Published March 23, 2026 | Version v1

Phytoseius Ribaga 1904

  • 1. Laboratory of Ecological Information, Graduate School of Agriculture, Kyoto University, Kyoto 606 - 8502, Japan & Department of Plant Protection, Faculty of Agriculture, Assiut University, Assiut 71526, Egypt
  • 2. NARO headquarters, Tsukuba, Ibaraki 305 - 8517, Japan
  • 3. Institute of Plant Protection, NARO, Morioka, Iwate 020 - 0123, Japan
  • 4. Laboratory of Ecological Information, Graduate School of Agriculture, Kyoto University, Kyoto 606 - 8502, Japan & Emeritus Professor, Kyoto University, Kyoto 606 - 8502, Japan & Laboratory of Ecological Information, Graduate School of Agriculture, Kyoto University, Kyoto 606 - 8502, Japan

Description

Genus Phytoseius Ribaga, 1904

Phytoseius Ribaga, 1904: 177.

Type species: Gamasus plumifer Canestrini & Fanzago, 1876: 130.

Key to Phytoseius species [13 species]

1. Setae J2 and R 1 present............................................................................ 12

- Setae J2 absent.................................................................................... 2

2. Setae R 1 present................................................................. P. ikeharai Ehara, 1967

- Setae R 1 absent................................................................................... 3

3. Ventrianal shield with one pair of pre-anal setae (JV2)..................................................... 4

- Ventrianal shield with three pairs of pre-anal setae (JV1, ZV2, JV2)........................................... 5

4. Seta s4 much longer than s6 ...................................................... P. quercicola Ehara, 1994

- Seta s4 about as long as s6 ........................................................ P. blakistoni Ehara, 1966

5. Leg IV without macrosetae......................................... P. intermedius Evans & Macfarlane, 1961

- Leg IV with one or more macrosetae................................................................... 6

6. Genu IV with a macroseta........................................................................... 7

- Genu IV without macrosetae........................................................................ 11

7. Setae s4, s6, Z4, Z5 and r3 more or less divided longitudinally................. P. crinitus Swirski & Schechter, 1961

- Setae s4, s6, Z4, Z5 and r3 not divided longitudinally...................................................... 8

8. Macroseta on tibia IV subequal in length to that on basitarsus IV........................ P. kazusanus Ehara, 1994

-. Macroseta on tibia IV much longer than that on basitarsus IV............................................... 9

9. Seta j3 about as long as r3 ........................................................... P. kishii Ehara, 1967

- Seta j3 much shorter than r3........................................................................ 10

10. Setae s4, s6, Z4 and Z5 with flat envelope.................................. P. coheni Swirski & Schechter, 1961

- Setae s4, s6, Z4 and Z5 without flat envelope........................................ P. campestris Ehara, 1967

11. Macroseta on tibia IV two to three times as long as that on basitarsus IV; genu IV without blunt setae............................................................................................ P. nipponicus Ehara, 1962

- Macroseta on tibia IV less than twice as long as that on basitarsus IV; genu IV with two blunt setae............................................................................................... P. capitatus Ehara, 1966

12. Dorsal shield with acute incision laterad of seta r3 .................... P. hongkongensis Swirski & Schechter, 1961

- Dorsal shield without acute incision laterad of seta r3 ................................ P. tenuiformis Ehara, 1978

Notes

Published as part of Negm, Mohamed W., Toyoshima, Shingo, Kishimoto, Hidenari & Amano, Hiroshi, 2026, Phytoseiid mites of Japan (Acari: Mesostigmata), pp. 51-85 in Zootaxa 5782 (1) on pages 67-78, DOI: 10.11646/zootaxa.5782.1.3, http://zenodo.org/record/19181174

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Linked records

Additional details

Biodiversity

Scientific name authorship
Ribaga
Kingdom
Animalia
Phylum
Arthropoda
Order
Mesostigmata
Family
Phytoseiidae
Genus
Phytoseius
Taxon rank
genus
Taxonomic concept label
Phytoseius Ribaga, 1904 sec. Negm, Toyoshima, Kishimoto & Amano, 2026

References

  • Ribaga, C. (1904) (1902) Gamasidi planticoli. Rivista di Patologia Vegetale, 10, 175-178.
  • Canestrini, G. & Fanzago, F. (1876) Nuovi acari italiani (Seconda Serie). Atti Societa Veneto - Trentina Scienze Naturali, 5, 130-142.
  • Ehara, S. (1967 a) Phytoseiid mites from Hokkaido (Acarina: Mesostigmata). Journal of the Faculty of Science, Hokkaido University, Series VI, Zoology, 16, 212-233.
  • Ehara, S., Okada, Y. & Kato, H. (1994) Contribution to the knowledge of the mite family Phytoseiidae in Japan (Acari: Gamasina). Journal of the Faculty of Education, Tottori University, Natural Science, 42, 119-160.
  • Ehara, S. (1966) A tentative catalogue of predatory mites of Phytoseiidae known from Asia, with descriptions of five new species from Japan. Mushi, 39, 9-30.
  • Swirski, E. & Schechter, R. (1961) Some Phytoseiid mites (Acarina: Phytoseiidae) of Hong Kong, with a description of a new genus and seven new species. Israel Journal of Agricultural Research, 11, 97-117.
  • Ehara, S. (1962) Notes on some predatory mites (Phytoseiidae and Stigmaeidae). Japanese Journal of Applied Entomology and Zoology, 6, 53-60. https://doi.org/10.1303/jjaez.6.53
  • Ehara, S. (1978) Two new species of phytoseiid mites from Hokkaido (Acarina: Phytoseiidae). Proceedings of the Japan Academy, Series B, 54, 446-450. https://doi.org/10.2183/pjab.54.446