Xenasteiidae
Xenasteiidae is a family of flies Flies are insects of the Order (biology), order Diptera, the name being derived from the Ancient Greek, Greek δι- ''di-'' "two", and πτερόν ''pteron'' "wing". Insects of this order use only a single pair of wings to fly, the hindwing .... The flies are smaller than 2 mm long and are identified by the wing venation. The wings have two breaks in the costal vein and M1 is reduced becoming thinner in the medial region and not reaching the wing margin. The alula is well developed with a long fringe. References {{taxonbar, from =Q4021763 Brachycera families ...
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