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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Aschiza" » Hover Flies (Syrphidae) » Eristalinae » Eristalini » Eristalina » Drone Flies (Eristalis) » Subgenus Eoseristalis (Eristalis Subgenus Eoseristalis) » Eristalis arbustorum
Photo#1395821
Hourglass Syrphid Fly...Eristalinae? - Eristalis arbustorum - female
Copyright © 2017 Arthur Scott Macmillan

Hourglass Syrphid Fly...Eristalinae? - Eristalis arbustorum - Female
Santa Cruz, Randall Morgan's Garden, Santa Cruz County, California, USA
June 25, 2017
Size: ~15mm
NOTE: The unusual projection on the face! To protect? To attack with? This may be more common than I know of. Flies don't always like their faces photographed.

NOTE: The vertical part of the calypters. It seems fairly common for flies in this subfamily (guessing Eristalinae)to have really large calypters.

Images of this individual: tag all
Hourglass Syrphid Fly...Eristalinae? - Eristalis arbustorum - female Hourglass Syrphid Fly...Eristalinae? - Eristalis arbustorum - female Hourglass Syrphid Fly...Eristalinae? - Eristalis arbustorum - female Hourglass Syrphid Fly...Eristalinae? - Eristalis arbustorum - female Hourglass Syrphid Fly...Eristalinae? - Eristalis arbustorum - female
Contributed by Arthur Scott Macmillan on 2 July, 2017 - 2:34pm
Last updated 2 July, 2017 - 7:45pm

Moved
Moved from Syrphid Flies.
… Ken Wolgemuth, 2 July, 2017 - 7:45pm

The vertical part you are tal
The vertical part you are talking about is the alula or axillary lobe, part of the wing and not what are usually referred to as the calypters which lie below the base of the wing. A facial prominence is a common feature in Syrphidae. It may aid in emerging from the puparium but is not used in defence or attack.
… Bill Dean, 2 July, 2017 - 7:01pm

Moved
Moved from ID Request.
… Ken Wolgemuth, 2 July, 2017 - 6:49pm

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