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I think...... Chalcosyrphus nemorum?? Chalcosyrphus sp. Xylotini Syrphidae. 
How about Chalcosyrphus frontalis ? This seems to be the only Ch. species with ligth coloured first and second pair of legs. In all other species this part of the body is dark. http://homepage2.nifty.com/syrphidae/flame2_e.htm It is a pity that this is my only photo and the abdomen is not visible. Thx for the help. 
 Chalcosyrphus frontalis の前脚と中脚は確かに黄色ですね。 ただ、腹部の黄色の部分の感じが少し違う気がします。 I feel that the atmosphere of the portion of abdominal yellow is different for a while. I need dosal view photo. And ,it is difficult identifyication of Diptera,single view phot. 
It is a female of Syritta pipiens! Greetings, Gerard Pennards 
Thanks & Welcome Gerard Pennards. m(..)m モモブトチビハナアブの♀なのですね。 最近、外国の方の投稿が増えて、(ありがたいことです・が) びびりまくってるワシなのでした。 やっぱし、はなあぶ怖い・・?? 
Thx for the ID! 
I made this correction, and some of the others that you proposed concerning the Syrphidae IDs. Thx. | 
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