Tixier M.-S.
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ELECTRONIC POLYTOMOUS KEY TO SPECIES OF THE SUB-GENUS TYPHLODROMUS (TYPHLODROMUS) SCHEUTEN (ACARI: PHYTOSEIIDAE) OF THE WORLD

 

 

How to cite : Tixier M.S. 2012. Electronic polytomous key to species of the sub-genus Typhlodromus (Typhlodromus) Scheuten (Acari: Phytoseiidae) of the world. Typhlodromuskeypresentation.html

 

Dorsal view of a female of Typhlodromus (Typhlodromus)

 

 

 

 

 

 

 

 

 

The species considered in the key
The sub-genus Typhlodromus (Typhlodromus) Scheuten is included in the sub-family Typhlodrominae, it currently comprises 54 valid species. It is characterized by absence of Z1 and S5.

We considered the 54 valid species according the last world catalogue of the family (Moraes et al. 2004). Furthermore, species described afterwards have been added: Typhlodromus (Typhlodromus) moricola Ehara & Toyoshima 2006, Typhlodromus (Typhlodromus) difficilis Kolodochka 2003, Typhlodromus (Typhlodromus) shoshae Palevsky et al. 2009, Typhlodromus (Typhlodromus) octogenipilus Kreiter, Tixier & Duso 2010, Typhlodromus (Typhlodromus) psidium Basha et al. 2004, Typhlodromus (Typhlodromus) mutatus Kolodochka 2002, Typhlodromus (Typhlodromus) nerminae El-Banhawy & Knapp 2011, Typhlodromus (Typhlodromus) wawerus El-Banhawy & Knapp 2011, Typhlodromus (Typhlodromus) neomagdalenae Zannou, Moraes & Oliveira 2008, Typhlodromus (Typhlodromus) oresibious Papadoulis 2009, T. (T.) sirikariensis Kapaxidi & Papadoulis 2012 and Typhlodromus (Typhlodromus) thuriferus Ferragut 2012.

One species, Typhlodromus (Typhlodromus) rarus (Wainstein) (synonym of Typhlodromus (Typhlodromus) tranquillus Livshitz & Kuznetsov) was excluded from the key, as the original description obviously shows that it belongs the subgenus Typhlodromus (Anthoseius).

Illustrations of the female of each species will be added when copyrights will be obtained.

The characters considered in the key

Twenty eight characters were used to characterize each of the 53 species. Among these characters, eight are discrete and 20 are continuous (seta lengths). The continuous characters correspond to the measurements of setae on the dorsal shield and on the tarsus of the leg IV. The discrete characters correspond to absence or presence of different features (setae, pores ...). For the continuous characters, each species has been characterized by a range for a variation (min-max) using the work of Tixier (2012). Illustrations of nearly all the characters are given to help the user.

How to use the key

The polytomous key was constructed using the software DELTA 1.04 (DEscription Language for Taxonomy) (Dallwitz 2009, Coleman et al. 2010) in MS-Windows. DELTA is a modern software package that manages taxonomic research (Dallwitz 2009). To use DELTA,

The user needs to download this software package for using the key.

It can be downloaded for free from the website http://delta-intkey.com (Programs and documentation, Programs, All programs (including Intkey)). A complete description of the software and of its advantages is given in Coleman et al. (2010).

When clicking on the following link, the user will download the repertory included the key. Once the repertory unzipped, the user will access to the key, opening the file intkey.ink

 

 

Click here to access the key

References

Basha A.E., Mahrous M.E., El-Sayed M.M. (2004) Descriptions of two new species of phytoseiid mites (Acari: Phytoseiidae) from Egypt. International Journal of Acarology 30(4): 347-350.

Chant D.A., McMurtry J.A. (2007) Illustrated keys and diagnoses for the genera and subgenera of the Phytoseiidae of the world (Acari: Mesostigmata). Indira Publishing House, 220pp.

Coleman C.O., Lowry J.K., Macfarlane T. (2010) DELTA for Beginners: An introduction into the taxonomy software package DELTA. ZooKeys 45: 1-75.

Dallwitz M.J. (2009) Overview of the DELTA System. http://delta-intkey.com/www/overview.htm.

Ehara S., Toyoshima S., Amano H. (2006) Three new species of phytoseiid mites (Acari : Phytoseiidae) from Japan. International Journal of Acarology 32(4): 345-350.

El-Banhawy E., Knapp M. (2011) Mites of the family Phytoseiidae Berlese from Kenya (Acari: Mesostigmata). Zootaxa 2945: 1-176.

Kolodochka L.A. (2002) A New Species of the Genus Typhlodromus (Parasitiformes, Phytoseiidae) from Ukraniane Carpathians. Vestnik zoologii 36(6): 81-84.

Kolodochka L.A. (2003) A new species of the genus Typhlodromus (Parasitiformes, Phytoseiidae) from South-West Crimea. Vestnik zoologii 37: 77-79.

Moraes G.J., McMurtry J.A., Denmark H.A., Campos C.B. (2004) A revised catalog of the mite family Phytoseiidae. Zootaxa 434: 1-494.

Palevsky E., Gala S., Ueckermann E.A. (2009) Phytoseiidae from date palms in Israel with descriptions of two new taxa and a key to the species found on date palms worldwide (Acari: Mesostigmata). Journal of Natural History 43: 1715-1747.

Papadoulis G.T., Emmanouel N.G., Kapaxidi E.V. (2009) Phytoseiidae of Greece and Cyprus (Acari: Mesostigmata). Indira Publishing House, West Bloomfield, Michigan (USA) 200 pp.

Tixier M.-S. 2012. Approaches to assess intraspecific variations of morphological continuous characters: the case study of the family Phytoseiidae (Acari: Mesostigmata). Cladistics, 1-14 online first DOI: 10.1111/j.1096-0031.2012.00394.x.

Tixier M.-S., Klaric V., Kreiter S, Duso C. (2010) Phytoseiid mite species from Croatia, with description of a new species of the genus Typhlodromus (Typhlodromus). Annals of Entomological Society of America 103(2): 165-180.

Stathakis T.I., Kapaxidi E.V., Papadoulis G.T. (2012) A new record and two new species of the genus Typhlodromus Scheuten (Acari: Phytoseiidae) from Greece. International Journal of Acarology 38 (7) : 605-611.

Ueckermann E.A., Zannou I.D., Moraes G.J. de, Oliveira A.R., Hanna R., Yaninek J.S. (2008) Phytoseiid mites of the tribe Typhlodromini (Acari: Phytoseiidae) from sub-Saharan Africa. Zootaxa 1901: 1-122.