Thread subject: Diptera.info :: odd growth on face = sticky substance

Posted by johnes81 on 12-09-2017 11:39
#19

Thank You for your Time Sir Paul. I appreciate your comments in this thread.

I have the Blowflies of Fennoscandia and Denmark. I have looked at this fly for days and I cannot agree that it is floralis. I've tried to make it be floralis but no success. I notice that Dr. Rognes mentions that one of the spermathecae has an "abnormal biolbed apex" but it certainly doesn't look like the one in my photo. The spermatheca in my photo is strongly biolobed like a heart shape. Fascinating! I suppose that it could be an extreme abnormality but the ovipositor doesn't match floralis. I conclude that it is Onesia but it looks strange. I wonder if the ovipositor is also an abnormality?

I know that Dr. Rognes mentions the possibility of a weak presutural ia on floralis but how does one define weak? I see a well-developed bristle. The bristle is not strong but it is well developed in my opinion. [attachment will be posted later today]

I will post some photos of all three problematic species. You can see that they all have similarities but nothing is conclusive to floralis. I intend to write to Dr. Rognes about this. Meantime, I'm happy to include everyone with this subject. Thus, I will add some photos here today. Maybe more opinions will help...