Hydrozetes confervae ( Schrank, 1781 )

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 : 338-339

Hydrozetes confervae ( Schrank, 1781)

Synonyms: Acarus confervae Schrank, 1781 (original designation); Hydrozetes terrestris Berlese, 1910

Type material: Unknown, possibly lost.

Type locality: Austria ( Schrank 1781) .

Geographical distribution: Holarctic ( Davids et al. 2006), remarkably Europe ( GBIF 2022).

Distribution in Portugal: North: International Minho River ( Cantallo et al. 2021), in Vila Nova de Cerveira, and Valença (São Pedro da Torre) municipalities.

Material examined: 1 undetermined sex adult; Vila Nova de Cerveira , Portugal; 41º56′12.768″N, 8º45′9.108″W; October 2019; coll. by C. Antunes and E. Martins; catalogue number NatMIP -CAOr-0003 .

1 undetermined sex adult; São Pedro da Torre , Portugal; 41º59′27″N, 8º40′50.76″W; 11 May 2020; coll by C. Antunes and E. Martins; catalogue number NatMIP-CAOr-0005 .

Ecological notes: In lakes, ponds and slow-moving waters, as well as present in duckweed Lemna spp. ( Davids et al. 2006); found also in the main river stretch and in the guts of European flounder P. flesus .

Remarks: First record mentioned for Portugal ( Cantallo et al. 2021), and also represents the first occurrence for Northern Europe.

Hydrozetes lemnae ( Coggi, 1897)

Synonym: Notaspis lemnae Coggi, 1897 (original designation)

Type material: Possibly not deposited at scientific collection.

Type locality: Italy, in the area around Bologna , Italy ( Coggi 1897) .

Geographical distribution: Semi-cosmopolitan (Palaearctic, Nearctic, Ethiopic, Eastern, Australian, and Neotropical geographical zones) ( Subías 2018).

Distribution in Portugal: North: International Minho River ( Cantallo et al. 2021), in the 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; September 2020; coll. by Aquamuseu Team; NatMIP-CAOr-0011 .

Ecological notes: Freshwater, feeding on submerged plant fragments ( Pérez-Íñigo 1997). Present in macrophytes ( Cantallo et al. 2021).

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