| 释义 |
‖ thyridium Entom.|θaɪˈrɪdɪəm|
Pl. -ia.
[f. Gr. type *θυρίδιον, dim. of θῠρίς, θυριδ- window, opening.]
A whitish spot on the fore-wing of Trichoptera, marking a break in the cubital vein; also applied to similar spots occurring on the wing veins of some other insects.
1861H. Hagen Synopsis Neuropt. N. Amer. 259 Thyridium and first subapical areole with a whitish spot. |