Disceratus has short and slit-like tympanal
openings which are situated laterally on the base of the fore tibiae (about 1/3 of total tibial width removed from the edges of the flat dorsal surface), whereas in Gnathoclita the openings seem to be wider and coincide with the dorsal edges of the tibiae.
fore coxae with spine or without spine, femora usually lack spines from lower side, fore tribe and midtibiae with longitudinal upper groove; lacking marginal spines (single apical spine); fore tibiae with markedly widened base; thin distally opening of tympanal
organ exposed, oval, covered by membrane; Subgenital plate of male not bifurcating into two long lobes, not tubular, usually without apical styles.
Body large; pronotum with deep humeral notch on lateral lobes; tegmen wide ,fully developed ;wings longer than tegmen; fore coxae with long soine, femur with spinosa on lower side ;fore tibiae, mid\tibiae with longitudinal groove on upper side, tibiae widened basally; posterior opening of tympanal
organ, oval, membranous exposed; anterior opening concealed by swelling; in from of wide slit externally; terminal abdominal tergite with tubercles; subgenital plate of male with styles; ovipositor not shorter then pronotum, varying in shape, fully developed.
Zhantiev (1976): Functional organization of the tympanal
organ of the flour moth, Ephestia kueniella.
Researchers in Scotland played high-pitched tones for greater wax moths (one shown) and used a laser to measure nanometer-sized vibrations of the moths' tympanal
membranes, structures similar to human eardrums.
It can be physical in the sense of exemplifying advanced sonic concepts (such as texturing and auditory illusions); it can be so in the sense of exerting both atmospheric and tympanal
(as in eardrum) pressure.
The butterfly's tympanal
membrane works like [a human] eardrum, in that it vibrates in response to sound waves" says Kathleen Lucas, a biologist at Carleton University in Ottawa, Canada.
4] (but not in Albusambia), a reduced coecum in the aedeagus of the male genitalia, and enlarged tympanal
cases (Minet 1985, Yoshiyasu 1985, Yen 1996).
Etude sur les origines, l'evolution, la technique, et les themes du decor tympanal
(BEFAR 165), Paris.
Anatomically rather unconventional, the fly's auditory system is endowed with a directional sensitivity that is based on the mechanical coupling between its two hemi lateral tympanal
pseudosphex more elongate relative to its width and often [but not always] with a small spine on dorsolateral margin at the distal face of the tympanal
Body 45 mm long (without ovipositor), ovipositor 14 mm long as preserved; fore tibia with two inner spines and one outer spine preserved, internal auditory organ perserved, tympanum longer than broad, widely ovoid auditory openings of a swollen tympanal
chamber plainly visible just below the femoro-tibial joint