Psocomorpha
Guides
Archipsocidae
Ancient Barklice
Archipsocidae is a family of barklice in the order Psocodea, containing approximately 80 species across five genera. Members are distinguished by reduced wing venation and small body size (1.2–1.8 mm). The family exhibits alary polymorphism, where individuals within a population may have different wing morphologies. Some species are known to be viviparous, an uncommon reproductive mode among barklice.
Asiopsocus sonorensis
Asiopsocus sonorensis is a species of barklouse in the family Asiopsocidae, described by Mockford and García-Aldrete in 1976. It represents one of the few documented species in this small family of Psocodea. The species has been recorded from both North America and Central America, with the specific epithet 'sonorensis' suggesting a type locality association with the Sonoran region. A 1991 publication in The Southwestern Naturalist provided a new distributional record, augmented morphological description, and notes on its reproductive biology, indicating continued scientific interest in this poorly known taxon.
Caeciliusidae
Lizard Barklice
Caeciliusidae is a family of barklice in the order Psocodea, comprising at least 40 genera and approximately 650 described species. Members are small, soft-bodied insects commonly found on vegetation and bark. The family was originally named Caeciliidae but was renamed due to homonymy with an amphibian family. The subfamily Paracaeciliinae has been elevated to family rank as Paracaeciliidae.
Clinopsocus nigrescens
Clinopsocus nigrescens is a species of barklouse in the family Elipsocidae, described by Mockford in 2018. It belongs to the order Psocodea, a group of small, often overlooked insects that includes both parasitic lice and free-living barklice and booklice. The genus Clinopsocus is classified within the subfamily Pseudopsocinae. As a recently described species, detailed biological information remains limited.
Dasydemellidae
Shaggy Barklice
Dasydemellidae is a family of barklice within the order Psocodea, comprising approximately 30 described species. Members of this family are classified in the infraorder Caeciliusetae and are characterized by their shaggy or hairy appearance, which distinguishes them from other barklice families. The family exhibits a primarily Neotropical and Oriental distribution pattern, with documented occurrences in the Americas and Asia.
Ectopsocidae
Outer Barklice
Ectopsocidae is a family of small bark lice in the order Psocodea, containing fewer than 200 species concentrated primarily in the genus Ectopsocus. These insects are distinguished by unique wing venation features, particularly the absence of the areola postica in the forewing. They are distributed worldwide with highest diversity in Asia, and are found in dead leaf and leaf litter habitats on trees.
Epipsocidae
Elliptical Barklice
Epipsocidae is a family of barklice (Psocodea: Psocomorpha) comprising 16 genera and over 140 species. The family is primarily tropical in distribution, with the notable exception of the European endemic Bertkauia lucifuga, which is almost always apterous. Epipsocids share diagnostic morphological features with other members of the infraorder Epipsocetae, including a labrum with two sclerotized ridges and a hairy ventral surface of the forewing.
Heterocaecilius
Heterocaecilius is a genus of barklice in the family Pseudocaeciliidae, established by Lee and Thornton in 1967. Members of this genus belong to the order Psocodea, a group of small, often overlooked insects commonly found on vegetation and bark. The genus has been recorded from multiple regions including the United States, Japan, and Malaysia.
Mesopsocidae
Middle Barklice
Mesopsocidae is a family of barklice within the order Psocodea, suborder Psocomorpha. The family contains over 70 described species and is distinguished by a key morphological feature: a free areola postica in the wing venation. Members are small, soft-bodied insects commonly found in association with vegetation and bark surfaces.
Peripsocidae
Stout Barklice
Peripsocidae is a family of barklice within the order Psocodea, suborder Psocomorpha. The family contains over 300 species distributed across 12 genera, with many recently described genera closely allied to the type genus Peripsocus. Members are characterized by wing venation lacking an areola postica, a diagnostic feature distinguishing them from related families. The family has a broad geographic distribution spanning the Oriental region, East Africa, Australia, and northern Europe.
Pseudocaecilius citricola
false lizard barklouse, citrus barklouse
Pseudocaecilius citricola is a species of false lizard barklouse in the family Pseudocaeciliidae. It constructs silken webs on leaf surfaces and deposits egg-batches within these protective structures. The species has a remarkably broad pantropical and subtropical distribution spanning Africa, the Americas, Asia, and Oceania, with records from over 30 countries and island groups. It has been documented on host plants including mango (Mangifera indica) and Cordia collococca in Jamaica.
Psocetae
bark lice
Psocetae is an infraorder of bark lice within the order Psocodea, established by Pearman in 1936. It comprises four families: Hemipsocidae, Myopsocidae, Psilopsocidae, and Psocidae. Members are characterized by distinctive morphological features including an oval head with a median crevice and specialized limb structures.