Rabdophaga rosariella explained

Rabdophaga rosariella is a species of gall midge which forms galls on sallows (Salix species). It was first described by Jean-Jacques Kieffer in 1897.

Description

The gall is a small rosette, most often in an axillary bud on sallows. In Britain sallow usually refers to S. aurita, S caprea, S. cinerea and the hybrids between these species. The rosette leaves are not obviously hairy and the full grown larva does not have a sternal spatula (i.e. a structure on the underside of the thorax of the final (third) instar larva of Cecidomyiidae).^[1] Larvae of R. rosariella are unique as all other known Rabdophaga larvae have a sternal spatula.^[2]

Distribution

Recorded from Belgium and Great Britain.^{[1] [3]}

Notes and References

1. Book: Redfern. Margaret. Shirley. Peter. Boxham. Michael. British Plant Galls. 2011. Field Study Council. Shrewsbury. 978-185153-284-1. 282–299. Second.
2. Harris. K M. The willow rosette gall, Radophaga rosaria: name correction. Cecidology. 2006. 21. 34–35.
3. Web site: Ellis. W N. Rabdophaga rosariella (Kieffer, 1897). Plant Parasites of Europe. 2 January 2018.