🚨 ARTHROPOD OF THE DAY 🚨

Tachinids are the most important of the parasitic flies that provide biological control. Adults range from 1/12 to 4/5 inch (2–20 mm) long, and most are 1/8 to 1/2 inch (3–12 mm) long, varying by species.

Tachinid flies fall squarely into the category of beneficial insects when it comes to the role they play in our gardens. But it isn’t the adult fly that’s the harbinger of death. Instead, it’s the larval fly.

Larvae are pale maggots that occur inside hosts. Because mature larvae of many species exit their host to pupate, the oblong blackish to dark reddish puparium (covering of the pupae) of tachinids can sometimes be observed, such as near a host pupa that was killed and has a distinct emergence hole of the parasitoid.