Tag Archives: help

Distinguishing tobacco and tomato hornworm caterpillars

After agonizing over the identification of hornworm larvae for years, I’ve developed two tricks that I’d like to share. Tobacco hornworm (Manduca sexta) caterpillars have stripes (seven of them), so remember that by thinking of Lucky Strikes cigarettes. Horn is usually red or red-tipped, like a cigarette. Also, tobacco gives you dark teeth and lungs … and tobacco hornworms have black shadows on their stripes. Tomato hornworms (Manduca quinquemaculata) have eight chevrons (Vs), which you can remember by thinking of V8 juice, which is primarily tomato juice. Here’s the graphic you can share with friends who might have it wrong:

Photographs of tobacco and tomato hornworm caterpillars

If you can, please spread the word … most of the tens of thousands of tobacco hornworm photographs on the internet are misidentified as tomato hornworms. Even Wikipedia page for tomato hornworm shows tobacco hornworm larvae (I’m working on it …). The problem is that tobacco hornworm eats tomatoes, and people with fancy cameras grow a lot of tomatoes.

For people living in Hawaii, please note that the above doesn’t include Manduca blackburni, which is closely related to tomato hornworm.

Photograph of tomato hornworm from Amanda Hill.

Posted in Biology, Education, Food, Gardening, Photography, Science | Tagged , , , , , , , , , , , , , , | Leave a comment

Conference poster examples

In case you found this site while searching for advice on poster presentations, here are two that I helped Daisy Bicking make for a The Laminitis Conference in Florida. Both were crafted to be light on text and to show off her great photographs.

Easy application of maggot debridement therapy to treat chronic absceses in laminitic horses

Alternative approach in rehabilitating the chronically laminitic foot utilizing composite materials

And if you’ve found this site because you have a lame horse, you can contact Daisy for details at daisyhavenfarm@gmail.com. She’s based in West Chester, Pennsylvania (near me), but makes road trips with her crew. She also gives seminars on how to do the above, and much more. You can also follow her farm on facebook. Tell her I sent you.

Please also see my Designing conference posters page for tips and downloadable templates in Powerpoint and OpenOffice.

Posted in Biology, Education, Graphic design, Photography, Science | Tagged , , , , , , , , | 1 Comment