Received: 24 June 2016 | Accepted: 19 September 2016 DOI: 10.1002/ece3.2541 ORIGINAL RESEARCH Host-plant associated genetic divergence of two Diatraea spp. (Lepidoptera: Crambidae) stemborers on novel crop plants Andrea L. Joyce1 | Miguel Sermeno Chicas2 | Leopoldo Serrano Cervantes2 | Miguel Paniagua2 | Sonja J. Scheffer3 | M. Alma Solis4 1University of California Merced, Merced, CA, USA Abstract 2Agronomy, University of El Salvador, San Diatraea lineolata and Diatraea saccharalis (Lepidoptera: Crambidae) are moths with Salvador, El Salvador stemboring larvae that feed and develop on economically important grasses. This study 3Systematic Entomology Lab, USDA-ARS, investigated whether these moths have diverged from a native host plant, corn, onto Beltsville, MD, USA 4Systematic Entomology, National Museum introduced crop plants including sorghum, sugarcane, and rice. Diatraea larvae were of Natural History, USDA, Washington, DC, collected from these four host plants throughout the year in El Salvador and were USA reared on artificial diet until moths or parasitoids emerged. Adult moths were subse- Correspondence quently identified to species. Amplified fragment length polymorphisms (AFLPs) and Andrea L. Joyce, SNRI, University of California Merced, Merced, CA, USA. mitochondrial DNA cytochrome oxidase I (COI) were used to examine whether or not Email:
[email protected] there was genetic divergence of D. lineolata or D. saccharalis populations on the four Funding information host plants. Percent parasitism was also determined for each moth on its host plants. University of El Salvador (UES) Agronomy D. lineolata was collected from corn in the rainy season and sorghum in the dry season. faculty and the Fulbright Fellowship. D. saccharalis was most abundant on sugarcane in the rainy season and sorghum in the dry season.