These data were collected by Aileen Berasategui. Beetles were reared on black-eyed peas. Beetles were from the LB strain and adapted to their host bean for many generations. Adult beetles were females and males. Beetles were eggs, larvae, or adults. Beetles were surface-sterilized. Beetles were extracted with a phenol-chloroform extraction. Sequences are for the v4 region. MiSeq sequencing was done by MrDNA labs. For more information, see https://doi.org/10.1128/AEM.00212-21.