Myndus crudus (Homoptera: Cixiidae) in Cancun, Mexico.

centration of fat red 7B was increased to 200 or 500 mg per 125 mg of diet, the adults were colored red for 2 days after eclosion, similarly, as they were colored red in diet with 125 mg of fat red 713. Eggs did not hatch on diets mixed with janus green B, quinaldine red, crystal violet, fast red PDC salt, and 2,3,5-triphenyltetrazolium chloride (the latter 2 diets dried out completely). Perhaps some dyes are ovicidal. Larval development was delayed 2 to 3 days if larvae fed on diets with methylene blue and the 4 Tinex? dyes. The average number of recovered pupae ranged from 26 from diet with Tinex black to 2475 from typan blue; an average number of 1935 pupae was recovered from diet with fat red 7B (125 mg) and 1980 from the control diet. This note discerns 55 chemicals that were unsuitable internal dye markers for adult A. suspensa. (Mention of a commercial or proprietary product does not constitute an endorsement by the USDA.)