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Shalom Amir.
I like Lispe too, but it is damn difficult genus:
1. Usualy among several Lispe on same small pool there are several different species at the same time.
2. Israel is especialy bad place for Lispe observations - here you can find altugether European + Afrotropical + Indian species
3. Lispe 3,4 has strong av on t2. In Europe it means L.longicollis and I was ready to send you this misID. Fortunelly, I checked your another images. On image http://albums.timg.co.il/userFolders/9/113868/113868200810111449.jpg with copulated pair, note long curved hairs on male's hind basitarsus - Lispe cilitarsis Loew - nice image for Diptera Gellery! (3,4 - same)
Nikita