F ossil Mesozoic “chrysopids” are now relatively well known after the discoveries of Panfilov (1980), Martins-Neto & Vulcano (1989a, b), Ansorge and Schluter (1990), Martins-Neto (1992, 2000), Makarkin (1992, 1994, 1997), Nel & Henrotay (1994), and others. Nevertheless, several new chrysopid-like insects have been recently discovered in the Early Cretaceous outcrop of Las Hoyas (Cuenca, Spain). Also, new mate- rial from the Late Jurassic and Early Cretaceous of China and Brazil is now available. A direct exam of the holo- type of Mesochrysopa zitteli (Meunier 1898) gave new information concerning its fore and hind wing vena- tions. These new data greatly increase our knowledge of the diversity of the Mesozoic chrysopids. If nearly all the Cenozoic Chrysopidae can be attrib- uted to the extant subfamilies Nothochrysinae and Chrysopinae, the numerous Mesozoic species that are currently attributed to this group have more uncertain positions. Furthermore, the Mesozoic family Allopteridae Zhang 1991 would be related to the enigmatic group “Mesochrysopinae” (Zhang 1991), but on the basis of unpolarized characters and without any phylogenetic analysis. Thus, there is a rather great confusion in the classification of the Mesozoic chrysopid-like Planipennia. The phylogenetic relationships between the various neuropteran families also greatly varied through time. The different authors proposed very different patterns depending of the character sets they used, based on larvae, Abstract.The Mesozoic chrysopid-like Planipennia are revised and several new genera and species are described.The new superfamily Chrysopoidea is proposed for the extant and fossil Chrysopidae, and the fossil families Liassochrysidae n. fam., Allopteridae Zhang 1991 n. sensu, Mesochrysopidae Handlirsch, 1906 n. sensu, Tachinymphidae n. fam., and Limaiidae Martins-Neto and Vulcano 1989 n. sensu. A phylo- genetic analysis of the Chrysopoidea is proposed, based on the wing venation characters. With at least the four families Allopteridae, Mesochrysopidae, Tachinymphidae, and Chrysopidae, showing different wing venation patterns, the systematic diversity and morphological disparity of the Chrysopoidea are maximal during the Late Jurassic and Early Cretaceous. The Mesozoic family Limaiidae was still present during the Paleocene/Eocene suggesting a minimal impact on the Chrysopoidea of the crisis of the diver- sity at the K-T boundary. Other Cenozoic Chrysopoidea can be attributed to the Chrysopidae sensu stricto. Résumé. Planipennia mésozoïques de la lignée « chrysope » : une approche phylogénétique (Insecta, Neuroptera). Les Planipennia mésozoïques du type « chrysope » sont révisés. Plusieurs nouveaux genres et espèces sont décrits. La nouvelle superfamille Chrysopoidea est proposée pour les Chrysopidae Schneider 1851 actuels et fossiles, et les familles fossiles Liassochrysidae n. fam., Allopteridae Zhang 1991 n. sensu, Mesochrysopidae Handlirsch 1906 n. sensu, Tachinymphidae n. fam. et Limaiidae Martins- Neto & Vulcano 1989 n. sensu. Une analyse phylogénétique des Chrysopoidea est proposée, basée sur les caractères de nervation alaire. Avec au moins les quatre familles Allopteridae, Mesochrysopidae, Tachinymphidae et Chrysopidae qui montrent des schémas de nervation alaire différents, la diversité systématique et la disparité morphologique des Chrysopoidea sont maximales durant le Jurassique supé- rieur et le Crétacé inférieur. La famille mésozoïque Limaiidae était encore présente dans le Paléocène/Eocène, suggérant un impact minime sur les Chrysopoidea de la crise à la limite Crétacé/Cénozoïque. Les autres Chrysopoidea cénozoïques peuvent être attribués aux Chrysopidae sensu stricto. Mesozoic chrysopid-like Planipennia: a phylogenetic approach (Insecta: Neuroptera) André NEL (1) , Xavier DELCLOS (2) & Arnaud HUTIN (1) (1) CNRS UMR 5143, Museum National d’Histoire Naturelle, Entomologie, 45 Rue de Buffon, F-75005, Paris, France. (2) Departament d’Estratigrafia, Paleontologia i Geociencies Marines, Facultat de Geologia, Universitat de Barcelona, E-08071, Barcelona, Spain. Ann. Soc. entomol. Fr. (n.s.), 2005, 41 (1) : 29-69. ARTICLE 29 * E-mail: anel@mnhn.fr, xdelclos@ub.edu Accepté le 21/03/2005.