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Diptera.info :: Identification queries :: Diptera (adults)
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Muscidae: Helina?
Steve Scholnick
#1 Print Post
Posted on 20-05-2018 01:45
Member

Location: Maryland, USA
Posts: 93
Joined: 25.12.17

I think I’ve got this one keyed out to Helina but, with muscids especially, I’m never sure. Thanks for the help

found in a suburban office park with trees, a stream, and a pond in the vicinity. Maryland, USA
body length 7-8mm
larger images here on Flickr

c1.staticflickr.com/1/832/41318709505_89835bf808_b.jpg

c1.staticflickr.com/1/959/41318709625_6c6a25e914_b.jpg

c1.staticflickr.com/1/953/41318710075_8b32d9510f_b.jpg

c1.staticflickr.com/1/954/41318709875_ae9f677029_b.jpg

c1.staticflickr.com/1/976/41318709685_3c668298a8_b.jpg

view of the hind tibia with the photo on the left from an anterior angle and the one on the right from a posterior angle. The arrows point towards the anterior and are roughly parallel to the body axis
c1.staticflickr.com/1/975/41318709705_5f86b898c8_b.jpg

c1.staticflickr.com/1/824/41318709435_a849676b5b_b.jpg
Edited by Steve Scholnick on 15-11-2019 20:30
 
Steve Scholnick
#2 Print Post
Posted on 14-01-2019 01:45
Member

Location: Maryland, USA
Posts: 93
Joined: 25.12.17

logic/illogic behind my tentative ID here on BugGuide: https://bugguide....ew/1518349
Thanks
Steve
 
Steve Scholnick
#3 Print Post
Posted on 15-11-2019 19:00
Member

Location: Maryland, USA
Posts: 93
Joined: 25.12.17

bump :-)
 
Nikita Vikhrev
#4 Print Post
Posted on 15-11-2019 21:53
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Location: Moscow, Russia
Posts: 8352
Joined: 24.05.05

What is your doubts? If you use Huckett, 1965, the answer will be
Quadrularia laetifica = indeed Helina evecta (a row of hairs on meron is visible on 3rd photo).
Nikita Vikhrev - Zool Museum of Moscow University
 
Steve Scholnick
#5 Print Post
Posted on 16-11-2019 00:16
Member

Location: Maryland, USA
Posts: 93
Joined: 25.12.17

Thanks Nikita. BugGuide has only 1 record of that genus so it will be a nice addition (and that ID was DNA based).

By Huckett 1965 do you mean "The Muscidae of Northern Canada, Alaska, and Greenland (Diptera)"? I don't have access to that one and, besides, I wouldn't have guessed that this paper was relevant given that I live maybe a 1000 miles south of the book's subject area.

You asked what are my doubts. Outside of the fact that when I submitted this one 1.5 years ago I knew even less about muscids that I do now, I submit all of my insect records to a biodiversity survey of Maryland (http://www.maryla.../index.php). Unless it's an insect taxon I know well, I try to get expert confirmation before I submit the photos. There's no point in sending them incorrect IDs. I also include the name of the expert who made or confirmed the ID to back up the submission.

Thanks again
Steve
 
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