| 1. | In higher gall flies, the parameres and tegmen are not developed.
|
| 2. | The rounded tegmen which resembles the elytra of beetles are often patterned.
|
| 3. | The tegmen tympani, the roof of the tympanic cavity, is reduced.
|
| 4. | There are five long, often branched, rays attached round the edge of the tegmen.
|
| 5. | Seeds reniform, suspended; testa thick, crustaceous, shining black; tegmen soft, membranaceous.
|
| 6. | This ascends towards the anus, which projects from a small conical protuberance at the edge of the tegmen.
|
| 7. | The anus, unusually for echinoderms, is found on the same surface as the mouth, at the edge of the tegmen.
|
| 8. | The squamosal lacks a suspensory process that contacts the tegmen tympani, the roof of the tympanic cavity, a defining character of oryzomyines.
|
| 9. | The squamosal bone lacks a suspensory process that contacts the tegmen tympani, the roof of the tympanic cavity, a defining character of oryzomyines.
|
| 10. | To expose the IAC ( Inner Auditory Canal ) properly, portions of bone from the metal fundus and also the tegmen tympani must be removed.
|
