(tribe Troidini) apparently belong to the other group, in which no qualitative change of osmeterial secretion occurs at the last larval ecdysis. This group can be designated as 'homogeneous type', which is further subdivisible into three types.
**Monoterpene - Luehdorfia (Zerynthiini, Parnassiinae)
**Sesquiterpene - Atrophaneura (Troidini, Papilionnae)
**Aliphatic acid and ester - Graphium (Graphiini, Papilioninae)

Function

Eversion of the osmeterial gland is demonstrably effective

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