Unnamed spotting

@Yuriana: Thank you very much for sharing the knowledge...Nice information...It always happens with increased need for food, shelter along with people mindset....Its very difficult to convince too....

thanks Francis!, i know Ashish, anyways abdomen sounds more polite than behind and its anatomically correct, thanks. And Adarsha, more details: well it is a temperate forest in Mexico City, in the mountains that sorround it, the lower part about 2700 m asl is a Quercus rugosa forest, it was on an Asteraceae species plant leaf, this site is kind of polluted with introduced plant species and cattle and agriculture, which are the main disturbances occuring here plus pollution and fragmentation, im very afraid it will disappear soon. There is a river, the last one in the city, polluted as well. And the surprise i found another pic, didnt see in detail and thought it was the same as the one i up loaded first, but its another view and the head of this fly is easier to see.

Welcome t Project Noah, excellent spotting!

Welcome Yuriana... Black thorny like part should called abdomen.

I meant details like habitat, structure etc etc..Not recommending for more photos Yuriana ...

Thanks Ashish, yes I checked up the Trachinidae family as Juan suggested and it matches the characteristics of my hairy behind fly, though i know nothing about insects. Im more into plants...Thanks for all your help people in project Noah, its the best site!! And yes, next time i have the chance to see this fly ill try to take more pics Adarsha! :)

Yuriana... you must trust Juan... like all of us. Juan is most expert on Insects... with us on Project Noah.

@YurianaMartinez: If u can do, pls add few more details of this fly for further documentation and readers....

thanks to Juan and Adarsha for the ID, saludos :)

YurianaMartinez : Welcome..ID given by me is correct i hope...same is suggested by Juan...

true Adarsha, thanks for the link ;)

Yeah..but still hard to capture it...:)
http://www.insectidentification.org/inse...
Check this id n hence the site...

Hola Juan! muchas gracias

Hola Yuriana. Esta es una mosca de la familia Tachinidae

it went away when it heard a noise i made on the litter. Next time ill be more quiet!

Ha ha ha...Flies are very difficult to capture...If u try more, they rotate aound your face...Front view might helped more to get the ID.

thanks Adarsha, i liked the shadow on the leaf...i wanted to take the picture of its face but it was very hard to walk and i was going to scare it...:)

Wow...nice spotting...