EXPLANATION OF FIGURE 10. 



Life stages of Syrphus oronoensis n. sp. 



A. Dorsal view of larva to show color pattern; X 7. 



B. Dorsal view of the puparium, X 8, showing shape and color pattern. 



C. Adult male, X 9 (legs and right wing omitted). The abdomen is 



here shown as it appears during life (cf. fig. 10, H). 



D. Posterior respiratory organ of the larva, dorsal view, X 40. 



E. Posterior respiratory organ from the side, X 40. Note the charac- 



teristic' constriction two-thirds the way from the base. 



F End view of the posterior respiratory organ X 170, showing median 

 dorsal spiracular ridge, the irregular shape of the button or circu- 

 lar plate, the slit-like spiracles, and the minute inter-spiracular 

 spines. 



G. Puparium from the side, X 8. 



H. Abdomen of the type male, X 6, as it appears after drying and shrink- 

 ing. 



