Wing vein L4 is truncated, and small amounts of ectopic wing vein are occasionally present. The posterior wing margin is fused to the alula, has larger bristles and is often nicked. (Florence and McGinnis, 1998)

I know the phenotype

Dear Suihong

Since Drosophila is well studied and well documented you can find a lot of sources in the web

Try e.g. the Website Interactive Fly

http://www.sdbonline.org/sites/fly/segment/cubitus.htm

or see figures of the phenotype at

http://www.biology.ualberta.ca/locke.hp/research.htm

or

http://cgslab.com/cgs1/phenotypes.cgi?n=38

all the best

nikola

Hi Nikola,

thanks a lot for sharing with me such useful website. I got the vivid pictures and detailed description in the web and finally got my question solved. Thank you.