thyridium
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English
[edit]Etymology
[edit]From Latin thyridium, from Ancient Greek θυρίδιον (thurídion), diminutive of θύρᾱ (thúrā, “door”).
Noun
[edit]thyridium (plural thyridia)
- (entomology) A spot in the wing veins of Neuroptera, Hymenoptera and Trichoptera.
- (entomology) A spot on both sides of the second abdominal tergite in ichneumonids