Metajapyx suterraneus, copyright Christopher C. Wirth.

Belongs within: Diplura.

The Japygidae are a group of diplurans with forcipate cerci and trichobothria on segments 4–6 of the antennae (Condé & Pagés 1991).

Characters (from Condé & Pagés 1991): Trichobothria present on segments 4–6 of antenna; mandible without prostheca; labial palps present; four pairs of thoracic spiracles; pretarsus without empodium on ventral side of the two lateral claws; S1–7 with minute membranous vesicles; cerci one-segmented, forcipate.

    |–Provalljapyx Silvestri 1949 [Provalljapyginae] F90
    |–Japygellinae W39
    |    |–Allurjapyx W39
    |    |–Epijapyx W39
    |    |–Japyginus W39
    |    `–Japygellus W39
    |–Indiajapyginae W39
    |    |–Burmjapyx glauerti W39, WM70
    |    |–Parindjapyx W39
    |    |–Neojapyx W39
    |    `–Indjapyx W39
    `–Japyginae S62
         |–Opisthjapyx W39
         |–Catajapyx W39
         |–Mixojapyx W39
         |–Megajapyx W39
         |–Hecajapyx S62
         |–Occasjapyx japonicus S62, SC17
         |–Austrjapyx S62
         |–Japygianus wheeleri WM70
         |–Japyx Halliday 1863 W39
         |    |–J. solifugus WS10
         |    `–J. westraliense Wom. 1934 W39
         |–Chiljapyx Smith 1962 S62
         |    `–*C. caltagironei Smith 1962 S62
         |–Penjapyx Smith 1962 S62
         |    `–*P. altus Smith 1962 S62
         |–Hapljapyx Silvestri 1948-1949 S62
         |    `–*H. lopesi Silvestri 1948-1949 S62
         |–Nelsjapyx Smith 1962 S62
         |    |–*N. hichinsi Smith 1962 S62
         |    `–N. soldadi Smith 1962 S62
         |–Rossjapyx Smith 1962 S62
         |    |–*R. australis Smith 1962 S62
         |    `–R. anodus (Silvestri 1949) [=Hapljapyx anodus; incl. H. subanodus Silvestri 1949] S62
         |–Valpjapyx Smith 1962 S62
         |    |–*V. botani Smith 1962 S62
         |    `–V. talcae Smith 1962 S62
         |–Teljapyx Silvestri 1949 S62
         |    |–*T. riestrae Silvestri 1949 S62
         |    |–T. megalocerus (Silv. 1901) S62
         |    `–T. profundus Smith 1962 S62
         |–Merojapyx Silvestri 1949 S62
         |    |–*M. speggazzinii Silvestri 1949 S62
         |    |–M. bidentatus [=M. bidentaus (l. c.)] S62
         |    |–M. porteri Silvestri 1949 S62
         |    `–M. riverosi Silvestri 1949 S62
         |–Notojapyx WM70
         |    |–N. mjobergi CP91
         |    `–N. tillyardi CP91
         |         |–N. t. tillyardi CP91
         |         `–N. t. pagesi CP91
         `–Metajapyx W39
              |–M. froggatti (Silvestri 1930) [=Japyx (Metajapyx) froggatti; incl. J. augens Silv. 1930] W39
              |–M. glauerti (Wom. 1934) [=Japyx (Metajapyx) glauerti] W39
              |–M. leae (Silvestri 1930) [=Japyx (Metajapyx) leae] W39
              |–M. longiseta (Silvestri 1908) [=Japyx (Metajapyx) longiseta] W39
              |–M. michaelseni (Silvestri 1930) [=Japyx (Metajapyx) michaelseni] W39
              |–M. mjoebergi (Silvestri 1928) [=Japyx (Metajapyx) mjoebergi] W39
              |–M. nichollsi (Wom. 1934) [=Japyx (Metajapyx) nichollsi] W39
              |–M. onkaparinga (Wom. 1935) [=Japyx (Metajapyx) onkaparinga] W39
              |–M. suterraneus RS10
              `–M. tillyardii (Silvestri 1930) [=Japyx (Metajapyx) tillyardii] W39

*Type species of generic name indicated


[CP91] Condé, B., & J. Pagés. 1991. Diplura. In: CSIRO. The Insects of Australia: A textbook for students and research workers 2nd ed. vol. 1 pp. 269–271. Melbourne University Press: Carlton (Victoria).

[F90] Ferguson, L. M. 1990. Insecta: Diplura. In: Dindal, D. L. (ed.) Soil Biology Guide pp. 951–963. John Wiley & Sones: New York.

[RS10] Regier, J. C., J. W. Shultz, A. Zwick, A. Hussey, B. Ball, R. Wetzer, J. W. Martin & C. W. Cunningham. 2010. Arthropod relationships revealed by phylogenomic analysis of nuclear protein-coding sequences. Nature 463: 1079–1083.

[SC17] Schwentner, M., D. J. Combosch, J. P. Nelson & G. Giribet. 2017. A phylogenomic solution to the origin of insects by resolving crustacean-hexapod relationships. Current Biology 27: 1818–1824.

[S62] Smith, L. M. 1962. Japygidae of South America. 3: Japygidae of Chile. Proceedings of the Biological Society of Washington 75: 273–292.

[WM70] Wallace, M. M. H., & I. M. Mackerras. 1970. The entognathous hexapods. In: CSIRO. The Insects of Australia: A textbook for students and research workers pp. 205–216. Melbourne University Press.

[WS10] Wang, M., S. Sun, C. Li & X. Shen. 2010. Distinctive mitochondrial genome of the calanoid copepod Calanus sinicus, a useful molecular marker for phylogenetic and population studies. In: China-Russia Bilateral Symposium: Proceedings of the China-Russia Bilateral Symposium of “Comparison on Marine Biodiversity in the Northwest Pacific Ocean”, 10–11 October 2010, Qingdao (China) pp. 187–192. Institute of Oceanology, Chinese Academy of Sciences; A. V. Zhirmunsky Institute of Marine Biology, Far East Branch of the Russian Academy of Sciences.

[W39] Womersley, H. 1939. Primitive Insects of South Australia: Silverfish, springtails, and their allies. South Australian Branch of the British Science Guild: Adelaide.

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