On the Eighth Day of HMNS…Meet the Entomologists

There is never a shortage of cool jobs at HMNS – fossil hunter, bug chef, snow wrangler just to name a few – but Erin and Laurie, entomologists and chief caretakers for all our live insects – are probably in pretty stiff competition for the all-time coolest job award.

On top of raising exotic insects like giant katydids and Madagascar hissing cockroaches and caring for butterflies from chrysalid to conservatory, they also get to experience the awesome combination of kids + creepy crawlies with their Bugs on Wheels program. In the video below, they’ll take you behind the scenes of the Cockrell Butterfly Center and through their typical day – from feeding the insects to getting the butterflies ready to flutter - plus show you some amazing insects up close.

You can see their creepy crawlies – and the beautiful butterflies – at a visit during a visit to the Cockrell Butterfly Center. The walk-through tropical rainforest habitat makes a nice burst of springtime in the winter and it’s perfect for families with kids of any age. 

The Cockrell Butterfly Center is just one of the fun and fascinating options for families at the Houston Museum of Natural Science during the holiday season. In a take-off of everyone’s favorite holiday classic, The 12 Days of Christmas, we’ve got 12 ideas for fabulous family fun this holiday and we’ll be sharing the possibilities here every day until Christmas Eve. Best of all, most are activities that last past the holiday season – some, year round. You can also check them all out now at the spiffy new 12 Days of HMNS web site.

Check out the first seven days of HMNS:
On the first day of HMNS, explore The Birth of Christianity.
On the second day of HMNS, shop for Sci-tastic gifts.
On the third day of HMNS, meet Prancer the reindeer.
On the fourth day of HMNS, discover the making of The Star of Bethlehem.
On the fifth day, move it, move it with Madagascar 2 in the Wortham IMAX Theatre.
On the sixth day, hunt dinosaurs with Dr. Bob Bakker.
On the seventh day, look inside the human body in BODY WORLDS 2.

A Tale of Two Beetles

Blog 211
Creative Commons License photo credit: emills1 Taxicab Beetles

During my time here at the Cockrell Butterfly Center, I’ve bred and raised several different types of insects, walking sticks, katydids, grasshoppers, mantids, and even some spiders. These insects are relatively easy to breed and have a quick lifespan. I’ve always wanted to delve into the world of breeding beetles, but for some reason, I’ve been hesitant to take on such a task. Maybe because of the commitment; some species of beetles can take years to reach adulthood!

Well, I’ve taken the dive! On Tuesday, September 7, I received a shipment from a wonderful colleague of mine at the Sophia Sachs Butterfly House in St. Louis, Mark Deering. Mark has been raising beetles for years and seemed like the perfect mentor for me. He sent me two small colonies of beetles, one of Eudicella euthalia and one of Pachnoda marginata. These are two types of flower beetles from Africa. Flower beetles are a group of scarab beetles that visit flowers to collect pollen and nectar. Among the 4000 species of flower beetles are some of the most beautiful beetles in the world! Luckily, these two species are excellent for beginners, taking only 7-10 months to complete their life-cycle.

Blog 216

Creative Commons License photo credit: emills1 A newly emerged
female Eudicella.

The genus Eudicella is comprised of more than 20 species of brightly colored beetles. These beetles are only found in tropical Africa. They are often referred to as “buffalo beetles” due to the “y” shaped horn found on the male’s head. The females’ head is shaped sort of like a shovel and used to dig into the substrate and lay her eggs. Beetles in the genus Pachnoda are also indigenous to Africa, and members of their 108 species groups can be found all over the continent. Pachnoda marginata is the most commonly bred species. They are also known as sun beetles or taxicab beetles because of their unique color pattern. The male lacks any sort of distinguishing characteristic such as a horn, so I really can’t tell male and female apart!

Blog 221
Creative Commons License photo credit: emills1 A grub

Setting these beetles up for rearing was pretty easy and now all I need to do is wait. The larvae of both species thrive in a substrate made from hardwood mulch and humus or decomposed organic material. They will feed on this mixture for several months until the time comes for them to change. If you didn’t know, beetles have complete metamorphosis just like butterflies. The larvae of scarab beetles are commonly called grubs and are fat, white, and shaped like a “c”. Most of you are probably familiar with grubs since they are often found in your lawn or garden. Once the grubs are ready to pupate, they will construct a cell from compacted dirt and saliva. This cell acts as a cocoon inside which the grub turns into a pupa.

Blog 219
Creative Commons License photo credit: emills1 A cocoon

A few months later the adult beetle emerges. It really is an amazing transformation and even as an entomologist, it’s hard for me to wrap my brain around that! Being able to rear these beetles here is a great advantage for us. Sometimes exotic beetles are hard to come by or they don’t make the long trip from our only supplier in Malaysia. I’m so excited to have these beautiful beetles here for display and education! Be sure to stop by the Entomology Hall here at the Cockrell Butterfly Center to see these and other spectacular beetles on display! Happy Bug Watching!