Although many species of tumbling flower beetles (Coleoptera: Mordellidae) are common and abundant, little is known of their life histories. Larvae of most species seem to be phytophagous, and acts of predation are considered rare and accidental. In this study, we dissected host plants of the endophytic mordellid Mordellistena aethiops Smith and subjected plant and insect samples to stable isotope analysis to determine trophic position. Dissections indicated that M. aethiops is a predator of the gall former Antistrophus rufus Gillette (Hymenoptera: Cynipidae) and possibly its parasitoids. Ratios of stable isotopes of nitrogen confirmed that prey constitute a significant proportion of the diet of the mordellid larvae but also revealed that some insects species and/or life stages, particularly hymenopteran parasitoids, may not enrich nitrogen isotopes as predicted by stable isotope theory, which currently is based primarily on predators.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.