A vector of multiple arboviruses, the invasive Asian tiger mosquito Aedes albopictus was recently found to develop inside the pitchers of the purple pitcher plant Sarracenia purpurea in a forested environment. In this study larvae and pupae of Ae. albopictus were found in S. purpurea pitchers in a peridomestic habitat in central North Carolina. Evidence of direct oviposition on the inner sides of the pitchers was obtained by dissecting pitchers and examining the insides for eggs, which were then raised to adults. To determine if pitcher size and origin (same or different plant) affected the presence of immature Ae. albopictus, these variables were measured and compared against the presence/absence of larvae and/or pupae through a logistic regression analysis. Statistical evidence showed pitchers with larger openings were much more likely to contain larvae and/or pupae, and pitchers from the same plant were not significantly more often colonized than pitchers on other plants. These data, in combination with the presence of dead adult females in pitchers, suggest the morphology of some pitchers may prevent successful oviposition by gravid females.
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