Date: 9/9/20 12:15 pm
From: Tallamy, Douglas <dtallamy...>
Subject: [obol] Re: [COBOL] Page Springs Plumbeous Vireo
Hi folks,

The insect in the bill of Tom's vireo is an antlion (Myrmeleontidae, Neuroptera); although dobsonflies are also Neuroptera, they are very different insects. Nice photos!

Doug Tallamy
University of Delaware, Entomology
From: <obol-bounce...> <obol-bounce...> on behalf of Robert Taylor <dmarc-noreply...>
Sent: Wednesday, September 9, 2020 2:04 PM
To: <or.naturalist...> <or.naturalist...>; M Gonzalez <Towhee...>; larspernorgren <larspernorgren...>
Cc: <COBOL...> <COBOL...>; OBOL Oregon Birders Online <obol...>; Tom Crabtree <tc...>
Subject: [obol] Re: [COBOL] Page Springs Plumbeous Vireo

I don't believe that the insect being referred to is a Dobson Fly. Ant Lions are separate from them.

Dobson Flies are aquatic as a larvae and Ant Lions make those little conical pits in the sand as larvae (Non-aquatic).

Obviously, I could be wrong but if you are looking for larval stages, you would have to search in different environs.

Bob Taylor

On Wednesday, September 9, 2020, 09:57:50 AM PDT, larspernorgren <larspernorgren...> wrote:

The first place l ever saw evidence of ant lions was under a juniper north of Glass Buttes. I think they're quite common in much of Oregon's juniper zone. I'm struck by the late date of this vireo's presence four seasons in a row with circumstantial evidence of breeding. Could the Dobson's fly's annual cycle at Page Springs be involved?

Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: David Vick <or.naturalist...>
Date: 9/9/20 9:20 AM (GMT-08:00)
To: M Gonzalez <Towhee...>
Cc: <COBOL...>, OBOL Oregon Birders Online <obol...>, Tom Crabtree <tc...>
Subject: [obol] Re: [COBOL] Page Springs Plumbeous Vireo

Great photos indeed! However Dr. G, that is a Dobson Fly in its beak, the larval stage of which is an ant lion. They are in a totally different order of insects, Neuroptera meaning nerve-winged which includes the beneficial lacewings. You better order that field guide I emailed about yesterday! Enjoy,


On Tue, Sep 8, 2020 at 11:11 PM M Gonzalez <towhee...><mailto:<towhee...>> wrote:

Nice photos. Especially like the one with the damselfly!


From: "Tom Crabtree" <tc...><mailto:<tc...>>
To: "OBOL Oregon Birders Online" <obol...><mailto:<obol...>>, <COBOL...><mailto:<COBOL...>
Sent: Tuesday, September 8, 2020 7:43:25 PM
Subject: Re: [COBOL] Page Springs Plumbeous Vireo

I added a few more pictures and a sound recording of the Plumbeous Vireo today for those interested.

Tom Crabtree, Bend

Mark Gonzalez
Bend, Oregon
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