“…More recently, there have been efforts to create a database for the molecular sequences of these genera. For example, to corroborate the morphological characteristics of these species ( Michalski et al, 2021 ; Stanicka et al, 2021 ), Diplotriaena obtusa has been sequenced in the blackcap S. atricapilla (in Europe), barn swallow Hirundo rustica , and cliff swallow Petrochelidon pyrrhonota (in the U.S.A.). However, these efforts remain relatively minor relative to the potential scale of movements of parasites across landscapes.…”