Unlike the pit-digging Myrmeleontidae, vermileonid larvae do not travel round and round while digging the pit trap. Instead, they simply lie at the centre with the rear end buried, and dig their heads repeatedly into the sand, flinging it out by vigorously straightening their fore ends. Finally, they cover themselves with a thin layer of sand while lying across the bottom of the cone.
The 10th and 11th segments of the larva each carries a transverse row of long hooklets that it uses in anchoring itself and in shifting sand. The fifth segment has a ventral pseudopod that helps to hold prey. Not having sickle jaws like an antlion, the larva grasps prey by lashing forward and catching the victim by bending the head down to catch it between its two fang-like jaws and its pseudopod.
Like antlion larvae, vermileonid larvae are primarily found in sandy habitats, often semideserts, usually in the shelter of rocks or bushes, and they are voracious predators. The adults are slender, fragile flies, vaguely reminiscent of small crane flies. The adults generally visit flowers for nectar, but adults of some species may not feed at all. Most vermileonid species are found in the drier regions of the western parts of Africa, from the Cape to Morocco, and also in the western parts of the Iberian Peninsula, mainly in Portugal. Info from: https://en.wikipedia.org/wiki/Vermileonidae
Photos and Video at Strovolos 20/3/2017, by Michael Hadjiconstantis