Quantitative estimation of the stage of embryonic development in the locust, Schistocerca gregaria.
D000818:Animals; D005314:Embryonic and Fetal Development; D005121:Extremities / Q000196:embryology; D005123:Eye / Q000196:embryology; D006257:Head / Q000196:embryology; D007313:Insecta / Q000254:growth & development*; D013997:Time Factors