Euseius finlandicus (Oudemans)

Kreiter, Serge, Amiri, Karima, Douin, Martial, Bohinc, Tanja, Trdan, Stanislav & Tixier, Marie-Stéphane, 2020, Phytoseiid mites of Slovenia (Acari: Mesostigmata): new records and first description of the male ofAmblyseius microorientalis, Acarologia 60 (2), pp. 203-242 : 223-224

Euseius finlandicus (Oudemans)

Seiulus finlandicus Oudemans 1915: 183 .

Typhlodromus finlandicus, Oudemans 1930a: 50 .

Typhlodromus (Typhlodromus) finlandicus, Cunlife & Baker 1953: 19 .

Amblyseius finlandicus, Athias-Henriot 1958: 34 .

Typhlodromus (Amblyseius) finlandicus, Chant 1959: 67 .

Typhlodromus (Typhlodromopsis) finlandicus, De Leon 1959: 113 .

Amblyseius (Typhlodromalus) finlandicus, Muma 1961: 288 .

Amblyseius (Amblyseius) finlandicus, Wainstein 1962: 15 .

Amblyseius (Euseius) finlandicus, Arutunjan 1970: 11 .

Euseius finlandicus, Karg 1971: 178 ; Moraes et al. 1986: 41, 2004: 66; Chant & McMurtry 2005b: 215; 2007: 118.

Typhlodromus pruni Oudemans 1929: 32 (synonymy according to Yoshida-Shaul & Chant 1995 a).

Euseius finlandicus has been reported in orchards and grapevines in various countries in Europe. This species is widespread, mainly in the Palaearctic region. It feeds on P ulmi and various eriophyid mites. It is a type IV predatory mite with its highest reproductive capacity reached when feeding on pollen ( McMurtry and Croft 1997; Broufas and Koveos 2000; McMurtry et al. 2013).

This species was already known from Slovenia ( Miklavc 2006; Bohinc and Trdan 2013; Bohinc et al. 2018). With 375 specimens in total in 21 locations, it is one of the more common and widespread in that survey.

World distribution: Albania, Algeria, Angola, Argentina, Armenia, Austria, Azerbaijan, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Canada, Caucasus Region, China, Croatia, Cyprus, Czechoslovakia, Czech Republic, Denmark, England, Finland, France, Georgia, Germany, Greece, Hungary, India, Indonesia, Iran, Italy, Japan, Kazakhstan, Latvia, Lithuania, Macedonia, Mexico, Moldova, Montenegro, Netherlands, Nicaragua, Norway, Poland, Portugal, Russia, Scandinavia, Serbia, Slovakia, Slovenia, South Korea, Spain, Sweden, Switzerland, Tunisia, Turkey, Ukraine, USA.

Specimens examined: 234 ♀♀, 61 ♂♂ and 80 immatures in total. Straža pri Raki (aasl 240 m, lat. 45°55’28”N, long. 15°24’26”E), 1 ♀ on Vitis vinifera L. ( Vitaceae ), 19/VI/2018; Ravni (aasl 300 m, lat. 45°56’44”N, long. 15°24’21”E), 4 ♀♀ on Prunus cerasus L. ( Rosaceae ), 19/VI/2018; Arnovo Selo (aasl 192 m, lat. 47°58’07”N, long. 15°33’49”E), 4 ♀♀ on P. cerasus and 24 ♀♀, 5 ♂♂ and 6 immature on Rubus fruticosus L. ( Rosaceae ), 2 ♀♀ and 1 ♂ on Juglans regia L. ( Juglandaceae ) and 10 ♀♀, 1 ♂ and 1 immature on Tilia cordata Miller (Malvaceae) , 19/VI/2018; Ljubljana, Hotel Azur (aasl 296 m, 46°02’42”N, 14°28’25”E), 10 ♀♀, 4 ♂♂ and 2 immatures on T. cordata , 13 ♀♀, 2 ♂♂ and 1 immature on Acer pseudoplatanus L. ( Aceraceae ), 3 ♀♀ and 2 ♂♂ on Malus domestica L. ( Rosaceae ), 19/VI/2018 and 11 ♀♀ and 1 ♂ on Aesculus hippocastanum L. (Hippocastaneaceae), 22/VI/2018; Bukovica (aasl 49 m, lat. 45°54’06”N, long. 13°39’30”E), 4 ♀♀ and 1 ♂ on P. cerasus and 1 immature on Ziziphus jujuba Miller (Rhamnaceae) , 20/VI/2018; Izola-Pivol (aasl 30 m, lat. 45°32’27”N, long. 13°40’51”E), 4 ♀♀ on P. cerasus , 7 ♀♀, 4 ♂♂ and 1 immature on J. regia , 21/VI/2018; Parecag (aasl 72 m, lat. 45°28’44”N, long. 13°37’49”E), 34 ♀♀, 2 ♂♂ and 2 immatures on P. cerasus , 21/VI/2018 ; Pesnica (aasl 256 m, lat. 46°37’02”N, long. 15°40’58”E), 8 ♀♀, 6 ♂♂ and and 14 immatures on M. domestica , 22/VI/2018; Ljubljana, Parc Tivoli (aasl 300 m, 46°03’16”N, 14°29’49”E) , 2 ♀♀, 1 ♂ and 1 immature on Carpinus betulus L. ( Betulaceae ) and 1 immature on Quercus robur L. ( Fagaceae ), 22/IV/2018; Ljubljana, Botanical garden (aasl 293 m, 46°02’02”N, 14°30’51”E), 10 ♀♀, 1 ♂ and 1 immature on Celtis australis L. ( Cannabaceae ), 22/ VI /2018 ; Ljubljana, Biotechnical Faculty (aasl 307 m, 46°02’54”N, 14°28’32”E), 1 ♀ and 1 ♂ on Cornus mas L. ( Cornaceae ), 18/ VI /2019 ; Sečovlje , 58a (aasl 3 m, lat. 45°28’43”N, long. 13°37’28”E) , 3 ♀♀ and 2 immatures on J. regia and 16 ♀♀, 3 ♂♂ and 13 immatures on A. hippocastanum , 19/VI/2019; Dragonja (aasl 3 m, lat. 45°27’32”N, long. 13°39’04”E), 1 ♂ and 2 immatures on M. domestica and 1 ♀ on Prunus pumila L. ( Rosaceae ), and 3 ♀♀ and 2 immatures on Diospyros kaki Thunberg (Ebenaceae) , 19/VI/2019; Bertoki (aasl 28 m, lat. 45°32’55”N, long. 13°47’13”E), 1 ♂ and 2 immatures on Prunus persica L. ( Rosaceae ) and 1 ♀ on Actinidia deliciosa (A. Chevalier) C.F. Liang & A.R. Ferguson (Actinidiaceae) , 19/VI/2019; Pragersko, Kvedrova ulica (aasl 250 m, 46°23’48”N, 13°40’11”E), 1 immature on Populus tremula L. ( Salicaceae ), 20/VI/2019; Juršinci, Gabrnik 55 (aasl 301 m, lat. 46°28’43”N, long. 15°58’2”E), 6 ♀♀, 1 ♂ and 2 immatures on M. domestica and 1 ♀ on P. persica , 20/VI/2019; Veržej, Kasač Restaurant (aasl 182 m, lat. 46°34’44”N, long. 16°09’45”E), 5 ♀♀, 4 ♂♂ and 3 immatures on A. pseudoplatanus L. ( Aceraceae ) and 1 ♂ and 1 immature on T. cordata , 20/VI/2019; Veržej, Near the football stadium (aasl 182 m, lat. 46°35’27”N, long. 16°10’1”E), 1 ♂ + 2 immatures on Quercus sessiliflora (Mattuschka) Lieblein and 22 ♀♀, 2 ♂♂ and 5 immatures on Q. robur L. ( Fagaceae ) and 2 ♀♀, 1 ♂ and 1 immature on Fraxinus excelsior L. ( Oleaceae ), 20/VI/2019; Bled, Lake (aasl 478 m, lat. 46°22’4”N, long. 14°05’06”E), 1 ♀ and 1 ♂ on Alnus glutinosa (L.) Gaertner ( Betulaceae ), 10 ♀♀, 8 ♂♂ and 5 immatures on A. pseudoplatanus and 3 ♀♀, 1 ♂ and 2 immatures on Ulmus minor L. ( Ulmaceae ), 21/VI/2019; Kranj (aasl 434 m, 46°16’6”N, 14°20’26”E), 1 ♀ on C. mas , 4 ♀♀, 2 ♂♂ and 3 immatures on C. betulus , 1 ♀ and 2 immatures on Picea abies (L.) H. Karsten ( Pinaceae ) and 1 ♂ and 2 immatures on Sorbus aucuparia L. (Rosacae), 21/VI/2019; Ljubljana, Hotel Katrca (aasl 307 m, 46°3’19”N, 14°20’26”E), 2 ♀♀ and 1 ♂ on Tilia platyphyllos Scopoli (Malvaceae) , 22/VI/2019.

Remarks: The measurements of the adult females collected agree with those provided by Ferragut and Escudero (1997) and Ferragut et al. (2010) for specimens from Spain.