Psocid
Guides
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.
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.
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.
Trogium pulsatorium
larger pale booklouse, deathwatch, common booklouse, grain psocid
Trogium pulsatorium is a granary booklouse in the family Trogiidae with a near-cosmopolitan distribution spanning six continents. It inhabits stored grain facilities, warehouses, and human dwellings where it feeds on dry organic matter. The species is notable for its association with stored products and its historical confusion with true deathwatch beetles due to shared common names.
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 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 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 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.