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A Monograph of Egyptian Diptera. 105 



10. EUMERUS MEIG. 



Meig., System. Beschreib., III. 202. CII. (1822). 



SYNON YMY: — Pumilio Schembri in litt. apud. Rond., Annal. 

 Soc. Entom. Fi\, (2). VIII. 127. (1850). 



Rather small to medium sized species, which bear very moderate 

 to thick and rather coarse pubescence, and which possess on the 

 abdomen rather peculiar pale lunules, which sometimes are obscur- 

 ed by a reddish, or chestnut-red ground colour. 



Head broader than the thorax, with the face flat and devoid 

 of any central knob, but bearing very dense white or yellowish dust, 

 as well as a universal, rather long, pubescence. The lower part of 

 the occiput is shallow, but suddenly inflated above. The vertex is 

 very elongate and the distance between the two posterior ocelli is 

 much smaller than the distance between these and the anterior 

 ocellus. Eyes more or less hairy and touching for only a rather 

 small distance in the male but always widely separated in the 

 female, and with the facets on the front half enlarged. Antennas 

 rather short and with the third joint usually distinctly larger in 

 the female. Arista inserted well before the middle of the third 

 joint, three- jointed and quite bare. 



Thorax rather quadrate, distinctly marginate, thinly or coarsly 

 punctate, slightly arched and entirely aeneous-black, but sometimes 

 with two lighter, more or less distinct, light bands ; it may possess 

 dense and coarse light hairs, or it may be almost bare, with very 

 short pubescence. 



Abdomen generally aeneous-black like the thorax, much longer 

 than the latter, with almost parallel sides, and is either thinly or 

 coarsely punctate. It nearly always possesses three pairs of cha- 

 racteristic whitish lunules, which arc sometimes obscured by the 

 reddish ground colour (E. rtiuscidus). Pubescence either very 

 dense, or rather scarce and inconspicuous but always short and 

 adpressed. 



Legs strong, (except in E. muscidus where they are decidedly 

 weak in comparison with the heavy body) blackish with yellowish 

 markings ; all the femora are curved and rather swollen and the 

 hind femora much more thickened and bearing on the under surface 



