Amphipsocidae is a family of hairy-winged barklice in the order Psocodea. Most species are 3.0-4.5 mm long and have many setae (hairs) on the veins and margin of the forewing. The main veins of the forewing are usually lined with two rows of setae. Like the other members of the infra-order Caeciliusetae, they have a broad, flat labrum, with well defined edges.
Philotarsidae is a family of Psocodea belonging to the suborder Psocomorpha. The family is closely related to the family Pseudocaeciliidae, both within the infraorder Philotarsetae.
Calopsocidae is a former family of Psocodea belonging to the suborder Psocomorpha. This family is now considered to be a junior synonym of Pseudocaeciliidae.
Musapsocidae is a family of Psocodea belonging to the suborder Troctomorpha. The pterostigma in their fore-wing has the characteristic of not being closed proximally. The family comprises 2 genera.
Troctopsocidae is a family of Psocodea belonging to the suborder Troctomorpha. The family consists of seven genera.
Liposcelididae is a family of booklice of the order Psocodea, belonging to the suborder Troctomorpha. Members of this family are small and flattened, and often wingless. Mesothorax and metathorax fused in wingless forms.
Asiopsocidae is a family of Psocodea belonging to the infraorder Caeciliusetae. The family is composed of 14 known species of barklice in three genera: Asiopsocus, Notiopsocus, and Pronotiopsocus. One species from each genus has been found in the United States.
Peripsocidae is a family of Psocodea belonging to the suborder Psocomorpha. Members of the family are characterised by their absence of an areola postica in their wings. Many of the recently described genera are closely allied to Peripsocus. The family includes more than 300 species.
Ectopsocidae is a family of Psocodea belonging to the suborder Psocomorpha. The family includes fewer than 200 species, most of them in the genus Ectopsocus.
Archipsocidae is a family of barklice of the order Psocodea belonging to the suborder Psocomorpha. Members of the family are characterized by their reduced wing venation. Some species are viviparous. The family includes about 80 species in five genera.
Trichopsocidae is a family of Psocodea belonging to the suborder Psocomorpha. The family includes 11 species in two genera.
Bryopsocidae a former family of Psocodea belonging to the suborder Psocomorpha. This family is now considered to be a junior synonym of the subfamily Zelandopsocinae within the family Pseudocaeciliidae.
Hemipsocidae is an insect family of Psocodea belonging to the infraorder Psocetae. Members of the family have the areola postica joined to the M vein by a crossvein, and their M vein is two-branched. This family comprises twenty-four species in three genera: Anopistoscena, Hemipsocus, and Metahemipsocus. They are commonly known as leaf litter barklice.
Caeciliusidae is a family of Psocodea belonging to the suborder Psocomorpha. The family was once named Caeciliidae, but the latter name was changed because of homonymy with the amphibian family Caeciliidae. The subfamily Paracaeciliinae was formerly in Caeciliusidae, but it has been elevated to family rank, Paracaeciliidae.
Homilopscocidea is an infraorder of Psocodea. It is probably a paraphyletic group, still in use for lack of a better solution. There are about 7 families and more than 1,200 described species in Homilopsocidea.
Ptiloneuridae is a family of Psocodea belonging to the suborder Psocomorpha. Like the other members of the infraorder Epipsocetae, they have a labrum with two sclerotized ridges.
Psocodea is a taxonomic group of insects comprising the bark lice, book lice and parasitic lice. It was formerly considered a superorder, but is now generally considered by entomologists as an order. Despite the greatly differing appearance of parasitic lice (Phthiraptera), they are believed to have evolved from within the former order Psocoptera, which contained the bark lice and book lice, now found to be paraphyletic. They are often regarded as the most primitive of the hemipteroids. Psocodea contains around 11,000 species, divided among four suborders and more than 70 families. They range in size from 1–10 millimetres (0.04–0.4 in) in length.
Paracaeciliidae is a family of bark lice in the order Psocodea. There are about 5 genera and more than 100 described species in Paracaeciliidae.
Spurostigmatidae is a family of lice in the order Psocodea. There is at least one genus, Spurostigma, in Spurostigmatidae.
Philotarsetae is an infraorder of bark lice in the order Psocodea, within the suborder Psocomorpha.
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