Unionicola crassipes ( 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 : 362

Unionicola crassipes ( Müller, 1776)

Synonym: Hydrachna crassipes Müller, 1776 (original designation)

Type material: Unknown, possibly lost.

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

Geographical distribution: Palaearctic ( Gerecke et al. 2016).

Distribution in Portugal: Centre: Beira Alta, in Santa Comba Dão, and Côa River, near 10 km to Vilar Formoso; South: Estremadura, in Colares-Sintra municipality; Alentejo, in Ribeira de Odivelas; Guadiana River-between Serpa and Beja municipalities ( Lundblad 1956; Valdecasas 1988).

Ecological notes: In standing and slow-moving freshwater ecosystems, with ectoparasitic larvae of insectchironomids and on larval Trichoptera ( Gerecke et al. 2016), in clear water, on a sandy substrate; present in plants, such as Azolla spp. Batrachium spp. , Carex spp. , Juncus spp. , Myriophyllum spp. , Nymphea spp. , and Scirpus spp. ( Lundblad 1956) .

Unionicola parvula Lundblad, 1954

Synonym: Unionicola (Pentatax) parvula Lundblad, 1954 (original designation)

Type material: Deposited in NRM: Holotype one female ( Lundblad 1954), Lundblad No. Präp. 4120; Paratype: One male Lundblad No. Präp. 4381 ( Lundblad 1956).

Type locality: France: Béziers ( Lundblad 1954, 1956).

Geographical distribution: France and Iberian Peninsula ( Gerecke et al. 2016; Lundblad 1956).

Distribution in Portugal: Centre: Beira Alta, in Santa Comba Dão ( Lundblad 1956).

Ecological notes: Freshwater, at slow-moderate flowing streams( Gerecke et al. 2016), on sandy substrate; present in Carex spp. plants ( Lundblad 1956).

Unionicola hankoi Szalay, 1927

Type material: Paratype: One male deposited in NRM, Lundblad No. Präp. 4501 ( Lundblad 1956) .

Type locality: Hungary: Balatonsee ( Lundblad 1956; Szalay 1927).

Geographical distribution: Eastern and Southern Europe ( Gerecke et al. 2016; Tuzovskij & Semenchenko 2015).

Distribution in Portugal: Centre: Beira Alta ( Valdecasas 1988), in Côa River, near 10 km to Vilar Formoso ( Lundblad 1956).

Ecological notes: In lentic and lotic freshwater ecosystems ( Erman et al. 2010); Found in the mantle cavity (females) or the branchiae (deutonymph forms) of mollusc-unionids ( Gerecke et al. 2016); present in Myriophyllum spp. and Juncus spp. ( Lundblad 1956) .