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Eye flies: Amiota & Phortica
Nikita Vikhrev
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Posted on 11-08-2018 23:42
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Location: Moscow, Russia
Posts: 8150
Joined: 24.05.05

Amiota alboguttata и Phortica variegata attract to human face, especially to eyes and ears. It is known that all attracting specimens are males. Anybody knows why males of these species attract to our face?
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Nikita Vikhrev - Zool Museum of Moscow University
Jan Maca
#2 Print Post
Posted on 12-08-2018 13:49

Posts: 273
Joined: 25.03.10

A possible explanation: cherchez la femme
Nikita Vikhrev
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Posted on 12-08-2018 17:24
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Location: Moscow, Russia
Posts: 8150
Joined: 24.05.05

Thank you for your reply Jan. The fact that all specimens collected around face are males really lead to "cherchez la femme" explanation. For example, if one collects flies from horse eyes, the vast majority of Musca, Fannia or Hydrotaea are females which feed on tears.
Edited by Nikita Vikhrev on 13-08-2018 17:06
Nikita Vikhrev - Zool Museum of Moscow University
Nikita Vikhrev
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Posted on 13-08-2018 17:07
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Location: Moscow, Russia
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Joined: 24.05.05

Dear Jan,
today I read your paper with a great interest. Thank you for your kind help.
I also discussed this matter with my friend Dr. Oleg Kosterin (Novosibirsk).
What we have?
1. Male licking presumably salt soil and drinking from presumably brackish pools, while females do not that, are very typical in Lepidoptera (you shortly mentioned it too).
2. Both Drosophylid and Lepidoptera are nectar/sap feeders.
3. You and Domenico Otranto supposed that Amiota & Phortica males produce a large amount of sperm. That is also typical for Lepidoptera.
Oleg offered a new explanation:
A very compact packing a lot of DNA in a lot of sperm nuclei requires a lot of cations like Mg++
Possibly that is why males of Amiota & Phortica specially need animal secretions, while females do not.

Nikita Vikhrev - Zool Museum of Moscow University
#5 Print Post
Posted on 13-08-2018 17:44

Location: Hungary
Posts: 1598
Joined: 04.01.12

Very interesting!

Best regards,

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