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.
Myopsocidae is a family of mouse-like barklice, belonging to the infraorder Psocetae of the order Psocodea. This family is closely related to Psocidae, with which it shares similar wing-venation, but from which it is distinguished by three-segmented tarsi.
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.
Pachytroctidae is a family of thick barklice in the order Psocodea. There are about 15 genera and at least 90 described species in Pachytroctidae.
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.
Lachesillidae is a family of Psocodea belonging to the suborder Psocomorpha. Members of the family are characterized by a rounded, free areola postica in their wings. Males have diverse sclerotized genitalic structures. The family includes more than 400 species, most of them in the genus Lachesilla.
Elipsocidae is a family of Psocodea belonging to the infraorder Homilopsocidea. Members of the family have a free areola postica. Many species are apterous. The family includes about 130 species in more than 30 genera.
Psilopsocidae is a family of Psocodea belonging to the infraorder Psocetae. Members of the family have a free areola postica and mottled wings. It is the only psocopteran family with records of wood-boring species. The family comprises one genus and seven species.
Epipsocidae is an insect family of Psocodea belonging to the suborder Psocomorpha, that includes, among others, the genera Bertkauia, Epipsocus, Epipsocopsis, Goja, and the New Guinean endemic Dicropsocus. It includes 16 genera with more than 140 species. The only European species in the family is the apterous Bertkauia lucifuga. Like the other members of the infraorder Epipsocetae, they have a labrum with two sclerotized ridges. Epipsocids are barklice found primarily in tropical regions, and one of their distinguishing characteristics is the hairy ventral surface of the forewing.
Lachesilla rossica is a rare psocopteran species described from southern Russia. The species can be found in Ukraine as well. It was discovered many years later in the valley of the Allondon river, near Geneva, Switzerland. In the latter habitat, it occurs together with Lachesilla bernardi, a congeneric species that is visually very similar to it: the examination of genitalia with a microscope is the only way to differentiate the two species. It was reported recently from Albania too.
Tapinella is a genus of thick barklice in the family Pachytroctidae. There are at least 40 described species in Tapinella.
Lachesilla floridana is a species of fateful barklouse in the family Lachesillidae. It is found in North America.
Soa is a genus of scaly-winged barklice in the family Lepidopsocidae. There are about six described species in Soa.
Pteroxanium is a genus of scaly-winged barklice in the family Lepidopsocidae. There are about eight described species in Pteroxanium.
Cerobasis is a genus of granary booklice in the family Trogiidae. There are at least 30 described species in Cerobasis.
Trichopsocus is a genus of lash-faced psocids in the family Trichopsocidae. There are about nine described species in Trichopsocus.
