Sperchon (Hispidosperchon) clupeifer Piersig, 1896

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 : 349-350

Sperchon (Hispidosperchon) clupeifer Piersig, 1896

Type material: Holotype ( Piersig 1896), possibly not deposited in any scientific collection.

Type locality: Germany: Drebabach and Plothenbach streams, Thüringen ( Piersig 1896) .

Geographical distribution: Western Palaearctic ( Di Sabatino et al. 2010).

Distribution in Portugal: Centre: Beira Litoral ( Valdecasas 1988), in Fonte Fria, Mealhada, Buçaco mountain ( Lundblad 1956).

Ecological notes: Freshwater, mainly found in fast-flowing rivers( Stryjecki et al. 2018) and organic pollutiontolerant species; Larval insect hosts: Chironomidae dipterans ( Di Sabatino et al. 2010).

Sperchon (Hispidosperchon) setiger Thor, 1898

Type material: Paratype: Deposited in SMF, catalogue number 47270-1552-VIE/289 ( GBIF 2022) .

Type locality: Norway ( GBIF 2022): Roslandsaa, Jaederen ( Thor 1898b).

Geographical distribution: Western Palaearctic, remarkably Europe ( Di Sabatino et al. 2010).

Distribution in Portugal: Centre: Beira Litoral ( Valdecasas 1988), Alcobaça municipality ( Lundblad 1956).

Ecological notes: Mainly found on streams with a reduced flow; Larval insect hosts: Simuliidae and Chironomidae dipterans ( Di Sabatino et al. 2010).

Remarks: The species Sperchon meridianus Angelier, 1954 was considered a synonym of S. setiger , which was recently verified as valid species based on molecular data ( Pešić & Smit 2022).

Sperchon (Sperchon) brevirostris Koenike, 1895

Type material: Holotype ( Koenike 1895b), possible not deposited in any scientific collection. Paratype: Individual deposited in SMF, catalogue number 47069-1559-VIE/279 ( GBIF 2022) .

Type locality: Portugal: Azores Archipelago ( Koenike 1895b) .

Geographical distribution: Europe ( GBIF 2022; Di Sabatino et al. 2010).

Distribution in Portugal: Azores Archipelago ( Koenike 1895b), including Terceira Island, and São Miguel Island (Lagoa do Congro, Lagoa das Furnas, Lagoa do Fogo) ( Barrois 1896); Madeira Island ( Borges et al. 2008; Hughes et al. 1998).

Ecological notes: Freshwater ( Borges et al. 2008; Hughes et al. 1998), in flowing tributaries and standing water bodies ( Barrois 1896; Di Sabatino et al. 2010); Stenothermic species ( Pešić 1999).

Sperchon (Sperchon) glandulosus Koenike, 1886

Type material: Deposited in SMF: Holotype ( Koenike 1886), catalogue number 47174-2188-VIE/284; Paratype, catalogue number 47171-1562-VIE/284( GBIF 2022).

Type locality: Germany: Bremen ( Koenike 1886) .

Geographical distribution: Europe ( Di Sabatino et al. 2010).

Distribution in Portugal: Azores Archipelago: Faial, São Miguel and Terceira Islands (Barrois 1887).

Ecological notes: Freshwater, in tributaries and eventually lakes near to coast; Larval insects hosts: Chironomidae dipterans ( Di Sabatino et al. 2010).

Sperchon (Sperchon) thienemanni Koenike, 1907

Synonym: Sperchon rugosus Koenike, 1911

Type material: Possibly not deposited in any scientific collection.

Type locality: Germany, in Jasmund Peninsula-Rügen Island ( Koenike 1907) .

Geographical distribution: Europe ( Di Sabatino et al. 2010).

Distribution in Portugal: North: International Minho River ( Cantallo et al. 2021), tributary section “Rio Mouro, Ponte do Curto” (Monção municipality, 42º4′29.27″N, 8º23′39.12″W).

Material examined: 1 undetermined sex adult; Ponte do Curto , Portugal; 42º4′29.27″N, 8º23′39.12″W; 24 September 2020; coll by Aquamuseu Team; catalogue number NatMIP-CATr-0014 .

Ecological notes: Freshwater, common in rheohelocrenes springs, with crenophilous-type habit; larvae parasites of insect-chironomids ( Di Sabatino et al. 2010).

Remarks: First record mentioned for Portugal ( Cantallo et al. 2021).