Garden Talk

with Rebecca Jordi

What is the black and red insect on my milkweed plant?

Leave a comment

Milkweed_bug_University_of_KentuckyThanks for bringing in a sample of the insect as there are two very similar looking.  One is the Milkweed assassin bug and the other, the Giant Milkweed bug, Oncopeltus fasciatus.  Yours was the Giant Milkweed bug which feeds in milkweed plants, preferentially the fl
ower buds and seed pods, which are rich in nutrients. Oncopeltus fasicatus lives out its life on milkweed plants. Mating, egg-laying, development of larvae, and courtship all take place on milkweed plants. The primary food is milkweed seed, while the insects also feed on milkweed plant juices. The milkweed diet makes the bugs unpalatable and they tell predators to stay away with their combination of red and black coloring.  The species ranges from Ontario to South America, including the West Indies.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s