Ptenothrix Quadrangularis

''Ptenothrix'' is a genus of globular springtails in the family Dicyrtomidae. There are about 92 described species in ''Ptenothrix'' worldwide.

The genus is defined by a cluster of traits, most pertaining to chaetotaxy. These traits are as follows: large abdomen without a protuberance, with a full set of bothriotricha and posteriorly covered with small acanthoid chaetae, head and abdomen with at least some large acanthoid chaetae, hind tibiotarsus with 2-3 modified serrated chaetae, claws usually with no tunica, outer and inner chaetae on the dens often serrated, and no neosminthuroid chaetae.

Species

These species belong to the genus ''Ptenothrix'':

* '' Ptenothrix albosignata'' (Parona, 1888) Stach, J, 1957:90
* ''Ptenothrix alveola'' (Lucas, H, 1846:255) Janssens F, 2020:mihi
* ''Ptenothrix annulata'' Lin & Xia, 1985
* '' Ptenothrix argentina'' Delamare Deboutteville & Massoud, 1963:281
* '' Ptenothrix atra'' (Linnaeus, C, 1758) Börner, 1906
* '' Ptenothrix australis'' Snider, RJ, 1990:247
* ''Ptenothrix beta'' (Christiansen, K & Bellinger, P, 1981) Christiansen, K & Bellinger, P, 1998
* ''Ptenothrix blidana'' Bretfeld, G, 2001:119
* '' Ptenothrix borincana'' Soto-Adames, FN, 1988:65
* '' Ptenothrix brasiliensis'' Delamare Deboutteville & Massoud, 1963:285
* '' Ptenothrix brouquissei'' Nayrolles, 1989
* '' Ptenothrix californica'' (Christiansen, K & Bellinger, P, 1981:1234) Christiansen, K & Bellinger, P, 1998:1408
* '' Ptenothrix castanea'' Snider, RJ, 1985
* '' Ptenothrix catenata'' (Schött, 1921) Richards, 1968
* '' Ptenothrix cavicola'' Cassagnau, P et Delamare Deboutteville, C, 1955:392
* ''Ptenothrix ciliata'' Stach, J, 1957:102
* '' Ptenothrix ciliophora'' Yosii, R et Lee, C-E, 1963:17
* '' Ptenothrix corynophora'' Börner, C, 1909:130
* '' Ptenothrix curvilineata'' (Wray, 1949) Snider, RJ, 1990:256
* ''Ptenothrix dalii'' Zeppelini D, Ferreira AS et Oliveira JVLC in Oliveira, JVLC, Ferreira, AS et Zeppelini, D, 2020:2
* ''Ptenothrix deharvengi'' Nayrolles, 1989
* ''Ptenothrix delongi'' (Christiansen & Bellinger, 1981) Christiansen, K & Bellinger, P, 1998:1409
* ''Ptenothrix denticulata'' (Folsom, JW, 1899:268) Börner, C, 1909:131
* ''Ptenothrix dinghuensis'' Lin & Xia, 1985
* ''Ptenothrix dominicana'' Mari Mutt, JA, 1977:285
* ''Ptenothrix dorsalis'' (Reuter, OM, 1876:85) Linnaniemi, 1912
* ''Ptenothrix fiscellata'' Handschin, 1925
* ''Ptenothrix flavescens'' (Axelson, 1905)
* ''Ptenothrix fuscamaculata'' Bretfeld & Trinklein, 2000
* '' Ptenothrix gaoligongshanensis'' Itoh, R et Zhao, L-J, 2000:156
* '' Ptenothrix gibbosa'' Börner, C, 1906:185
* '' Ptenothrix gracilicornis'' (Schäffer, C, 1898:423) Börner, 1903
* '' Ptenothrix hawaiiensis'' Snider, RJ, 1990:74
* ''Ptenothrix higashihirajii'' Yosii, R, 1965:67
* '' Ptenothrix higumai'' Yosii, R, 1965:68
* '' Ptenothrix himalayensis'' Yosii, 1966
* '' Ptenothrix huangshanensis'' Chen, J-X et Christiansen, K, 1996:587
* '' Ptenothrix iriomotensis'' Uchida, H, 1965:92
* '' Ptenothrix janthina'' Börner, C, 1909:132
* '' Ptenothrix keralae'' Prabhoo, 1971
* '' Ptenothrix koreanensis'' Jo, S-H et Park, K-H, 2023:126
* '' Ptenothrix kuraschvilii'' Djanaschvili, 1970
* '' Ptenothrix lactea'' Uchida, 1953
* '' Ptenothrix leucostrigata'' Stach, J, 1957:98
* '' Ptenothrix macomba'' Wray, 1967
* ''Ptenothrix maculosa'' (Schott, 1891)
* ''Ptenothrix marmorata'' (Packard, 1873) Mills, HB, 1934
* '' Ptenothrix mongolica'' Yosii, 1954
* '' Ptenothrix monochroma'' Yosii, R et Lee, C-E, 1963:20
* '' Ptenothrix narumii'' Uchida, 1940
* '' Ptenothrix nigricornis'' (Ionesco, 1916) Stach, J, 1957:91
* '' Ptenothrix ocellata'' (Becker, 1902)
* '' Ptenothrix palawanensis'' Yosii, R, 1969:223
* ''Ptenothrix palmata'' (Folsom, JW, 1902) Stach, J, 1957
* '' Ptenothrix palmisetacea'' Lin & Feng, 1985
* '' Ptenothrix plumiseta'' Kang J-S et Lee B-H in Kang, J-S, Lee, B-H et Park, K-H, 2005:235
* '' Ptenothrix quadrangularis'' (Mills, HB, 1934:106)
* '' Ptenothrix renateae'' Snider, RJ, 1985
* '' Ptenothrix reticulata'' Stach, J, 1957:105
* '' Ptenothrix rubra'' Bretfeld & Trinklein, 2000
* '' Ptenothrix ryoheii'' Uchida, 1953
* ''Ptenothrix saxatilis'' Yosii, R et Lee, C-E, 1963:19
* '' Ptenothrix setosa'' (Krausbauer, 1898:24) Handschin, B, 1929:125
* '' Ptenothrix simplificata'' Stach, 1957
* '' Ptenothrix sinensis'' Lin & Feng, 1985
* '' Ptenothrix tateyamana'' Uchida, H, 1958:76
* ''Ptenothrix texensis'' (Packard, AS, 1873:42) Stach, J, 1957:80
* '' Ptenothrix tranvansoii'' Yoshii, 1994
* '' Ptenothrix tricycla'' Uchida, 1953
* ''Ptenothrix tsutsuii'' Yosii, R, 1955:398
* ''Ptenothrix unicolor'' (Harvey, 1893) Folsom, 1928
* '' Ptenothrix utingae'' Arlé & Guimaraes, 1976
* '' Ptenothrix vinnula'' Uchida, H, 1957:26
* ''Ptenothrix violacea'' Handschin, 1929
* '' Ptenothrix violaceopa'' Hüther, 1967
* ''Ptenothrix vittata'' (Folsom, 1896) Folsom, 1934
* '' Ptenothrix yakushimana'' Yosii, R, 1965:65
* '' Ptenothrix yunnana'' Itoh, R et Zhao, L-J, 2000:159

Informal taxonomy

Ptenothrix species 4 describes springtails in the genus ''Ptenothrix'' found in the western US given a number instead of a scientific name; it was discovered by Janssens F & Moorehead C, 2008. These springtails appears as a classic ''Ptenothrix'' with an overall yellow coloration. It has a dark middorsal anterior stripe and dark middorsal posterior patch. This middorsal stripe pattern distinguishes them and is best described in shape as an "Eiffel tower" pattern.

References

Further reading

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Springtail genera
Symphypleona

{{Springtail-stub