Ichneumon Wasp vs Aphytis Wasp

Side-by-side species comparison

Attribute Ichneumon Wasp Aphytis Wasp
Scientific Name Megarhyssa macrurus Aphytis melinus
Order Hymenoptera Hymenoptera
Family Ichneumonidae Aphelinidae
Size 25-50 mm body plus 100+ mm ovipositor 0.8-1.2 mm
Habitat Woodlands Orchards
Diet Parasitoids Parasitoids
Regions North America Worldwide citrus-growing regions
Conservation Least Concern Not Evaluated

Ichneumon Wasp

A large parasitoid wasp with an extremely long, thread-like ovipositor that can exceed the length of its body. Females drill through solid wood to reach their host larvae deep inside.

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Did You Know?

The female can somehow detect horntail larvae vibrations through several centimeters of solid wood and then drill her flexible ovipositor to reach them with remarkable accuracy.

Aphytis Wasp

A tiny golden-yellow parasitoid wasp that is the primary biocontrol agent of California red scale on citrus. It lays eggs beneath the scale cover where its larva feeds externally on the host.

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Did You Know?

California produces over one billion of these wasps per year for release in citrus orchards.