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Meet the Pteromalidae Family

Fly parasites are a species of parasitoids from the Pteromalidae family and they are endemic to North America. They are a species-specific parasite, laying their eggs exclusively in fly pupa – the host. The Organic Cowboy blend of fly parasites includes Spalangia cameroni, Muscidifurax zaraptor, and Muscidifurax raptorellus. This mix of multiple strains provides you the ability to control houseflies, stable flies and horn flies.

Fly parasites live their entire life cycle on or near the surface of manure and other decaying organic matter. When they are released on or near fly breeding sites, the female searches through the habitat seeking out fly pupa. After locating one, she drums a hole in the pupal case, inserts her ovipositor, and deposits from one to a dozen eggs inside (depending on the species of fly parasite). She then moves on repeating this process until all her eggs have been deposited.

The life span of the female fly parasite ranges from as little as two weeks to as long as one month. She will live just long enough to deposit all of her 50 to 100 eggs. The eggs that were deposited inside the pest fly pupa will develop into mature adults within 14 to 28 days and a new generation of parasites emerges.

A new generation emerges

The life span of the female fly parasite ranges from as little as two weeks to as long as one month. She will live just long enough to deposit all of her 50 to 100 eggs. The eggs that were deposited inside the pest fly pupa will develop into mature adults within 14 to 28 days and a new generation of parasites emerges.

The fly parasite cycle

An Adult fly (A), lays eggs (B), which become larvae (C), the Pupae (D). At this stage the fly parasite lays eggs in the fly pupae (D), and after a three week incubation period (E), an adult fly parasite emerges to repeat the cycle.

Get a free order with a referral

If you are recommending the Organic Cowboy fly control program to your friends and neighbors, why not let us know, and you and your neighbor will recieve a double order when they create a seasonal fly control program with the Organic Cowboy. Just email us and let us know your friend’s name (no need for their email, we won’t be contacting or soliciting them) – we just want to be sure to credit you and them when they place an order.

Order your
Organic Cowboy
fly parasites now