104 H. G. EFFLATOUN. 



Maie and Female. I.ength of body : 5.2—6 mm.; ovipositor : 

 1 mm.; wing : 4.4—4.9 mm. 



DESCRIPTION:— Head entirely dull yellow and covered with 

 a very délicate white pulverulence ; proboscis dark brownish-yellow ; 

 ocellar triangle blackish ; antennae yellow with the third joint darker 

 and quite rounded at the tip ; genal bri.stle very strong and accom- 

 panied by some pale bristly hairs; s. or. 2, i.or. 3; ail the bristles are 

 blackish except the upper s. or. the oiiter rt. the />rt. and the ocp. 

 whitish. 



Thorax entirely covered with a dense characteristic brownish- 

 yellow tomentum, which, in certain, lights has a golden-brown re- 

 flection ; on the dise there are three very distinct darker longitudinal 

 lines; the tomentum however is often cinereous along the lower and 

 hind margins of the pleurae and on the mesophragma. Ail the 

 bristles are dark brown to blackish except the posterior npl. white; 

 the mpl. and j^t. are accompanied by some pale bristly hairs; the 

 pubescence is uniformly ]3ale yellowish ; scutellum with four bristles. 



Abdomen usually entirely ora.nge-yellow but often the second, 

 third, fourth and fifth segments are blackish except on the lower 

 margins reddish-yellow: it possesses a greyish tomentum which is 

 rather thin and inconspicuous: the pube.scence is uniformly yel- 

 lowish, so are the latéral and rather strong apical bristles; ovi- 

 positor shining black. as long as the three apical segments of the 

 abdomen together and with a similar pale pubescence. 



T.egs entirely yellow with a uniform blackish pubescence. 



Wings with ail the veins and the stigma yellow and charac- 

 terised by the very faint reticulation on the apical two thirds. 

 leaving the basai third almost entirely hyaline; in other words the 

 apicaftwo thirds of the wings are greyish with very numerous small, 

 rounded hyaline spots: médian cross-vein not straight and situated 

 at rather a greater distance than usual from the radio-median cross- 

 vein; Cu2 with a bend in the middle, a character which is rather 

 rare in the other Egyptian members of this geuus. 

 Squamulae and haltères yellow. 



This intercsting species is not common in Egyi)t. 1 bave cap- 

 tured it in Wadi Hcff during the months of May and June only 

 (1921, 1922) bv "sweeping" the inflorescence of Starhys oegyptiaca 

 and Laranâida coronopifolia but the food plant is unknown. 



ITp to the présent T. laiita was knowu onlv froni the Tsland of 

 TJhoda in the Aegean. 



