A Monograph of Egyptian Diptera. 



Wied.). Maie hypopygium nearly ahvnys small and iiU'on.s])iL-uous, 

 usually glohular. Female ovipositor coriieous, composed of 3 joints 

 and pointed, the basai joint being important in shape and length, 

 it may either be flattened or eylindrical and either short, long or 

 very elongated. The pubeseence is usually similar to that of the 

 thorax and the abdomen often bears some latéral and apical bristles. 



LEGS 



Usually short and robust, but sometimes long and slender ; 

 front femora nearly always with a row of bristles below; middle 

 tibiae with 1 spur in almost ail the Egyptian and Palaearetic spe- 

 cies, but in some of the Oriental species they may hâve 2 spurs; 

 hind tibiae sometimes with a row of bristly hairs, ))ut they may be 

 pectinate or even pinnate in the exotic forms. 



W I N G 8 



Narrow or more or less broad, with a charaeteristie neuration 

 and usually marked with a distinct jiattern ; tins pattern may 

 be reticulate or may consist chiefly of bands, or l:)ands as well as 



1 : fosla; 3 : sub-cjsta; 3 : Radius 1; i : Radius 3 + 3; 5 : Radius 4 + 5; 

 Mfdia 1; 7 : Media 3 + Cuhitus 1; 8 : Cubitus 3+Analis 2; 9 : trace of Analis 3; 

 : Hninf'ral fi-nss-vein; 11 : Radin-median cross-vein; 12 : Médian cross-vein; 

 : >(odin :',: ii : Culntus l + <:iil.iius 2; C : cnstal cell; Ist C. : Ist costal oeil; 

 I C. : 3iid costal cell; s.ç. : riib-ristal 'Cell; cl). : costal toristle; St. : stigma; 

 I : Hiidius J cell; R.3 : J^adiiis 3 cell; R.â : Radius. 5 cell; R : Radial cell; 

 : Media cell; Cu. : Cubitus cell; Ist M2 : Ist Media 2 cell; 2nil M2 : 2nd Media 

 ;'cj|; Cul : Cubitus 1 cell; 2nd A, 3rd A : 2nd Analis and 3rd .\nalis cells; 

 1. : .\lula or axillarv lohe. 



spots; sometimes the wings are entirely hyaline. The subeostal vein 

 becomes indistinct towards the end where it coalesces and is merged 

 with the stigma. On the Costa, usually touching the inner margin 



