A Moiiograph of Egypt'iaii Diptcra. 5£ 



ins 



A rather large and vcry handsome speeies much rcsenibl ^^ 

 L. 2:>?/msf /■(■ but casiïy separated by the al)Ove eharacters. 



DESCRIPTION :~Miile, (PL IV, lig. 4 & PL I, fig. 11).— Face 

 bright shilling yellow with a black middle line wliich does not 

 nearly extend "to the antennse, but which is partially con- 

 tinued below round the mouth-edge, narrow in the hollow 

 below the antennae and much increasing in width to the upper 

 niouth-edge. Frons very large and inflated; it is a. little darker 

 than the face and clothed with dark grey, rather abundant pubes- 

 eence. Pubesoence on face also fairly abundant, but very short and 

 almost white below, and dark grey and a little longer aliow by the 

 sides of the antennse. Vertex very small, black, with JiUukish 

 mibescence on the dise, l)ut pale behind. Occiput entirely covered 

 with white silvory dust and dense, rather long, almost pure wliite 

 and fairly conspicuous pubescence. Eyes covered with short pubes- 

 cence which is light brown in front, and pale, almost white on 

 the middle; the top of the eyes and the hind margins are free 

 from pubescence ; the facets'on ail the upper part of the eyes, 

 except just on the front and back are muchlarger than the others. 

 Antennœ more or less reddish-brown to brownish-black, with the 

 two basai joints usually lighter in colour, as well as the ventral side 

 of the rather long third joint; arista yellowish-brown and bare; 

 it is inserted before the middle of the third jofnt and thickened 

 for more than its basai half. 



Thorax very shining l;lackish-l)hie, but yellow on the sides. 

 Pubescence not dense, very pale greyish-white to white, oxccpt on 

 the sides where it is rather dense, tufted, and yellowi.^li, ( sprcial- 

 ly in front. Scutelluni brownish-yellow when viewcd sidcways, !»ut 

 always obscured by transparency whin vicwed from above, aiid 

 its pubescence is not dense but fairly long and almost uiiiformly 

 whitish. Abdomen dcep, dull, somewliat velvety black, but sliining 

 on the lower margins of the three basai segment, and with three 

 pairs of thick, pale yellow, yellow, or orange-yellow lunules. The 

 fiist pair of lunules which are on the second segment are almost 

 5traight, but narrower at their inner ends. The second and third 

 pairs of lunuies on the third and fourth segments respectively, are 

 sioped on their upper margin, from about the middle of the side 

 of the segment upwards towards the front margin; they are dis- 

 tinctly narrowed about their middle and dilated at the inner ends 

 v^^hich usually touches rhe front margin; none of thèse lunules 

 actually touch the side-margins. The fourth and fifth segments 

 hâve yellow, narrow hind margins. Pubescence short, mainly pale, 

 whitish and occasionally there are a few darker hairs interspersed 



