Development of Nomophila nearctica was studied under six constant tempera- tures in controlled temperature cabinets. Developmental threshold temperatures for egg, larval, and prepupal-pupal stages were 8.9, 1l.5, and 9.2°C. The overall mean developmental threshold temperature for all stages was 9.9°C. Degree-day summa- tions, based on the above threshold temperatures, averaged 50, 304, and 181 DD for the egg, larval, and prepupal-pupal stages, respectively. Total heat units of 535 DD are required for development from oviposition to adult emergence. Head capsule measurements indicated six larval instars.
Miller, Fredric D. Jr. and Maddox, Joseph V.
"Effect of Temperature on Development Rate and Survival of Nomophila Nearctica (Lepidoptera: Pyralidae),"
The Great Lakes Entomologist: Vol. 24
, Article 10.
Available at: http://scholar.valpo.edu/tgle/vol24/iss4/10