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Photo#701346
Gall on Wingstem - Neolasioptera incisa

Gall on Wingstem - Neolasioptera incisa
Radford, Virginia, USA
September 8, 2012
I'd like an ID, please, for this gall on Verbesina alternifolia.

Moved
Moved from Neolasioptera.

Neolasioptera incisa
Nancy, what you have is Neolasioptera incisa Plakidas (Cecidomyiidae). Verbesina alternifolia is home to two species of Neolasioptera. N. incisa forms galls in the branchlets, while Neolasioptera verbesinae Mohn, forms galls on the main stem. I published a paper on it in 1994.The two species are very different from one another. Its common for two different species of Neolasioptera to utilize the same host plant, but form galls on different meristematic sites.

 
Thank you very much
for the species ID and info, John.
As a novice in biological naming and such, I am very interested in knowing how your name is a part of the species name. Did you discover this species?

 
technicaly, authority name is not a part of species name
however, being indicated after a species name, it means that that person is the author of the taxon name, i.e. the one who described the taxon and duly published the description

 
Ah, yes, I understand,
the binomial is the species name, and the taxonomist may also be given due credit. Thanks for that clarification!

 
Also disambiguation
When two taxonomists use the same name for different species the author name distinguishes them. Rhaphium longicorne Meigen is a different species than Rhaphium longicorne Van Duzee.

Occasionally the same author reuses a species name and the year of description may be added. So Tachytrechus utahensis Harmston and Knowlton 1940 and Tachytrechus utahensis Harmston and Knowlton 1946 are different species. They forgot they had already used the name six years earlier.

Eventually the later name ("junior homonym") will be replaced, but the code of nomenclature provides a way to indicate which instance of the name is meant.

 
Thanks, John.
I appreciate that additional info.

Moved
Moved from Unidentified Galls.
This is an undescribed species.

 
Thanks,
Charley, I appreciate the ID.

Moved
Moved from ID Request.

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