Author Archives: amt4

It was roughly 9:30pm, and I had just arrived to my apartment on a Tuesday night after cheer practice. I approached my apartment door, and as I was turning my key I happened to look up to the right of my door where the outdoor lamp was shining, exposing two large eyes that were staring right back at me. I paused for a second, and analyzed the slender stick-like body with the long green legs extending onto the surface. When I easily spotted the praying structures I knew right away that I had found me a Mantis.

 
I quickly opened the door and had my roommate fetch me a plastic tupperware so that I could catch him for lab. He stayed completely still until I edged him on to walk into my plastic trap. I made sure to get some decent photos before I stuck him inside the container.

Both photos taken by Alyssa Thomas (me)

Mantises are commonly called “Praying Mantis” because of their raptorial forelegs, which have a prayer structure. The common name is ironic in a way because these “praying structures” actually help these insects prey on smaller insects. Mantises are in the order Mantodea and there are over 2,400 species with most of them coming from the Mantidae family.

 
As mentioned before, mantises prefer to eat smaller insects such as mosquitoes, crickets, and moths. They patiently wait for their prey and then extend their forelegs, which have sharp spines to get a good grasp. Then the mantis will viciously bite into the neck, paralyzing the prey to make finishing off their meal a lot easier.

 
The interesting thing about these insects is that they are not picky eaters. Females will sometimes eat their own offspring after the eggs hatch. They even participate in sexual cannibalism, which consists of the female devouring the male’s head after he delivers his sperm. Click here to see a video of a hungry female mantis!

 
As you could see these mantises have an appetite, and they will do anything to fulfill it. One of the most recent found discoveries in the orchid mantis is the insect’s ability to mimic a flower to attract prey. This article describes the research done by scientists of Macquire University in Australia and of the University of Auckland in New Zealand.

 
The scientists gathered orchid mantises from the forests in Malaysia while also collecting general flowers for their experiment. They performed two experiments to research this bizarre ability that orchid mantises seem to have!

The first experiment was done to compare the color of orchid mantises to native flowers to see if these insects are capable of looking like these colorful Malaysian flowers in the first place. They used a spectrophotometer to measure the wavelengths of native Malaysian flowers. Pollinating insects (a.k.a mantises prey) are unable to distinguish the color of orchid mantises from various Malaysian flower species.

Photograph by Thomas Marent, Minden pictures/Corbis in Borneo, Malaysia.

This definitely helps trick insects so that these orchid mantises can eat!

The second experiment was even more interesting. They counted the number of insects attracted to native flowers and those attracted to the orchid mantis flower by observing them in the field. The researchers found that more insects were attracted the deceiving mantis flower instead of the actual native flower!

So these orchid mantises give a great example of one way these mantises patiently capture their lovely, insect meal!

It was an ordinary Tuesday afternoon, and I was doing my homework on the orange couches in the McMurtry commons. When dinnertime came around I decided to pack my things and then head over to cheer practice, but something else decided to make moves as well. On the bright orange cushions there was a curious insect, Euborellia annulipes (Lucas) also known as the ring-legged earwig crawling out of the crevices. While my best friend called me gross and whined “eew” a bunch of times, I was eagerly trying to get a clear photo of the earwig using my iphone.

Photo by Alyssa Thomas

So why was there an earwig inside the commons and how did it get there? Well this species has been identified in the United States since 1902. They are nocturnal and are commonly found outside beneath stones or in hidden areas; contrary to the belief that they crawl into human ears to lay their eggs. They prefer temperate or tropical environments, which means they tend to migrate indoors when it is too hot and dry outside. This may be the reason why I found one hidden in the air-conditioned common area. I figured that he was possibly waking up to eat some food like the rest of McMurtry students, which is why I did not see him come out until it was about 6:30p.m.

However, earwigs prefer to eat other insects dead or alive, which may be equivalent to the servery food on certain occasions. They are also known to feed on plants. These harmless pests do not quite bite, but they do have enlarged cerci used as forceps to protect them from other insects and mating.

Photo by Professor Miller

Their cerci is important in determining the sex. I was referring to the individual that I found as “he” because his cerci were more curved and spread out, which is indicative of the male. The female receives sperm from the male after interacting using their cerci. She holds the sperm until she is ready for them to be fertilized. The nymphs are born wingless and undergo simple metamorphosis.

Female earwigs are known to show maternal care, which is uncommon in insects. An article here explains how there was research done a few years ago about how mother earwigs favor their most-fit children. It is pretty selfish and not something done with most human relationships, but they are simply allocating their resources properly. It was found that the healthy babies emit a chemical signal that attracts the mother. Once she has signaled out her favorite kids, she simply regurgitates her food to nurse them.

So now you know why your older brother always got the new stuff while you had to settle for the hand-me-downs, your mom just wanted to invest all her time and resources to raise him perfectly since he was her first child. Anyways, don’t cover your ears from earwigs, but get to know them!