Future and Past Talks

...now updated. Links to follow. Some future talks quite soon are now visible.

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It's Hard to be a Hornworm

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In Ohio, there's a delightfully gregarious caterpillar known as Manduca sexta , or the tobacco hornworm. It's placed within the Sphingidae family, which is composed of the hawk moths. Take a look at the Wikipedia page for the hawk moths: they're all spectacular. Some of the adult moths resemble birds or bees, they're just amazing. To get back on topic, the tobacco hornworm feeds on tobacco (obviously), as well as other plants within the family Solanaceae , which includes tomatoes. This makes them pests to gardeners, which is pretty unfair. Tobacco hornworms develop into some beautiful moths and are quite large, so they're truly a sight to see once they reach maturity. Luckily for me, they also feed on Datura wrightii , a plant within the same family as tobacco and tomato, which grows near my house. I had the fortune of finding a few of the caterpillars on the Datura plant, so I plucked them along with some leaves and placed them in a container in my room. They were
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A Portfolio of Historical Insects

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I had some extra time after work today, which I used to visit Marietta College's Special Collections . They keep scores of old documents, many dating back to when the Ohio Company of Associates first established Marietta in 1788 as the first settlement in the Northwest Territory. What I was after today, however, had an Entomological bent to it. A young Hildreth, via Wikipedia . Samuel Prescott Hildreth, a doctor who lived in Marietta during the early to mid-1800s did some of the first work in Ohio studying insects. He was a naturalist and published the first observations of the periodical cicada's 17 year life cycle, which is what I was after. I didn't find any of his cicada papers, but the librarian did bring me a book he wrote and illustrated, entitled " Portfolio of Insects ." This book includes paintings by Hildreth of various insects from Marietta and elsewhere in Ohio. When I first opened the book, I was greeted with beautiful illustrations of the tobacco ho
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The Amber Flame Tree

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It has now been a year since my journey to Costa Rica as part of a semester study abroad experience focusing on Biology and Spanish. I returned last May, and one of the things I was most looking forward to was fall: I needed to see some explosive leaf colors. Don't get me wrong, the plants I saw in Costa Rica were beautiful and vibrant green, but it's difficult to compare that with the leaf colors you can see during an Ohio autumn. As fall came and went, I saw some wonderful colors, and gradually came to the realization that one of my favorite trees is the American sweet gum, Liquidambar styraciflua . Even its scientific name is beautiful and rolls right off your tongue, it's fantastic. The leaves of the tree are palmate to be technical, but I would rather describe them as five-pointed stars. The colors of these leaves are astounding and range from green to purple, with yellows, reds, and oranges in between.The maples have nothing on this tree! Leaves of a young tree. Notic
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