Phthiraptera

Belongs within: Nanopsocetae.Contains: Philopteridae, Trichodectidae, Anoplura, Menoponidae, Ricinidae. The Phthiraptera, true lice, are a group of small, wingless insects that live as external parasites on warm-blooded vertebrates. Historically, they have been divided between the chewing or biting Mallophaga and the sucking Anoplura but the former are undoubtedly paraphyletic to the latter. Instead, the Amblycera, which… Continue reading Phthiraptera

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Categorised as Psocodea

Anoplura

Belongs within: Phthiraptera. The Anoplura are a group of lice that have the mouthparts modified for sucking. All anoplurans are parasites of mammals. Species associated with humans are the crab louse Pthirus pubis and the head and body louse Pediculus humanus. Other species in the families Linognathidae and Haematopinus are associated with livestock. Pediculus, Pthirus… Continue reading Anoplura

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Categorised as Psocodea

Psocathropetae

Belongs within: Psocodea. The Psocathropetae are a group of barklice with a long head and long hind legs. Wings, if present, bear a nodulus, but brachypterous and micropterous forms are common in the family Psyllipsocidae (New & Lienhard 2007). Characters (from New & Lienhard 2007): Head long, vertical. Antennae sometimes with secondary annulations on flagellar… Continue reading Psocathropetae

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Categorised as Psocodea

Psocodea

Belongs within: Paraneoptera.Contains: Psocathropetae, Trogioidea, Lepidopsocidae, Psocomorpha, Nanopsocetae, Amphientometae. The Psocodea include the barklice, small insects that mostly feed on fungi and other micro-organisms, as well as the true parasitic lice. It is now generally accepted that the latter are a derived subgroup of the former. Free-living Psocodea have heads with a large, bulbous postclypeus… Continue reading Psocodea

Trogioidea

Belongs within: Psocodea. The Trogioidea is a group of small barklice with wings reduced or absent. The majority of living species are included in the subfamily Trogiinae with the South American genus Anomocopeus sometimes treated as a distinct family. The Archaeatropidae and Empheriinae are known only from the fossil record. Characters (from Li 2002; translated… Continue reading Trogioidea

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Categorised as Psocodea

Lepidopsocidae

Belongs within: Psocodea.Contains: Echmepteryx. The Lepidopsocidae are a group of barklice associated primarily with leaf litter and dead foliage. Most subfamilies have the body and wings bearing flattened scales but scales are absent in Thylacellinae (New & Lienhard 2007). Characters (from New & Lienhard 2007): Body length usually ca 2 mm, fore wing length 2–2.5… Continue reading Lepidopsocidae

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Categorised as Psocodea

Myopsocinae

Belongs within: Psocetae. The Myopsocinae are a group of barklice of the Myopsocidae in which the hind wing has veins Rs and M fused for a length, and the outer edge of the fore wing is not curved (Li 2002). In the genus Smithersia, males bear a posterior U-shaped extension on the phallosome while females… Continue reading Myopsocinae

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Categorised as Psocodea

Psocetae

Belongs within: Psocomorpha.Contains: Lichenomiminae, Myopsocinae, Psocinae, Amphigerontiinae. The Psocetae is a clade of bark or stone surface dwelling barklice that lack setae on the fore and hind wings (Yoshizawa 2002). The majority of members of the clade are divided between the families Psocidae and Myopsocidae, distinguished by the possession of two- and three-segmented tarsi, respectively.… Continue reading Psocetae

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Categorised as Psocodea

Psocus

Belongs within: Psocinae. Psocus is a genus historically used to cover a wide range of (if not all) barklice, now restricted to a more narrowly defined group found in the Holarctic realm and Africa. The type species P. bipunctatus is characterised by the presence of a submedian free sclerotised rod in the hypandrium, and a… Continue reading Psocus

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Categorised as Psocodea

Psocinae

Belongs within: Psocetae.Contains: Psocus, Psocidus, Psococerastis, Clematoscenea, Metylophorus, Sigmatoneura, Ptycta, Indiopsocus, Mecampsis, Trichadenotecnum, Loensia, Symbiopsocus. The Psocinae is a diverse group of barklice, some of which are particularly large for that order. Historically, this group has been divided between the Cerastipsocinae, with antennae usually much longer than the fore wing, and Psocinae sensu stricto, with… Continue reading Psocinae

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Categorised as Psocodea