Pachytroctes neoleonensis female, copyright Diane Young.

Belongs within: Psocodea.
Contains: Phthiraptera, Embidopsocinae, Liposcelis, Tapinella.

The Nanopsocetae are a group of small booklice and barklice that lack wings or have wings with a reduced venation. Phylogenetic studies have indicated that the parasitic lice of the Phthiraptera have their ancestry within this group. They may be the sister group of the Liposcelididae, with which they share a flattened body, prognathous head, fusion of meso- and metanotum, and enlarged hind femora (Yoshizawa & Lienhard 2010).

Characters (from New & Lienhard 2007): Antennae usually 15-segmented, sometimes 14-segmented, very rarely with nine or ten segments. Labial palpi with one segment; maxillary palpi without conical sensillum on second segment. Scales never present on body or wings. Commonly apterous, more rarely macropterous; wings, if present, without nodulus, carried horizontally over abdomen. Pretarsal claws with one subapical tooth or lacking tooth. Paraprocts without apical spine, lacking trichobothria. Female with gonapophyses small, glabrous.

<==Nanopsocetae [Liposceletae, Liposcelidoidea, Liposceloidea]YL10
    |    |--Sphaeropsocus Hagen 1882 [incl. Paleotroctes Enderlein 1911]M93
    |    |    `--*S. kunowii Hagen 1882M93, B50
    |    |--Badonnelia Pearman 1953L98
    |    |    `--*B. titei Pearman 1953L98
    |    `--Sphaeropsocopsis Badonnel 1963SN08
    |         |--*S. chilensis Badonnel 1963SN08
    |         |--S. argentinus (Badonnel 1962) [=Sphaeropsocus argentinus]M93
    |         |--S. micropsM93
    |         |--S. myrtleaeNL07
    |         `--S. recens (Hickman 1934) [=Sphaeropsocus recens]SN08
       |  `--Liposcelididae [Liposcelidae]YL10
       |       |  i. s.: TrichempheriaP92
       |       |         BebiosisP92
       |       |--EmbidopsocinaeYL10
       |       |--Cretoscelis Grimaldi & Engel 2006YL10
       |       |    `--C. burmitica Grimaldi & Engel 2006YL10
       |       `--LiposcelidinaeYL10
       |            |--LiposcelisYL10
       |            `--Troglotroctes Lienhard 1996YL10
       |                 `--T. ashmoleorum Lienhard 1996YL10
       `--Pachytroctidae [Pachytroctoidea]YL10
            |--Antilopsocus bilimbatus (Enderlein 1908)YL10, L02
            |--*Psylloneura simbangana Enderlein 1903NL07
            |--Palaeotroctes succinicus (Hagen 1882)B50
            |--Nanopsocus Pearman 1928 [incl. Onychotroctes Badonnel 1969]L98
            |    |--*N. oceanicus Pearman 1928L98 (see below for synonymy)
            |    |--N. falsusM93
            |    |--N. longicornisM93
            |    `--N. trifasciatusM93 [=*Onychotroctes trifasciatusNL07]
            `--Pachytroctes Enderlein 1905L98 (see below for synonymy)
                 |--*P. aegyptius Enderlein 1905L98
                 |--P. achrostaS95
                 |--P. aglyphus Badonnel 1955B55
                 |--P. ambiguus Badonnel 1955B55
                 |--‘Peritroctes’ angolensis Badonnel 1955B55
                 |--P. aurantiacus Badonnel 1949B49
                 |--P. australis Ribaga 1911B49
                 |--P. bicoloripes Badonnel 1949B49
                 |--P. bilimbatus [=*Psacadium bilimbatum]NL07
                 |--P. brasilianus [=*Neotroctes brasilianus]NL07
                 |--P. brunneus Ribaga 1911B49
                 |--‘Peritroctes’ cochinensisB50
                 |--P. dayae Smithers 1996S96
                 |--P. denisi (Badonnel 1931)NL07, L98 [=*Nymphotroctes denisiNL07]
                 |--P. dichromoscelis Badonnel 1949NL07
                 |--P. dundoensis Badonnel 1955B55
                 |--P. ealensis Badonnel 1949B55
                 |--P. enigmaticus Badonnel 1955B55
                 |--‘Psacadium’ georgiB50
                 |--P. granulosus Badonnel 1955B55
                 |--P. infuscatusS95
                 |--P. insularisS95
                 |--P. ixtapaensisS95
                 |--P. maculosusS95
                 |--P. natalensis [=*Peritroctes natalensis]NL07
                 |--P. neoleonensis García Aldrete 1986M93
                 |--P. nivecinctus Badonnel 1955B55
                 |--P. pacificusS95
                 |--P. plaumanni [=*Psyllotroctes plaumanni]NL07
                 |--P. robustus Vaughan, Thornton & New 1991NL07
                 |--P. rugosusS96
                 |--P. sericeusS95
                 |--P. sinuosus Smithers 1995NL07
                 |--P. tapinelloides Badonnel 1955B55
                 `--P. velutinaS95

*Nanopsocus oceanicus Pearman 1928L98 [=Tapinella oceanicaM93; incl. T. africana Badonnel 1948L98, Onychotroctes africanusM93, T. pallida Badonnel 1949L98]

Pachytroctes Enderlein 1905L98 [incl. NeotroctesNL07, Nymphotroctes Badonnel 1931L98, Peritroctes Ribaga 1911NL07, B50, Psacadium Enderlein 1908NL07, B50, Psyllotroctes Roesler 1940L98; Pachytroctinae]

*Type species of generic name indicated


[B49] Badonnel, A. 1949. Psocoptères de la Cote d’Ivoire. Mission Paulian-Delamare (1945). Revue Française d’Entomologie 16: 20–46.

[B55] Badonnel, A. 1955. Psocoptères de l’Angola. Diamang Publicações Culturais 26: 11–267.

[B50] Broadhead, E. 1950. A revision of the genus Liposcelis Motschulsky with notes on the position of this genus in the order Corrodentia and on the variability of ten Liposcelis species. Transactions of the Royal Entomological Society of London 101 (10): 335–388, pls 1–3.

[L02] Li F. 2002. Psocoptera of China vol. 1. Science Press: Beijing.

[L98] Lienhard, C. 1998. Faune de France. France et Régions Limitrophes. 83. Psocoptères Euro-Méditerranéens. Fédération Française des Sociétés de Sciences Naturelles: Paris.

[M93] Mockford, E. L. 1993. North American Psocoptera (Insecta). Sandhill Crane Press, Inc.

[NL07] New, T. R., & C. Lienhard. 2007. The Psocoptera of Tropical South-east Asia. Brill: Leiden.

[P92] Poinar, G. O., Jr. 1992. Life in Amber. Stanford University Press: Stanford.

[SN08] Schmidt, E. R., & T. R. New. 2008. The Psocoptera (Insecta) of Tasmania, Australia. Memoirs of Museum Victoria 65: 71–152.

[S95] Smithers, C. N. 1995. Psocoptera (Insecta) of Christmas Island. Invertebrate Taxonomy 9: 529–561.

[S96] Smithers, C. N. 1996. Psocoptera from the Western Australian wheatbelt. Gen. Appl. Ent. 27: 13–18.

[YL10] Yoshizawa, K., & C. Lienhard. 2010. In search of the sister group of the true lice: a systematic review of booklice and their relatives, with an updated checklist of Liposcelididae (Insecta: Psocodea). Arthropod Systematics and Phylogeny 68 (2): 181–195.

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