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View Thread :: Identification queries :: Diptera (adults)
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Dima DD
#1 Print Post
Posted on 01-12-2008 01:19
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Location: St.Petersburg, Russia
Posts: 75
Joined: 28.11.05

Dear friends,
this good photo of predaceous gnat (male?) with double large claws is not mine (author: Vladimir Anikeev). What gnat is it? Could it be Mycetobiidae?

Russia, Zaraysk (Moscow region), 2008:07:17
Paul Beuk
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Posted on 01-12-2008 08:35
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Location: Netherlands
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Almost looks like mating between Ceratopogonidae. Top one reminds me of images I have seen of Sphaeromias.

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Paul Beuk on
Dima DD
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Posted on 01-12-2008 13:11
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Location: St.Petersburg, Russia
Posts: 75
Joined: 28.11.05

Thank you, Paul!
The upper gnat really looks like Sphaeromias female. However, I have some doubts about the lower one (despite the position of their abdomens)... Do males of Sphaeromias lack that magnificent plumose antennas that I can see on very few images of other Ceratopogonidae males? Is Sphaeromias a biting (blood-sucking) gnat or predaceous?
Edited by Dima DD on 01-12-2008 13:12
John Carr
#4 Print Post
Posted on 29-07-2011 03:39
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Location: Massachusetts, USA
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Joined: 22.10.10

Males of many Ceratopogonidae and most Chironomidae use plumose antennae to listen for females. The male searches for females, who signal availability by flying near a mating swarm.

Males of typical Sphaeromiini do not search for females and have no need for plumose antennae. Females are aerial predators, typically hunting Chironomidae and small Ephemeroptera. The male signals availability by flying near a hunting swarm. If a female happens to catch a male of her own species she will mate as she eats him.

With no need for sensitive antennae, the male antenna plume is often reduced or absent. The male is normally much smaller than the female in groups where the male is eaten.


J.A. Downes 1978. Feeding and mating in the insectivorous Ceratopogoninae (Diptera). Memoirs of the Entomological Society of Canada 104.
Paul Beuk
#5 Print Post
Posted on 24-06-2019 13:49
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Location: Netherlands
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Sphaeromias pictus devouring another ceratopogonid. I first though a simuliid, but the antennae do not fit. But as you can see the wing venation of the prey near the bottom, I am quite confident.
Edited by Paul Beuk on 24-06-2019 13:51

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Paul Beuk on
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18.09.19 20:06
Jewell699, you should post it in the forum, not submit it for the gallery.

15.09.19 20:41
Jewelm699 - did you upload it to a forum (which one?) or the gallery? I can't find it.

11.09.19 13:15
I’m hoping someone can identify the phoridae maggot or pupae I just uploaded.

28.08.19 14:29
Rafael p is legs and f1 is fore femur

26.08.19 17:13
If you experienced a very sluggish site recently, it may have been because someone tried to upload a maliciuous script by force. It appears to have failed. The visitor was blocked further access.

25.07.19 15:13
@Paul Beuk Thanks mate!! Best wishes!

22.07.19 15:09
Where are the meaning abbreviations of Lindner's series Die Fliegen der Palaearktischen Region, ie. f1: anterior femur, ...and what about "p"? (I don't possess volume I)

17.07.19 19:37
Yup, you can view the wing from above (dorsal side) and from beneath (ventral side).

16.07.19 13:31
Hey Dipterists! Quick Question: Vein r2+3 bare beneath. I've always assumed that this is below as in when you look at the wing flat. Am I right? Thank youuuuu! Pfft

18.06.19 08:07

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