-4 Monograph of Egyptian Diptera. 101 



TEPHR1T18 DE8ERT0RUM nov. spee. 

 (PI. V fig. 3) 



DIAGNOSIS: — A small speeies easily distinguished by the 

 seutellum possessiug only one pair of b.sc. and by the wings which 

 hâve their basai third hyaline as well as the extrême apex and the 

 remaining surface blaekish with large hyaline indeutations at the 

 fore and hind borders. 



Maie. Length of body : 2.5 mm. ; wing : 2.3 nnn. 



FemaJe, unknown. 



DESCRIPTION.— Head entirely reddish-yellow; epistoma 

 prominent; proboscis short but geniculate, reddish-yellow with the 

 palpi yellow: .'^.or. 2. i.or. 3; genal bristle not strong but distinct: 

 ail the bristles are black except the upper .--.or., the rf., the prt. and 

 the oc/), pale yellowish. 



Thorax entirely covered with a dense cinereous tomentum which 

 extends over the whole of the pleurae, mesophragma and seutellum, 

 the latter possessiug only one pair of b.sc. ; mpl. 1, accompanied by 

 some yellow In-istly hairs; ail the bristles are yellow; the pubeseence 

 is uniformly yellowish ail over. 



Abdomen dark reddish-brown and possessing a very délicate 

 cinereous tomentum which is much less dense than on the thorax; 

 pubeseence pale yellowish; some of the latéral and ail the apical 

 l)ristles are black. 



Legs entirelv reddish-yellow with a uniformlv l)]ackish pubes- 

 eence. 



Wings blackish, with the basai third hyaline as well as the 

 extrême tip and the blackish area possessing one large hyaline in- 

 dentation at the fore border and three smaller hyaline indentations 

 at the hind border; the indentation at the fore or upper border 

 begins immediately after the stigma with its inner latéral margin 

 touching the apex of the stigma above and the radio-median cross- 

 vein l)elov,'; its outer margin runs immediately above the médian 

 cross-vein and its lower margin is limited at M3-i-Cul; the three 

 lower hyaline indentations are : one below the upper indentation 

 and the radio-median cross-vein in Cul cell, the upper margin of 

 which is before the middle of Ist M2 cell; one is at the base of 2nd 

 M2 cell with its upper margin touching Ml, and the third hyaline 

 indentation, which is by far the smallest. is also in 2nd M2 cell but 

 towards the middle of this cell. In other words the wings may be 

 described as hyaline with two large complète transverse dark bands 

 which are united by a thinner longitudinal band in the upper half 

 .:f Ist M2 cell and with one large and one small hyaline indentation 

 in 2nd M2 cell, leaving the basai third and the extrême apex hyaline. 



