Barklouse
Guides
Rhyopsocus quercus
Rhyopsocus quercus is a species of psocid described by Mockford in 2016, belonging to the family Psoquillidae. The specific epithet 'quercus' suggests an association with oak (Quercus), though the nature of this relationship remains to be fully documented. As a member of the order Psocodea, this species is part of a group of small, often overlooked insects that occur in diverse terrestrial habitats.
Rhyopsocus texanus
Rhyopsocus texanus is a species of barklouse in the family Psoquillidae. It is distributed across Central America and North America, including the United States and Mexico. As a member of the Psocodea order, it belongs to a group of insects commonly associated with decaying organic matter and bird nests. The species was first described by Nathan Banks in 1930.
Soa flaviterminata
Soa flaviterminata is a species of booklouse in the family Lepidopsocidae, described by Enderlein in 1906. 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 species is placed in the suborder Trogiomorpha, a lineage characterized by reduced wing venation and other derived features. Like other members of its family, it likely inhabits sheltered microhabitats in tropical or subtropical environments.
Speleketor flocki
Speleketor flocki is a species of cave-dwelling psocopteran insect in the family Prionoglarididae, described by Gurney in 1943. It belongs to the suborder Trogiomorpha, a group of psocids adapted to dark, humid environments. The genus Speleketor is specialized for cave habitats, with reduced or absent eyes and elongated appendages typical of troglobitic insects.
Sphaeropsocus bicolor
Sphaeropsocus bicolor is a species of booklouse in the family Sphaeropsocidae, described by Mockford in 2013. It belongs to the order Psocodea, a group of small, soft-bodied insects commonly known as barklice and booklice. The genus Sphaeropsocus is part of a family characterized by distinctive morphological features, though specific ecological details for this species remain limited. Only a single observation has been recorded in public databases.
Steleops elegans
common barklouse
Steleops elegans is a barklouse species in the family Psocidae, first described by Banks in 1904. It belongs to a group of small, soft-bodied insects commonly associated with tree bark and other plant surfaces. The species is recorded from North America, with observations primarily from the United States. Like other members of the genus Steleops, it is presumed to inhabit forested environments where it feeds on microflora.
Steleops lichenatus
Steleops lichenatus is a species of barklouse in the family Psocidae, described by Walsh in 1863. It belongs to the genus Steleops, a group of psocids characterized by their association with lichen-covered substrates. The species is known from the United States and represents part of the diverse North American psocid fauna. As with other members of Psocidae, it likely inhabits arboreal or rock-dwelling environments where lichen growth occurs.
Stenocaecilius casarum
lizard barklouse
Stenocaecilius casarum is a species of lizard barklouse in the family Caeciliusidae. It has one of the widest geographic distributions of any barklouse species, occurring across six continents and numerous oceanic islands. The species was first described by Badonnel in 1931. Its common name refers to its lizard-like appearance and movement patterns.
Stimulopalpus japonicus
Japanese barklouse
Stimulopalpus japonicus is a tropical barklouse species in the family Amphientomidae, first described by Günther Enderlein in 1906. Males have never been documented, suggesting females may reproduce via thelytoky (parthenogenesis). The species is native to Japan but has established populations across East Asia, South Asia, and as an introduced species in the United States (since the 1940s) and Italy. It is frequently observed aggregating on rocks and concrete surfaces.
Tapinella maculata
thick barklouse
Tapinella maculata is a species of thick barklouse in the family Pachytroctidae. It is known from a broad geographic range spanning the Caribbean, Central America, North America, and South America. The species was described by Mockford and Gurney in 1956. As a member of the order Psocodea, it belongs to a group of small, often overlooked insects commonly known as barklice or booklice.
Trichadenotecnum castum
common barklouse
Trichadenotecnum castum is a uniparental barklouse species in the family Psocidae, described by Betz in 1983. It is one of three obligately parthenogenetic species derived from the biparental ancestor T. alexanderae. Populations are composed exclusively of females that reproduce via obligate thelytokous parthenogenesis. The species belongs to the T. alexanderae species complex, a group of closely related barklice distinguished primarily by reproductive mode and subtle morphological differences.
Trichadenotecnum desolatum
Trichadenotecnum desolatum is a species of barklouse in the family Psocidae, originally described by Chapman in 1930 as Psocus desolatus. It belongs to the genus Trichadenotecnum, a group of small, winged psocids commonly found on tree bark and foliage. The species is known from the southern United States and Mexico. Like other members of its family, it likely inhabits woody vegetation and feeds on microflora.
Trichadenotecnum majus
common barklouse
Trichadenotecnum majus is a species of common barklouse in the family Psocidae. It has been recorded across Europe, Northern Asia (excluding China), and North America. As a member of the barklice, it inhabits environments where it feeds on organic debris such as lichens, algae, and dead plant material on tree bark and rocks.
Trichadenotecnum merum
common barklouse
Trichadenotecnum merum is a uniparental barklouse species described in 1983 as part of the Trichadenotecnum alexanderae species complex. It reproduces exclusively through obligatory parthenogenesis (thelytoky), with populations composed entirely of females. The species was established through mating tests, life history observations, and morphological analysis across the geographic range of the species complex. As a member of the family Psocidae, it belongs to a group commonly known as common barklice.
Trichadenotecnum pardus
Trichadenotecnum pardus is a species of barklouse in the family Psocidae, first described by Badonnel in 1955. It belongs to a genus of common barklice that are frequently encountered on tree bark and foliage. The species has been recorded across multiple continents including North America, South America, Africa, and Asia, suggesting either a wide natural distribution or potential human-mediated dispersal. Like other psocids, it is likely associated with decaying organic matter and microhabitats on vegetation.
Trichadenotecnum slossonae
common barklouse
Trichadenotecnum slossonae is a species of barklouse in the family Psocidae. It was first described by Banks in 1903. The species occurs in Central America and North America. Like other members of its genus, it is likely associated with bark and lichen habitats, though specific ecological details remain limited.
Trichopsocus clarus
Trichopsocus clarus is a small psocid (barklouse) species in the family Trichopsocidae. It is distinguished by its yellow to orange coloration. The species has a remarkably broad distribution, occurring across Europe from Scandinavia to the Mediterranean, as well as on Atlantic islands and in Australia and New Zealand. It inhabits foliage of various trees.
Valenzuela boreus
lizard barklouse
Valenzuela boreus is a species of barklouse in the family Caeciliusidae, commonly referred to as a lizard barklouse. It was described by Mockford in 1965. The species is known from North America.
Valenzuela burmeisteri
Valenzuela burmeisteri is a species of barklouse in the family Caeciliusidae. It is a small, winged insect with yellowish-black coloration. The species has a broad distribution across Europe, including the British Isles, and extends into the Near East. It has been recorded from numerous European countries and island groups including the Azores, Madeira, and Canary Islands.
Valenzuela croesus
lizard barklouse
Valenzuela croesus is a species of barklouse in the family Caeciliusidae, first described by Chapman in 1930. It belongs to the order Psocodea, a group of small, often overlooked insects commonly known as barklice or booklice. The species has been documented in parts of Central America and North America.
Valenzuela distinctus
Valenzuela distinctus is a species of barklouse in the family Caeciliusidae, first described by Mockford in 1966. It belongs to the order Psocodea, a group of small, often overlooked insects commonly found in association with vegetation, bark, and leaf litter. The species has been documented across a broad geographic range including Mexico, the Caribbean, Trinidad, and the Galapagos Islands. As with many psocids, detailed ecological and behavioral studies are limited.
Valenzuela flavidus
yellow barklouse
Valenzuela flavidus is a barklouse species in the family Caeciliusidae, originally described as Psocus flavidus by Stephens in 1836 and later transferred to Valenzuela by Navás in 1924. The species exhibits complex population structure with both sexual and asexual reproduction modes: European populations are all-female and triploid, reproducing via parthenogenesis, while North American populations contain males and appear to be diploid with sexual reproduction. This cryptic diversity within the species complex has been confirmed through genomic studies.
Valenzuela gonostigma
lizard barklouse
Valenzuela gonostigma is a species of lizard barklouse in the family Caeciliusidae. It has been recorded from North America and Southern Asia, with specific distribution records from Japan, the United States, China, and Taiwan. As a member of the order Psocodea, it belongs to a group of small, often overlooked insects commonly known as barklice or booklice.
Valenzuela hyperboreus
lizard barklouse
Valenzuela hyperboreus is a species of lizard barklouse in the family Caeciliusidae, described by Mockford in 1965. It belongs to the order Psocodea, a group of small, often overlooked insects commonly known as barklice or booklice. The species has been recorded in North America, with confirmed observations in the United States.
Valenzuela indicator
lizard barklouse
Valenzuela indicator is a species of lizard barklouse in the family Caeciliusidae, first described by Mockford in 1969. It belongs to the order Psocodea, a group of small insects that includes barklice and booklice. The species has been recorded from the Caribbean region and North America, with specific distribution records from Cuba. Like other members of the genus Valenzuela, it is likely associated with dead leaf litter and bark habitats, though detailed ecological studies remain limited.
Valenzuela manteri
lizard barklouse
Valenzuela manteri is a species of lizard barklouse in the family Caeciliusidae, first described by Sommerman in 1943. It belongs to the order Psocodea, a group of small insects commonly known as barklice or booklice. The species is known from North America, with confirmed records from the United States. As a member of the genus Valenzuela, it is part of a diverse group of barklice associated with dead vegetation and bark habitats.
Valenzuela micanopi
lizard barklouse
Valenzuela micanopi is a species of barklouse in the family Caeciliusidae, first described by Mockford in 1965. It belongs to the order Psocodea, a group of small insects commonly found on vegetation, bark, and leaf litter. The species has been documented in the Caribbean Sea region and North America. As a member of the Caeciliusidae family, it is part of a diverse group of barklice that inhabit forested and vegetated environments.
Valenzuela nadleri
Valenzuela nadleri is a species of lizard barklouse in the family Caeciliusidae, described by Mockford in 1966. It is native to North America, with confirmed records from the United States. Like other members of the genus Valenzuela, it is a small, winged barklouse that inhabits bark and lichen microhabitats. The specific epithet honors nematologist Steve Nadler, professor and chair of the UC Davis Department of Entomology and Nematology.
Valenzuela perplexus
lizard barklouse
Valenzuela perplexus is a species of lizard barklouse in the family Caeciliusidae, a group of small, winged insects commonly associated with bark and foliage habitats. The species was described by Chapman in 1930 and is distributed across Central America and North America, with records from Mexico. Like other members of the genus Valenzuela, it is likely associated with dead leaf and bark microhabitats. The specific epithet "perplexus" suggests taxonomic complexity in its original description.
Valenzuela pinicola
lizard barklouse
Valenzuela pinicola is a species of lizard barklouse described by Banks in 1903. It belongs to the family Caeciliusidae, a group of small, often overlooked insects commonly known as barklice or booklice. The species is known from North America, with documented occurrences in the United States and Canada.
Valenzuela posticus
lizard barklouse
Valenzuela posticus is a species of barklouse in the family Caeciliusidae, commonly known as the lizard barklouse. It was described by Banks in 1914 and is known to occur in North America. As a member of the order Psocodea, it belongs to a group of small, often overlooked insects that inhabit bark, leaf litter, and similar microhabitats. The species has been documented in at least 28 observations on iNaturalist.
Valenzuela tamiami
Valenzuela tamiami is a species of barklouse in the family Caeciliusidae, described by Mockford in 1965. It belongs to the order Psocodea, a group of small, often overlooked insects commonly known as barklice or booklice. The species has been recorded in Cuba and North America, with extremely limited observational data.
Valenzuela totonacus
Valenzuela totonacus is a species of barklouse in the family Caeciliusidae, described by Mockford in 1966. The species belongs to the order Psocodea, a group of small, often overlooked insects commonly known as barklice or booklice. It has been recorded from the southern United States through Mexico to Guatemala.