.4 Monograph of Egyptian Diptera. 41 



3. XAINTHOGRAMMA SCHIJ\. 



Schin., Wien. Entom. Monatsehr., IV. 215. (1860). 



SYNOA YMY:—Sinosyrphus Big., Annal. Soc. Entom. Fr. ; (6). 

 II. Bull. LXVIII. 4. (1882). 



Moderately large Syrphus-like species which possess conspic- 

 uous yellow or orange markings on the sides of the thorax and 

 the colours on the whole are strongly contrasted on all parts of 

 hody. It is very similar to Syrphus hut is distinguished by 

 the well defined orange markings which extend to distinct side 

 lines on the thorax, and to yellow or orange spots on the pleura?. 

 Face shining, waxy yellow, practically devoid of pubescence, and 

 in the male, decreasing /in width, as it descends. Eyes quite 

 bare. Antennae with the second joint very short, and the third 

 joint bearing a rather short, bare arista. 



Abdomen rather narrow, with the side margins almost 

 parallel (although in the European species it may be broad and niar- 

 ginate); the yellow markings are very conspicuously contrasted 

 against the black ground colour; pubescence short. 



Legs simple, slender and almost bare. 



Wings with a venation similar to that of Syrphus. 



Not much is known about the metamorphoses of this genus ; 

 Verrall states that the larva has been bred from heaps of turf, 

 hut I think that it is very likely that our only Egyptian species 

 is aphidiphagous like the members of its closely allied genera, 

 Syrphus and Sphcerophoria. 



1. X. AEGYPTIUM WIED. (PI. IV. fig 7). 



Wied., Aussereurop. Zweifl., II. 133.29. (Syrphus). (1830); 

 Lw„ (Efv. Kongl. Vet. Akad. Forhandl., XIV 1857.37s. 1!) 

 (Syrphus) (1858)," Dipterenf. Sundafr., I. 306.4. (Syrphus) (I860) 

 et in Peters: Reise n. Mosambique, Zool., V. 17. (Sip/thus) (1862); 

 Walk., The Entom., V 274.49. (Syrphus) (1871); Verr., Trans. 

 Entom. Soc. Lond., 1898.414.4. (Syrphus) (1898); Ricardo, The 

 Nat. Hist, of Sokotra, 369.21. (Syrphus) (1903); Beck., Bez., Kert. 

 u. Stein, Katal. Palsearkt. Dipt., III. 73. (Sphcerophoria), 



