Larva vigorously exits when gall is opened. “This species modifies goldenrod (Solidago) florets to create short-pointed, green to red, smooth, onion-shaped galls. The orange larvae leave the galls to pupate in the ground.” (Gagne, 1989). Readville, MA 9/2/12
Olearia paniculata infected by an Olearia Gall Midge (Oligotrophus oleariae) (a member of the fly family Cecidomyiidae).
The adult midges lay clusters of eggs at the tips of young shoots in spring and larvae feed on the plant tissue causing it to grow abnormally and enlarge around each larva. They coalesce to form multi-chambered galls covered with rosettes of aborted leaves.
This is a tiny gall on a leaf of native Black Sage (Salvia mellifera) in the Lamiaceae plant family. I don’t expect to find galls on this shrub, but here it is. It might be the gall of a Tube Gall Midge (Rhopalomyia salviae) fly in the family Cecidomyiidae of the order Diptera, but cp. the Sage Leaf Gall Midge (Rhopalomyia audibertiae) in this photo. This gall has straighter sides than the other one and it looks different. It’s said to be more common on the stems. (San Marcos Pass, 2 February 2014)
Assorted insects, spiders, scorpions, ticks, and other invertebrates from around Perth, Western Australia, that I am asked to identify, or stumble across myself, while I'm busy being a termite technician.