Diptera.info :: Identification queries :: Diptera (adults)
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 Gender determination T. grossa
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| cyprinoid |
Posted on 24-07-2010 11:57
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 Member Location: Norway Posts: 1751 Joined: 19.06.09 |
How do I determine the gender of Tachina grossa?
Hyperbolizer |
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| ChrisR |
Posted on 24-07-2010 16:31
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 Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
The usual things ... presence/absence of: large male genital capsule; long pulvilli/claws; and wide/narrows frons.
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| cyprinoid |
Posted on 24-07-2010 21:03
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Member Location: Norway Posts: 1751 Joined: 19.06.09 |
Ok, thank you. I have one that is quite a bit smaller than the others and has a lighter colour on the head. I thought maybe it could be a male. Hyperbolizer |
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| ChrisR |
Posted on 24-07-2010 21:05
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Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
It's impossible to go on size or colour really - just check the features I listed and it should tell you 
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| cyprinoid |
Posted on 24-07-2010 21:51
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Member Location: Norway Posts: 1751 Joined: 19.06.09 |
Yes, I should have added that with your help I see they are all females 
Hyperbolizer |
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