
http://www.jpmoth.org/~dmoth/Digital_Moths_of_Asia/90_NOCTUOIDEA/02_EREBIDAE/02_ARCTIINAE/04_Lithosiinae/21_Cyana/Cyana%20bianca/Cyana%20bianca.htm
http://www.jpmoth.org/~dmoth/Digital_Moths_of_Asia/90_NOCTUOIDEA/02_EREBIDAE/02_ARCTIINAE/04_Lithosiinae/21_Cyana/Cyana%20determinata/Cyana%20determinata.htm

According to the original textx the female of C. determinata have 2 black spots & that of C. bianca have only one.
http://archive.org/stream/catalogueoflepid2brituoft#page/323/mode/1up
http://www.mothsofborneo.com/part-7/nudariini/nudariini_1_13.php

The range of C. determinata is said to include all of Thailand , Indochina Yunnan & would probably include Myanmar into Bangladesh.


TL Seow: Cheers.

[Psyche]

Oops!. It is correct as Cyana bianca.

What the text meant is that the female C. bianca has one discoidal(or discocellular) spot instead of the two in the male.
There is still another black spot in the end of the cell ie making two black spots , the male would have 3 black spots.
http://archive.org/stream/catalogueoflepid2brituoft#page/323/mode/1up

Since C. determinata does not occur in the Indian area, it is C. bianca.


TL Seow: Cheers.

[Shihan]

Thank you Dr. TL Seow :)