Ichneumonid Wasps

Ichneumonid wasps are black and have a lighter coloration on the legs with a slender long body. Females have a long ovipositor at the tip of their abdomen. They are parasitoids that can parasatize internally or externally and mainly attack caterpillar larvae and pupae.

Braconid Wasps

Braconid wasps look similar to Ichneumonid wasps with a long slender body and long ovipositor on females. They tend to be internal parasitoids but will pupate outside the host's body. They attack the larvae of caterpillars, beetles, flies and can be an important parasitoid to aphids.

Tachinid Fly

Tachinid flies look like houseflies but can vary in size and shape. They are hairy, black, grey or can be striped colored. They attack caterpillar larvae, beetles, grasshoppers, and true bugs.

References

Kain, D. P. and J. P. Nyrop. 1995. Predatory mites. Cornell Cooperative Extension. Insect identification. Sheet 123.

Krischik, V. and J. Davidson. 2013. IPM of Midwest landscapes.

Information by R. Suits 2013