The Ovipositor System of Isostasius (Platygastroidae: Platygastreidae)

The ovipositor of Isostasius species is unique to the Platygastridae family and is characterized by a system of coiled valvulae. This morphological structure acts as a hypodermic needle comprising hollow tubes that facilitate egg-laying. The coiling mechanism assists in oviposition in parasitoid wasps, encouraging egg deposition in isolated larvae with a high degree of precision.