Looks to me like these are all indirect registers of normal cat tracks (i.e., hind feed landing approximately, but not precisely, where the front feet stepped).

Agromyza torta is the first agromyzid known to roll leaves. The rolling is apparently induced during oviposition, and then the larva mines in the rolled leaf. This can be considered a gall, and the hackberry gall inducer A. deserta is a close relative. www.inaturalist.org/observations...

No, have you reared it / do you have specimens / photos of the mines? The only anacua leafminers I know about are moths--Dialectica cordiella (Gracillariidae) and a Bucculatrix that I'm about to describe.

And a paratype of Agromyza dichanthelii, which feeds on deertongue grass and other Dichanthelium spp. (the holotype came from my front yard in Massachusetts): bugguide.net/node/view/11...

Here's the holotype of Agromyza celtitexana (reared by John Schneider from hackberry, in Texas): bugguide.net/node/view/24...

And a paratype of Agromyza dichanthelii, which feeds on deertongue grass and other Dichanthelium spp. (the holotype came from my front yard): bugguide.net/node/view/11...

Huh. No image preview? Well, here's one:

Not related to the "NJ" specimens I was looking at, but definitely of interest since recent literature states this moth was probably introduced in the Pacific Northwest in the early 1900s, and this note clearly documents its presence in Washington by 1893 (apparently introduced from Massachusetts).

Thanks, I wasn't aware of that.

You've never heard of it mining in early instars, have you? Seems to feed exclusively as a leaftier and on buds, as far as I can tell.

It's possible someone sent her some host material from which she reared the specimens. As far as I can tell she didn't publish anything about this species (which at the time was known as Rhopobota vacciniana).

Rhopobota naevana. I'm doing a review/revision of the North American species--the others are all Ilex specialists, mostly starting out as leafminers.

Okay, another one from the same series, which mysteriously has the same date but clearly "90" rather than "91"... but my main question is, cranberry *what*? Oh, I see--"Tortrix."

There is another specimen with the same Murtfeldt label, and it unambiguously says "NJ." It also clearly says "8/20.91", which makes me think the first one says "8/24.91" and not "6/24.91" as I originally thought.

I love those guys. I've found them wandering around inside leaf mines a couple of times!

Interesting idea. I've never seen anything like this before in the thousands of Cameraria mines I've looked at, so I suspect it's something else. These look very much like the exit slits that some leaf-mining larvae make when leaving their mines, but Cameraria larvae all pupate within their mines.

See the influential paper and @undark.org commentary on Monsanto's ghostwriting by Alexander Kaurov & @naomioreskes.bsky.social: undark.org/2025/08/15/o... #pesticides #agtwitter

Not sure, but probably not very many. It's maybe worth noting that a good number of them are photos taken before I was an active iNat user, posted as photo vouchers to cite in my papers on Nantucket leafminers, gall inducers, etc.