I downloaded the paper. It does not credit the highschool student's discovery. The authors take credit for the discovery themselves:
"Recently, we reported that waxworms (the larvae of the
Indian mealmoth or Plodia interpunctella) were capable of
chewing and eating PE films, and two bacterial strains capable
of degrading PE were isolated from the gut of the worms, i.e.,
Enterobacter asburiae YT1 and Bacillus sp. YP1. During the
same research period, we found that mealworms, the larvae of
the mealworm beetle or Tenebrio molitor Linnaeus (a species of
darkling beetle), which are much larger in size than waxworms
(typically approximately 25 versus 12 mm in length), can eat
Styrofoam as their sole diet."
They seem to have duplicated the 2009 highschool student's work. Here is the highschool student's abstract:
"The observation that mealworms might be able to feed on styrofoam sparked a curiosity to answer whether mealworms could digest styrofoam, and if so, how could they remain alive. First of all, these mealworms were fed in different kinds of food to insure the mealworms can digest styrofoam. The results showed that mealworms can indeed feed on styrofoam only. The hypothesis of this study is that microbes inside the digestive tracts of mealworms are responsible for the decomposition of styrofoam. To further test this hypothesis, microbes from the digestive tracts of mealworms were cultured at 37 C in LB medium under anaerobic conditions. There were many kinds of microbes isolated. From those microbes, a kind of bacteria forming red colonies was confirmed responsible for decomposing styrofoam. The growth conditions and strain characteristics of the bacteria forming red colonies were further examined. These results imply that the red bacteria isolated from the digestive tracts of mealworms may shed light on solving the serious environmental pollution caused by styrofoam."
https://apps2.societyforscience.org/abstracts/project.cfm?PI...