Diptera.info :: Identification queries :: Diptera (adults)
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 Dolichopodidae II
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| Robert Heemskerk |
Posted on 19-08-2006 01:03
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 Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
Hello flyforum, Also in the polder, next to a road in a little pool. This time a mother with it's little child on the back.., showing the world  These flies looks different to my other 'Dolichopodidae'-topic. Much lighter, whitish, grey and silver. Is this also Dolichopodidae? Robert Heemskerk, Robert Heemskerk attached the following image:  [86.61Kb] Edited by Robert Heemskerk on 19-08-2006 01:04 |
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| Robert Heemskerk |
Posted on 19-08-2006 01:04
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
two
Robert Heemskerk attached the following image:  [84.48Kb] Edited by Robert Heemskerk on 19-08-2006 01:04 |
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| Nikita Vikhrev |
Posted on 19-08-2006 08:16
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 Member Location: Moscow, Russia Posts: 9337 Joined: 24.05.05 |
Sure Dolichopodidae. For me couple looks Hydrophorus sp. Nikita Nikita Vikhrev - Zool Museum of Moscow University |
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| Robert Heemskerk |
Posted on 20-08-2006 01:34
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
hi Nikita, thank you very much for your reaction. It isn't the specie yet, but at this time I am glad to hear the sub-family. I was surprised about the size of the Dolichopodidae-family! That is a lot of different dolichopidae-flies!! robert heemskerk, |
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| Chen Young |
Posted on 20-08-2006 02:37
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 Member Location: Pittsburgh, PENNSYLVANIA USA Posts: 169 Joined: 25.08.05 |
This image shows an interesting behave of the male rides on the female. Just wonder if this is a Precopulatory or Postcopulatory behave in Dolichopodidae? |
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| Kahis |
Posted on 20-08-2006 09:00
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 Member Location: Helsinki, Finland Posts: 1999 Joined: 02.09.04 |
The only paper I know about on the topic of guarding in Dolichopodidae is Dyte, C.E. 1988. Mate guarding and sex ratio in Hydrophorus oceanus (Macquart) (Diptera: Dolichopodidae). The Entomologist 107: 122-126. Guarding is very common in Hydrophorus praecox, a common species on coastal sands. I have severl pairs in my collection that are still locked in the 'embrace'. The female can fly with a male hanging on but the flight is clearly slower than normal and the pairs are easier to catch than single flies. I do not know if it is pre- or postcopulatiroy, that would be a nice little study for someone. Kahis |
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| Chen Young |
Posted on 20-08-2006 13:10
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Member Location: Pittsburgh, PENNSYLVANIA USA Posts: 169 Joined: 25.08.05 |
Thanks Kahis for the info on mate guarding behave on Dolichopodidae. Both Pre- and Post-copulatory mate gurading are common among limonid crane flies, especiall those that females lay their eggs in wet habitats. Here is an example of Eriopter cana doing it, which is a post- guarding . Species of Antocha is known for their pre- guardings. |
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