Tympanules: small openings covered by a membrane, having otoliths and serving as ears.
Tympanum: any membrane stretched like the head of a drum: specifically applied to the membrane covering the auditory organs in Orthoptera.
Type: a unique or single specimen selected from a series and labelled by the describer to represent his name and description: if male or female be added to the label, the specimen typifies that sex, and in case of an erroneous association the male type stands for the species unless the author has specifically designated the other example as representing the name: see also co-type; homotype; meta-type; paratype; topotype.
Typical: the normal or usual form of a species; agreeing with the type form.
Uliginous: muddy, or pertaining to mud.
Ulnar: in Homoptera, a wing vein between the radial vein and claval suture; = cubitus: in Orthoptera, = cubitus; q.v.
Ulnar area: in Orthoptera, = median area; q.v.
Ulona: the thick, fleshy mouth parts of Orthoptera.
Ulonata: a Fabrician. term for Orthoptera, based on the character of the mouth structures.