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.

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
    |--Sphaeropsocidae YL10
    |    |--Sphaeropsocus Hagen 1882 [incl. Paleotroctes Enderlein 1911] M93
    |    |    `--*S. kunowii Hagen 1882 M93, B50
    |    |--Badonnelia Pearman 1953 G74
    |    |    `--*B. titei Pearman 1953 G74
    |    `--Sphaeropsocopsis Badonnel 1963 SN08
    |         |--*S. chilensis Badonnel 1963 SN08
    |         |--S. argentinus (Badonnel 1962) [=Sphaeropsocus argentinus] M93
    |         |--S. microps M93
    |         |--S. myrtleae NL07
    |         `--S. recens (Hickman 1934) [=Sphaeropsocus recens] SN08
    `--+--+--Phthiraptera YL10
       |  `--Liposcelididae [Liposcelidae] YL10
       |       |--Embidopsocinae YL10
       |       |--Cretoscelis Grimaldi & Engel 2006 YL10
       |       |    `--C. burmitica Grimaldi & Engel 2006 YL10
       |       `--Liposcelidinae YL10
       |            |--Liposcelis YL10
       |            `--Troglotroctes Lienhard 1996 YL10
       |                 `--T. ashmoleorum Lienhard 1996 YL10
       `--Pachytroctidae [Pachytroctoidea] YL10
            |--Antilopsocus bilimbatus (Enderlein 1908) L02
            |--Tapinella YL10
            |--*Psylloneura simbangana Enderlein 1903 NL07
            |--Nanopsocus Pearman 1928 [incl. Onychotroctes Badonnel 1969] M93
            |    |--*N. oceanicus Pearman 1928 (see below for synonymy) M93
            |    |--N. falsus M93
            |    |--N. longicornis M93
            |    `--N. trifasciatus M93 [=*Onychotroctes trifasciatus NL07]
            |--Palaeotroctes succinicus (Hagen 1882) B50
            `--Pachytroctes Enderlein 1905 M93 (see below for synonymy)
                 |--*P. aegyptius Enderlein 1905 M93
                 |--P. achrosta S95
                 |--P. aglyphus Badonnel 1955 B55
                 |--P. ambiguus Badonnel 1955 B55
                 |--‘Peritroctes’ angolensis Badonnel 1955 B55
                 |--P. aurantiacus Badonnel 1949 B49
                 |--P. australis Ribaga 1911 B49
                 |--P. bicoloripes Badonnel 1949 B49
                 |--P. bilimbatus [=*Psacadium bilimbatum] NL07
                 |--P. brasilianus [=*Neotroctes brasilianus] NL07
                 |--P. brunneus Ribaga 1911 B49
                 |--‘Peritroctes’ cochinensis B50
                 |--P. dayae Smithers 1996 S96
                 |--P. denisi (Badonnel 1931) NL07, L98 [=*Nymphotroctes denisi NL07]
                 |--P. dichromoscelis Badonnel 1949 NL07
                 |--P. dundoensis Badonnel 1955 B55
                 |--P. ealensis Badonnel 1949 B55
                 |--P. enigmaticus Badonnel 1955 B55
                 |--‘Psacadium’ georgi B50
                 |--P. granulosus Badonnel 1955 B55
                 |--P. infuscatus S95
                 |--P. insularis S95
                 |--P. ixtapaensis S95
                 |--P. maculosus S95
                 |--P. natalensis [=*Peritroctes natalensis] NL07
                 |--P. neoleonensis García Aldrete 1986 M93
                 |--P. nivecinctus Badonnel 1955 B55
                 |--P. pacificus S95
                 |--P. plaumanni [=*Psyllotroctes plaumanni] NL07
                 |--P. robustus Vaughan, Thornton & New 1991 NL07
                 |--P. rugosus S95
                 |--P. sericeus S95
                 |--P. sinuosus Smithers 1995 NL07
                 |--P. tapinelloides Badonnel 1955 B55
                 `--P. velutina S95

*Nanopsocus oceanicus Pearman 1928 [=Tapinella oceanica; incl. T. africana Badonnel 1948, Onychotroctes africanus, T. pallida Badonnel 1949] M93

Pachytroctes Enderlein 1905 M93 [incl. Neotroctes NL07, Nymphotroctes Badonnel 1931 NL07, L98, Peritroctes Ribaga 1911 NL07, B50, Psacadium Enderlein 1908 NL07, B50, Psyllotroctes Roesler 1940 L98; 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.

[G74] Günther, K. K. 1974. Staubläuse, Psocoptera. Die Tierwelt Deutschlands 61: 1–315.

[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.

[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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