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Diptera.info :: Identification queries :: Diptera (adults)
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Lucilia sericata
Tony T
#1 Print Post
Posted on 03-09-2007 00:56
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Location: New Brunswick, Canada
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1st September 2007, NB, Canada. Length: 11mm
Caught in fish-bait trap, see HERE
Keys in North America to Lucilia sericata. Note the 3 postsutural setae on thorax
Tony T attached the following image:


[105.21Kb]
Edited by Tony T on 17-09-2007 16:46
 
Susan R Walter
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Posted on 08-09-2007 18:26
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Location: Touraine du Sud, central France
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Seems reasonable to me. Only query I would have is how many anterodorsal bristles on the mid-tibia? I can't work it out from even your excellent pics.

Jorge - do you want to do a coloring in job on the meron to highlight the meral setae? An important character for separating Calliphoridae from Muscidae especially, and not usually visible in a photo.
Susan
 
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Tony T
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Posted on 08-09-2007 18:49
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Susan R Walter wrote:
how many anterodorsal bristles on the mid-tibia?


I "dunno"Pfft. Keyed it out using Whitworth 2006.
Does this close-up help?

2.45 pm Saturday, 32C and horrendus humidity, too hot to collect. Doesn't someone know that this is Atlantic Canada in September; supposed to be coolSad
Tony T attached the following image:


[110.63Kb]
 
crex
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Posted on 08-09-2007 19:15
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Location: Sweden
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Tony T wrote:
2.45 pm Saturday, 32C and horrendus humidity, too hot to collect. Doesn't someone know that this is Atlantic Canada in September; supposed to be coolSad


You can have some of our weather. The autumn came way too soon for my taste. A few degrees above 10C and raining today Sad
 
Susan R Walter
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Posted on 09-09-2007 11:32
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OK, so 1 ad on T2 - as it should be for L sericata. I am hopeful that I have cracked this species. Certainly my local ones seem to consistently show the following characters, all of which are pretty easy to see, even in photos:

1. Creamy yellow basicosta (most other species dark).
2. A single anterodorsal seta on the middle tibia.
3. A wide frons, with the frontal vitta being about twice the width of the fronto-orbital plates.
4. 3 post sutural acrostichal setae.
5. Orange palps.
6. Long first flagellomere, at least 4 times as long as wide.

The above are listed in more or less the order I would look for them to build up a case for sericata. In addition you could check for conspicuous dusting on the abdomen, which if you get just the right angle often has an obvious median line; and I notice that Whitworth mentions a small ocellular triangle in the females, not reaching half way to the lunule.

L sericata is by far my most common local species, and I suspect one of the easiest to key out. The caveat I would add to my observations is that I have been looking almost exclusively at specimens from my local area ie east London and the Thames Estuary. I have not had a chance to look at any manky old museum specimens or any French specimens yet.
Susan
 
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jorgemotalmeida
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Posted on 09-09-2007 12:39
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Location: Viseu - PORTUGAL
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Susan R Walter wrote:
Seems reasonable to me. Only query I would have is how many anterodorsal bristles on the mid-tibia? I can't work it out from even your excellent pics.

Jorge - do you want to do a coloring in job on the meron to highlight the meral setae? An important character for separating Calliphoridae from Muscidae especially, and not usually visible in a photo.



yep. I'm doing that. Grin But it will take a while. Wink ok? Smile
 
http://www.flickr.com/photos/superegnum
Susan R Walter
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Posted on 10-09-2007 17:34
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Great, thanks Jorge - it's really good of you to spend the time. Smile
Susan
 
http://loirenature.blogspot.com/
jorgemotalmeida
#8 Print Post
Posted on 10-09-2007 18:00
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in next days I will be very busy. But I will try to do all I propose. Wink
Thanks for your support and help.
 
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Tony, I HAD a blank in the file name. Sorry!

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Tony, thanks! I tried it (see "Cylindromyia" Wink but don't see the image in the post.

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pjt - just send the post and attached image. Do not preview thread, as this will lose the link to the image,

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