118 n. C. EFFLATOUN. 



M(tle and Femalc. T.eiigth of body ; 4—5.9 mm.; ovipositor : 

 2.9 mm.; wing : 4.4—5 mm. 



DESCRIPTION: — Ilead yellow and entirely covered with a 

 very fine white tomentum which is rather more dense along the eye 

 margins and towards the middle of the face ; occiput blackish towards 

 the centre, abovc the ocelhir triangle also blackish; ail the bristles 

 are blackish-brown excopt the upper s. or. the outer r^., the ocp. 

 white and the small but distinct genal bristle black. 



Thorax and scutellum entirely covered with a dense cinereous 

 or yellowish-grey pulverulence which extends over the whole of the 

 pleurae and mesophragma; the latéral margins of the dise and up- 

 per margins of the pleurae however are often covered with a yellow 

 or golden-yellow tomentum; usually traces of the three narrow and 

 darker longitudinal lines t;re seen on the upper half of the dise; ail 

 the bristles are brownish-black except the j^.vpl. and the pt. yellow; 

 them/)/. and/:»^. areaccompanied by some pale bristly hairs ; scutel- 

 lum with 4 bristles irat the a. se. are much weaker than the b..^c. 

 and converging at the apex; the pubescence on the thorax and 

 scutellum is very pale yellow, scattered and somewhat longer at the 

 hind margin. 



Abdomen entirely black but ap])earing dark grey owing to a 

 grey pulverulence which is much less dense than on the thorax, hence 

 the abdomen is darker in colour; ovipositor as long as or even slightly 

 longer than the abdomen, very shining black; the bristles are from 

 dark grey to blackish ; the pubescence is from pale yellow to yellow 

 on the alDdomen and ovipositor. except on the apical third of the 

 latter blackish, much finer and inconspicuous. 



Legs entirely reddish -yellow, Avith a short uniform blackish 

 pubescence; front femora with a row of bristles beneath; middle 

 tibiae with a single spur. 



Wings characterised by being hyaline with some pale brown 

 markings or spots which are often very indistinct; thèse brown 

 markings are situated between the stigma and the apex of R2-I-3 

 and leaving always the tip and the lower margin broadly hyaline; 

 the stigma is yellow with the extrême tip usually brownish-black: 

 the veins are blackish except on the basai third yellow: inferior 

 angle of Cu cell drawn out into a very .short but pointed angle, 

 shorter than the M. cell; costal bristle double. 



Squamulae whitish; haltères yellow. 



T. du ta is common almost evervwhere, in T.ower as well as in 

 Upper Egvpt. I hâve capturea it in Mariout, Port-Said. Cairo, 

 Alexandria, Suez Road, Helwan. Wadi Hoff, Wadi Rashid, Wadi 

 fTnrnwi. Wadi Tih, Wadi Rishrash, Sakkara, Mazghouna, Kom- 



