Hi Neeta! I think I posted in another question. anyways I found these pictures from Grain Research Training and Storage Management Cell, UAF, Faisalabad. Not sure where they got the pics though
This one for the pupae (image still from them). They have a page on facebook, maybe you could contact them. Goodluck!
Hi again! I did a little research and found that images 1 and 3 are for T. confusum. Instead, I found this very helpful website from ARS, USDA containing everything from rearing to sexing. cheers!
http://ars.usda.gov/Research/docs.htm?docid=12892
You can also find some information here: http://www.science-explained.com/techniques/rna-interference-in-tribolium/
Sex determination is easiest in the pupal stage but also possible in the adult stage. In the adults you can pinch their abdomen with tweezers, the eggtube will pop-out in females. It will take some practice and the pupal method is more reliable but when necessary the adults can be sexed too.
We can differentiate between male and female through the posterior end of pupae. On the tip of the abdomen of pupa, there are 2 long projections called the urogomphi
On females, the genital papillae are pointy, with 2 darker dots on the tip of each, and roughly half the size of the urogomphi (they resemble tiny fingers).
On males, the genital papillae are stubby, conjoined, and barely noticeable. If female papillae resemble fingers, these look more like 2 conjoined thumbs.
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