photo 2 days ago in the desert but this type of egg sac is common also in the center of Israel usually found them under a stones Immagine: 246,77 KB
similar photo from a friend. find it on tree bark Link
BTW if u don't mind yesterday it's was a unique day, a snow storm in the desert (places above 600m) here a photo from Mizpe-Ramon a small town in the center on the highest Negev Link Ramon Crater at snow storm - 6AM in the morning