Chinese Invasion: Should These Insect Immigrants Be Welcomed or Not?

Reader Contribution by Blythe Pelham
Published on September 10, 2019
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Introduced accidentally into the eastern part of the United States in the late 19th century, Tenodera sinensis—Chinese praying mantis—is as cherished as it is demonized. I admit to having emotions toward this amazing predator that span that spectrum. Most of the mantids in my garden are of the Chinese variety.

I have yet to kill one (that I know about) and even take care to relocate their egg cases when pruning my vast garden. I also gently relocate the variously sized adults when I run across them. I adore my pollinators so it’s difficult for me to imagine them being nabbed and eaten alive by one of these pesky predators. Thankfully, I have yet to find one of the many mantids I’ve run across munching on anything.

Some people purposely introduce the Chinese mantis into specified areas because they are such aggressive predators. Unfortunately, as with many infusions of non-native species, this can cause further imbalance and may lead to a long path of reestablishing harmony. I didn’t bring the mantids into my garden, I simply allow them to stay.

While I’d love to have more native mantids in my garden—like the Carolina mantis (Stagmomantis carolina) pictured below, bottom right corner—it would take a major killing spree of the Chinese variety on my part to make room for those natives. I’m simply not up to that particular task at this time. I haven’t yet taken the time to study closely enough to note if I have any European mantis (Mantis religiosa) or any of the other 2,000 varieties in my garden.

These predators definitely fascinate me with their prehistoric looks and their obvious and engaging gaze. I have watched them as much as they have watched me while I work in the garden. I usually leave them to their duties unless I’m destroying their habitat with my harvesting or weeding.

Most of them are quite willing to be relocated though I have had an occasional mantis try to take me on by grabbing my fingers with its spiky (lethal for smaller prey) praying arms. One even tried to take a bite out of my finger during the short ride to another location. Gotta pause to pay homage to the double entendre there—their praying arms are one of their best tools and are literally preying arms.

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