WIthonidae, commonly called moth lacewings and giant lacewings, is a small family of winged insects of the insect order Neuroptera. The family contains a total of ten living genera, and twelve extinct genera described from fossils. The modern Ithonids have a notably disjunct distribution, while the extinct genera had a more global range. The family is considered one of the most primitive living neuropteran families. Ithonids may be phytophagous. The family has been expanded twice, first to include the genus Rapisma, formerly placed in the monotypic family Rapismatidae, and then in 2010 to include the genera that had been placed into the family Polystoechotidae. Both Rapismatidae and Polystoechotidae have been shown to nest into Ithonidae sensu lato.
WPalaeopsychops is an extinct genus of lacewing in the moth lacewings family Ithonidae. The genus is known from Early Eocene fossils found in Europe, and North America and is composed of ten species. The ten species can be informally separated into two species groups based on veination of the forewings, the "European" and "North American" groups. When first described, the genus was placed in the family Psychopsidae, but later was moved to Polystoechotidae, which itself is now considered a subgroup of the moth lacewings.
WAllorapisma is an extinct genus of lacewing in the moth lacewings family Ithonidae. The genus is solely known from two Eocene fossils found in North America. At the time of description the genus was composed of a single species, Allorapisma chuorum.
WElektrithone is an extinct genus of lacewing in the moth lacewings family Ithonidae. The genus is solely known from an Eocene fossil forewing found in Europe. At the times of description the genus was composed of a single species, Elektrithone expectata.
WPolystoechotes is a genus of giant lacewings in the family Ithonidae. There are at least two described species in Polystoechotes.
WPolystoechotes punctata is a species of giant lacewing in the family Ithonidae. It is found in Central America and North America.
WRapisma is a genus of moth lacewings, Ithonidae. They were previously placed in family of their own, Rapismatidae. They are mostly brown or green and the body is broad and the head is short and retracted under the pronotum. Some species show sexual dimorphism in wing shape. Species identification is based on genitalia characters and requires the dissection of specimens. The genus has species that are distributed along the Himalayas from Nepal to Thailand, Malaysia and South East Asia. One species, R. tamilanum, has a slightly more disjunct distribution and occurs in the Western Ghats of southern India.