Preprint: DNA barcoding Alaskan willow rosette gall makers (Diptera: Cecidomyiidae: Rabdophaga)

I wonder, also, and I intend to continue looking into this. There is some evidence that multiple species may be represented. Dominique Collet, who had worked with this group using morphology of the midges and the galls, believed that there were more species. For example, the gall on Salix sitchensis is different from the rest of the rosette galls considered here, especially in that one gall often contains multiple larvae; the rest of the Alaskan rosette galls each contain a single larva. Also, there are places on the southern Kenai Peninsula where Salix barclayi is galled, but all Salix sitchensis at the same site is not galled, suggesting that one kind of gall maker is present while the other is absent.