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Diptera.info :: Identification queries :: Diptera (adults)
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Culex pipiens? = Culex pipiens group
johnes81
#1 Print Post
Posted on 11-09-2017 18:51
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Berlin - September 11 - 5.2mm

I have no experience with identification of mosquitos. I don't see bands on the legs, so I assume this to be a Culex species. I see a long proboscis, so a female? What is necessary for a species level id? I have a specimen.
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Edited by johnes81 on 13-09-2017 22:24
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Tony Irwin
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Posted on 12-09-2017 11:45
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The lack of leg bands, the abdomen shape (blunt-ended, not tapered) and the overall appearance together point to a Culex female. There appears to be only one hind leg on your specimen, and most of its tarsal joints are missing, but the metatarsus (basal joint) looks as though it is the same length as the tibia (not shorter), so this excludes Culex modestus. There are pale marks at the base of each abdominal segment, so this excludes Culex territans, leaving us with one of the species in the Culex pipiens group, which is as far as I can take it from the photo.
Edited by Tony Irwin on 12-09-2017 11:46
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johnes81
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Posted on 12-09-2017 12:27
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Thank You very much Sir Tony. I have no experience with mosquitos other than being lunch for their appetite Smile

I figure it could be Culex pipiens. I downloaded a bunch of pdf files but I am too busy today to read them. I want to get this under the microscope. I hope that you revisit this thread whenever I post photos from the microscope. I want to learn more about them. I just realized something: I like chironomids and I remember that they are called non-biting midges. I see photos of the male Culex with the feathery antennae and I think about Chironomids. Suddenly it occurs to me: mosquitos are biting midges. I get it now. I'm an idiot sometimes. Now it makes sense to me.

I'll update this post when I have the time to do so...

Thank You.
John and Nini
 
johnes81
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Posted on 13-09-2017 20:45
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finally got around to the microcope.

first photo shows a tri-lobed scutellum which is supposed to be indicative of a Culex species, yes?
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johnes81
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Posted on 13-09-2017 20:46
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antenna (including crop of the tip)
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johnes81
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Posted on 13-09-2017 20:47
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palps are short
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johnes81
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Posted on 13-09-2017 20:49
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this structure is from inside of the proboscis. is this part names the siphon? anyway, it has long tentacles attached to the main stem. I've included the tip of the structure in the photo. I imagine this part to be that which is used to suck the blood.
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johnes81
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Posted on 13-09-2017 20:49
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tip of proboscis
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Edited by johnes81 on 13-09-2017 20:50
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johnes81
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Posted on 13-09-2017 20:50
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wing
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johnes81
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Posted on 13-09-2017 20:51
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abdomen lateral view
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johnes81
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Posted on 13-09-2017 20:51
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scales
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johnes81
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Posted on 13-09-2017 20:52
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ovipositor
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johnes81
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Posted on 13-09-2017 21:16
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hopefully we can name this mosquito. following is a list of Culex for Germany but I have no idea about Berlin. Some of these may not be recorded in Berlin:

Culex modestus
Culex pipiens
Culex torrentium
Culex hortensis
Culex martinii
Culex territans
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Tony Irwin
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Posted on 13-09-2017 21:22
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The tri-lobed scutellum is indicative of the subfamily Culicinae, which includes Culex, Culiseta, Aedes, Ochlerotatus, Coquillettidia and Orthopodomyia among others. Only the Anophelinae have a simply rounded scutellum. The palps are indeed short, which is another good way to distinguish the females of Culicinae from Anophelinae. With the exception of Aedes (sensu stricto), all male mosquitoes have long palps. Apart from the genitalia, the sexes can be separated by the antennae, which are more densely and longer-haired in the male. The dense covering of scales on the abdomen is typical of Culicinae, but not Anophelinae. But beware of old specimens - the scales are easily lost.

Tony
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Tony Irwin
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Posted on 13-09-2017 21:41
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As I pointed out above, your specimen has pale basal bands on the abdominal tergites. Cx.territans and Cx.hortensis have pale apical bands. Cx.martinii has no bands. Cx.modestus has a shorter hind basitarsus. The differences between female Cx.pipiens and Cx.torrentium are very slight, and rely on having freshly-emerged specimens in good condition. So we can name this mosquito as Culex "pipiens group".
Edited by Tony Irwin on 13-09-2017 21:42
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johnes81
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Posted on 13-09-2017 22:24
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Thank You Sir Tony. I appreciate the extensive amount of data that you have provided here. I'm sure that many other members also appreciate this info.

I had to search for Culex pipiens complex because you suggested pipiens group instead of a species. I see the problem now. We have a case of molecular biology for a positive id. very interesting.

I Thank You very much for everything. Case closed.
John and Nini
 
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