A Monograph of Egyptian Diptera. Zl 



Strobl., Mittheil, Naturwiss. Vct. Stsierniark, XX TX. 1892. 103. 

 [Mcllthreptus) (1893); Verr., Brit. FI., YUl. 445. (1901); Villcii., 

 J-Viiil. Jeun. Natural,. XXXIII, 147. (1903) ; Beck., Bez., Kert., 

 n. Stein, Katal. Palfearkt. Dipt., 11 1. 73. (1907); Kert., Calai. 

 Dipteror., VII. 135. (1910). 



==melissœ Zett., Dipt. Sc-and., II. 770. 5. (fcmale) (1843). 



= t(pniata Walk., {nec Meic), Ins. Britann., Uipt., I. 299.3. 

 Ç\Icllthrei)tus) (1851). 



i>/.l 6' A'0,b7,S'.— Thorax with its sidc niargins yellow only 

 above the .suture ; abdomen yniall and nioderately long. 



DESClilPTlUS:— Malc, (PI. III, lig. 7), Face yellow 

 to yellowisli-brown, with thc sides usually pearly-white and 

 entirely shining ; down tlie niiddk, the central knob is 

 ottcn blackish, sometimes with a dark raiddle Une extend- 

 ing downwards to the mouth-edge, while the exact margin of the 

 mouth is usually narrowly black on the front part; pubeseence on 

 face very short and inconspicuous; the lower margin of the mouth 

 runs baek horizontally to thc lower margin of the eyes and is not 

 in the least descending; the jowls are very small with white 

 pubeseence which extends up the occiput ; this pubeseence becomes 

 rather conspicuous and coarse where the margin of the eye is 

 arched inwards, and consequently leaves a much wider space on 

 the occiput visible; above this tîie occiput becomes much darker 

 and its pubeseence is longer and ranging from yellow to dark- 

 tawny ; vertex rather large, bright œneous-black and bearinga 

 dark pubeseence; frons of the same colour as the face, not much 

 produced, with short yellow pubeseence, but on the top occasion- 

 ally there are a few black hairs. Eyes reddish to reddish-brown 

 or black, toucliing for about eight facets. Antennœ duli orange, 

 blackisli on the dorsal side and at the apex; arista cpite bare, not 

 (piite as long as theantenna; it is gradually tapering and ob- 

 scurely orange at the base, but mostly blackish. 



Thorax either c^uite duU or very shining seneous, with a pair 

 of broad greyish longitudinal Unes on the dise near the base, thèse 

 stripes varying somewhat in distinetness ; it is yellow or greenish- 

 yellow on the humeri and on the side margins down to the base 

 "of the wings, after which the yellow is interrupted until the 

 postalar calli, which are more or less orange ; the prothorax and 

 nearly ail the mesopleurse. pteropleurae and metapleurse are yel- 

 low, and there is a large yellow spot at the top of the sterno- 

 pleurfç; the pubeseence is rather long, abnndant, pale yellow to 

 tawny, but very inconspicuous; the scutcllum is dull orange except 



