Milkweed Bug Update

We have been experiencing delays shipping the adult milkweed bugs (Part number 270-4380) required for Investigation 1: Milkweed Bugs of the FOSS Populations and Ecosystems course due to lack of availability and the insect's short life span.

Please note that your Teacher Guide indicates you will receive 24 adult milkweed bugs-12 female and 12 male. To alleviate life span issues, we will now be shipping 30 milkweed bugs that are in their last instar stage. The bugs will then take approximately 5 to 7 days to reach maturity. Once the milkweed bugs are mature, you will be able to separate them by gender per the instructions in your Teacher Guide.

Because milkweed bugs cannot be differentiated as male or female until they are adults, it is possible that you will have an uneven number of male and female pairs. However, the first part of the activity requires only 8 of each gender; after that, the bugs will be mixed in the various habitats and will reproduce.

If possible, please plan to order your milkweed bugs to arrive one week earlier than you would normally need them. This will allow the bugs time to reach maturity so you can start Investigation 1 immediately. If you are unable to plan ahead, we recommend that you start with Investigation 2: Sorting Out Life while waiting for the bugs to mature.

We appreciate your business and apologize for this inconvenience. If you have any questions, you can call our Customer Service Department at 1-800-258-1302, Monday through Friday, 8 a.m. to 6 p.m. EST.

Thank you.