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Rhopalomyia undescribed-species-on-amorpha
Photo#738225
Copyright © 2013
Brad Bolduan
Gall? -
Rhopalomyia undescribed-species-on-amorpha
String Lake Waterfowl Production Area, Jackson County, Minnesota, USA
June 28, 2012
Probably ~1/4 inch. On Lead Plant (Amorpha canescens). Any information appreciated - I think I saw this on lead plant in a few areas. On dry hill prairie.
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Contributed by
Brad Bolduan
on 15 January, 2013 - 9:28pm
Last updated 16 January, 2013 - 3:56pm
Moved
Moved from
Rhopalomyia
.
…
Charley Eiseman
, 16 January, 2013 - 3:56pm
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Moved
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…
Charley Eiseman
, 16 January, 2013 - 3:50pm
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Rhopalomyia sp.
These are caused by an undescribed species of gall midge--apparently no specimens of the gallmaker exist
(
1
)
. If you find these again, Dr. Gagne would probably be interested in examining them and the larvae within.
…
Charley Eiseman
, 15 January, 2013 - 9:53pm
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Sorry,
I forgot about the potential desire to see specimens. I have seen these galls in at least three locations in at least two Minnesota counties (Jackson and LeSueur) in the past two years (July and August as I recall). If someone wants specimens, please let me know. I should be able to secure specimens next year.
…
Brad Bolduan
, 29 October, 2015 - 10:29pm
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I see these Leadplant conical galls
on most prairie remnants in Iowa but have yet to see them on a prairie planting.
I do wish someone could rear an adult. I have never been able to rear an adult fly, no matter when I collect the galls, although have gotten an occasional parasitoid
but am not sure if it was from the same type of gall (see
for gall question).
…
MJ Hatfield
, 21 August, 2016 - 9:24am
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Lead Plant galls
I just noticed that I did see these galls in a restoration this July. However, it is a reasonably small restoration with a high density of lead plant which is a adjacent to remnant prairie in Joseph A. Tauer Prairie SNA. Also present were Walshia amorphella galls and
- all on planted lead plant. I have yet to see them on a stand-alone restoration.
…
Brad Bolduan
, 27 January, 2017 - 9:32pm
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Two things:
Thanks for the info that you've found both the galls and
W. amorphella
in a prairie planting.
Also, would certainly welcome you trying to rear the lep larva. I've tried several times with a successful rearing to adult (moth) only once
Third thing: have you found these
on Lead plant in a planting?
OK, fourth: how about these
?
…
MJ Hatfield
, 28 January, 2017 - 5:44am
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MJ,
Thank you for providing me with information through the work you put on BugGuide.
Many of these insects are somewhat of a tangent for me, not my principle focus so I do very little rearing. I also do most of my observation on sites where I need permits to collect - some places I have permits for some species, most of my collections come from my limited time on private property.
Regarding the Amorphicola pallida. I am not sure I have seen that species anywhere; however, I suspect I would easily over look it. I am amazed how many times I am going through plant photos and there are insects or spiders of that size that I did not notice in the field. I generally do not pursue them as I have limited photos, but I do not recall seeing that species or anything like it on lead plant.
More interesting to me is item #4. I do not recall seeing anything similar in a restoration, but it doesn't mean I haven't. Sometimes I do not realize I am in a small restoration in a larger remnant complex. I have collected something similar from a dry hill prairie in Yellow Medicine County, MN. I have pressed specimens of the leaves and a preserved larva in EtOH which I hope to send to Ray Gagne as soon as I get through my photos and permit reports. I was not aware that you had previously encountered that species [group?]. I will send you some images and additional information by email.
…
Brad Bolduan
, 28 January, 2017 - 8:08am
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I have similar experience
I also raised a parasitoid from the galls this year, but so far no luck with midges. I collected these galls from several locations as far northwest as western Yellow Medicine County this year (about as far NW as I have searched), but I lost most material due to mold issues before anything emerged. I also have not noticed these galls on "restored prairie", but I do not spend much time on restored prairie. I also really wondered if the two gall shapes were different species, but minimally they do seem to co-occur. I also found similar galls (the conical form) on flowers this year in at least two counties (I fear I may have deleted the photos, but I have a specimen).
…
Brad Bolduan
, 21 August, 2016 - 10:43am
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Keep trying for an adult fly!
I've been rearing for years and still fail more than I succeed. I find there is a fine line between desiccation and rot and I have yet to master it.
…
MJ Hatfield
, 21 August, 2016 - 3:05pm
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Yes
As far as I know, nothing further has been learned about this species, and there are still no specimens of larvae or adults.
…
Charley Eiseman
, 30 October, 2015 - 7:16am
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Thank you
Thank you very much for the information. That is very interesting. I will see what I can do - I will be looking for them next year.
…
Brad Bolduan
, 16 January, 2013 - 12:30am
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