Complex sentence: The senita moth is an obligate mutualist with the senita cactus; pollination of the senita cactus is dependent on the senita moth, and, in turn, the senita moth is reliant on the senita cactus for oviposition and larval food sources.
Split into simpler sentences: The senita moth is an obligate mutualist with the senita cactus. Pollination of the senita cactus is dependent on the senita moth, and, in turn, the senita moth is reliant on the senita cactus for oviposition and larval food sources.