Lasiopteridi on Tephrosia virginiana. The host midge causes leaflets of Tephrosia virginiana (Fabaceae) to fold in half longitudinally, and the white larva feeds within a slight swelling along the midrib (Figure 6 [see paper for image of the gall]). This gall has not been documented previously and no adults have been reared, but similar galls on other genera of Fabaceae are caused by various Dasineura spp. (Gagné 1989). Although both larvae from the 2016 collection of these galls produced adults of Platygaster tephrosiae, CSE preserved four larvae from the same gall type in July 2014. These were identified by R.J. Gagné as an undetermined Lasiopteridi.