Laelaps multispinosus Banks, 1909: 136.
Records in Baltic States: Latvia (Salmane 2001).
Hosts: A. amphibius (LV).
European distribution: Belarus, the Czech Republic, Finland, Germany, Moldova, Russia, Slovakia, Ukraine, United Kingdom (Bregetova et al. 1955; Bregetova 1956; Evans & Till 1966; Shcherbak & Dudarenko 1970; Chikilevskaya et al. 1998; Šefrová & Laštůvka 2005, Mašán & Fenďa 2010; Huhta 2015).
Notes: O. multispinosus is a specific parasite of Ondatra zibethicus (Linnaeus 1758) (Mašán & Fenďa 2010), occasionally can be found on other host species (Chikilevskaya et al. 1998; Karbowiak et al. 2023).