Eylais extendens ( Müller, 1776 )

Cantallo, Harold, Gomes, Nuno, Antunes, Carlos, Martins, Duarte & Costa, Dimítri De Araújo, 2022, Checklist of water mites from mainland Portugal and its archipelagos, Zootaxa 5213 (4), pp. 336-370 : 341

Eylais extendens ( Müller, 1776)

Synonyms: Hydrachna extendens Müller, 1776 (original designation); Eylais undulosa Koenike, 1897 ; Eylais muelleri Koenike, 1897 ; Eylais limnophila Piersig, 1899 ; Eylais soari Piersig, 1899 ; Eylais similis Thon, 1899 ; Eylais tenera Thon, 1899 ; Eylais mosquensis Croneberg, 1899 ; Eylais unisinuata Croneberg, 1902 ; Eylais instabilis Halbert, 1903 ; Eylais similis gibberipons Viets, 1910; Eylais sugambra Koep, 1911 ; Eylais thienemanni Koenike, 1911 ; Eylais monofissa Szalay, 1934 ; Eylais szalayi Husiatinschi, 1939

Type material: Unknown, possibly lost.

Type locality: Denmark (probably surroundings of Copenhagen) or Norway ( Müller 1776) .

Geographical distribution: Western Palaearctic ( Davids et al. 2006).

Distribution in Portugal: Centre: Beira Litoral, Alcobaça municipality; South: Alentejo, Guadiana River-between Serpa and Beja municipalities ( Lundblad 1956; Valdecasas 1988).

Ecological notes: In oligotrophic and euritrophic slow-moving waters and sensitive to high electrolyte concentrations (absent in brackish water) ( Davids et al. 2006), present in dead twigs, plants, such as grasses, Alisma spp. , Myriophyllum spp. and Scirpus spp. ( Lundblad 1956) ; Larval insects hosts: parasitic of 26 different water beetle species from families Dytiscidae , Haliplidae , Noteridae , Lacophilidae, and Hydrophilidae ( Davids et al. 2006) .