none Enter Parasitoids are important biological control agents for environmentally friendly insect management programs. However, few parasitoids have been examined on the genomic level, with most sequences being used only as indicator genetic markers. We propose that as more Ribosomal Protein, RP, sequences become available in the public database, their use in studies of molecular phylogenetics and diagnostics will proportionately increase. Putative cytoplasmic RP gene sequences Were therefore selected as a subset from it cDNA library of 7,762 mRNA sequences, constructed from adults of the aphid parasitoid, Lysiphlebus testaceipcs (Cresson). Over 100 novel RP cDNAs from L. testaceipes were cloned, sequenced, and identified All sequences were deposited in the GenBank database under the consecutive accession numbers EH009595-EH017357, with the RP sequences under AY961484-AY961584 and DQ062217-DQ062237. Isoforms and allelic forms of some proteins are represented. Lysiphlebus testaceipes (Aphidiidae).