Infraorder Bibionomorpha Hennig, 1948 Family Cecidomyiidae Newman, 1835 Subfamily Micromyinae Rondani, 1856 Tribe Amediini Jaschhof, 2021 Genus Eltxo Arillo & Nel, 2000 Type species. Eltxo cretaceus Arillo & Nel, 2000 Emended diagnosis. Male and female. Cecidomyiid fly with tarsomere 1 longer than 2. Antennae with 13 flagellomeres. Ocelli absent. Wing venation reduced, without vein M or with short and evanescent vein M. Vein CuA unforked. C extending beyond Rs, far apex of wing. R1 joining C at half length of wing. Rs joining C beyond wing apex.

Published as part of PEÑALVER, ENRIQUE, ARILLO, ANTONIO & NEL, ANDRÉ, 2022, A review of the Cretaceous genus Eltxo (Diptera: Cecidomyiidae) with description of the new species Eltxo grimaldii from El Soplao amber, pp. 461-467 in Palaeoentomology 5 (5) on page 462, DOI: 10.11646/palaeoentomology.5.5.7, http://zenodo.org/record/7333739