I wanted to find out if the stripe pattern on monarch larvae indicated gender. Students in my class raised monarch larvae to 5th instar. We examined the stripe patterns on monarch larvae and made drawing of what we observed, paying special attention to the fused 9-11 segment, which corresponds to the location on the adult's abdomen where the distinguishing gender characteristics are located. Once the larvae developed into an adult, each student recorded the gender of their larvae drawings. Our research used drawings of two male and five female larvae. We found one characteristic that seemed to distinguish a male lava from a female larva. On the fused 9-11 segment, male larvae had a white or a yellow stripe interrupted with two black dots, where the female larvae had a yellow stripe broken with only one black dot. Our results are inconclusive due to a very small sample size.