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Photo#902709
Hoverfly (Allograpta obliqua) or exotica? - Scaeva pyrastri

Hoverfly (Allograpta obliqua) or exotica? - Scaeva pyrastri
Pleasanton, Alameda County, California, USA
March 22, 2014
Have other Hoverfly (Allograpta obliqua) in my images. I notice this one has a strong dotted bar running up the entire abdomen when previous shots only show smaller in length dotted bar. Is this the same sub-species? Male or female?

Images of this individual: tag all
Hoverfly (Allograpta obliqua) or exotica? - Scaeva pyrastri Hoverfly (Allograpta obliqua) or exotica? - Scaeva pyrastri Hoverfly (Allograpta obliqua) or exotica? - Scaeva pyrastri

Moved

Moved
Moved from Syrphid Flies.

2 more views
Hello, I've added 2 more views that may assist you. Getting a good one of the wing didn't happen. Thanks. Ken.

 
No worries! Those are quite
No worries! Those are quite helpful. So it looks like Scaeva pyrastri (eyes haired, frons yellow), but the wing vein does look straight to me. That makes me think Dasysyrphus (Scaeva's is quite obviously curved upwards). Going through the key to Dasysyrphus, this is Dasysyrphus pacificus.

Those extra pictures really helped - thanks for adding them! Wonderful shots.

 
Thanks
Kelsey thanks for your help and positive ID.

Moved
Moved from ID Request.

Not Allograpta, though it is
Not Allograpta, though it is a syrphid. It looks more like Scaeva pyrastri to me given the abdominal markings (the white marks on the top, not the sides), but I can't be completely certain without a view of the top or ideally the wing. Could also be Dasysyrphus.

Compare for Scaeva...

This is a female - the eyes don't touch or come close to touching at the top.

As a nomenclature tip, "species" is the usual term for a member of a genus - so the genus Canis (dogs, wolves, coyotes, jackals, etc) contains the species Canis lupus (wolf) as well as Canis latrans (coyote). Canis lupus has two subspecies, Canis lupus familiaris (pet dog) and Canis lupus dingo (dingo from Australia). Above that level is family, which is what the hoverflies are (family Syrphidae), and above that is order, which is what flies are (order Diptera).

Wonderful picture, by the way - very striking!

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