312 



ENTOMOLOGICAL SOCIETY 



Tegulae (pterogodes of Latreille ; paraptera of McLeay ; scapu 

 lae of other authors) , the triangular scales covering the base of 

 the primaries. 



NEW SPECIES OF PRODOXID^. 

 BY C. V. RILEY. 



Upon my return from California in 1887 I gave some account 

 before the Society of the insects associated with Yucca brevifolia, 

 the tree yucca of the Mojave Desert, and exhibited specimens of 

 the Pronuba, which I found to be associated with the flower of the 

 yucca as its pollenizer. I called attention to its peculiarities and 

 suggested that I would describe it by the specific name of para- 

 doxa. Pressure of other work has, up to the present time, pre 

 vented my doing so, but in connection with an article which I have 

 recently prepared for the Annual Report of the Missouri Botani 

 cal Garden I have characterized the different species of Prodoxi- 

 dae. As that publication is not purely entomological in character, 

 I have decided to present the descriptions of the new species to 

 this society for publication. 



Pronuba synthetica. LARVA (Fig. 15, a). Length when full-grown^ 

 14 mm. Somewhat more cylindrical than that of yttccasella, the general 

 color being bluish-green tinted with a rosaceous hue; otherwise undistin- 

 guishable from those of the other two species. 



Fig. 15. Pronuba synthetica: a, larva from side ; , 9 chrysalis, ven 

 tral view; c, do., lateral view nat. size in hairline; d, lateral, e dorsal 

 view of anal joints of <$ ; f, g, do. of 9 > >&> dorsal view of 2d and 3d joints 

 of abdomen all more enlarged. 



