First records of the order Schizomida from tropical hothouses in Denmark: Stenochrus portoricensis and a new species of Bamazomus (Schizomida: Hubbardiidae)

Anthropogenic transport of plants, food, and other materials has been a route of dispersal for many arthropods and some tropical species have inadvertently been introduced to European hothouses where they have established reproducing populations. This study reports the first records of the introduction of the arachnid order Schizomida to Danish hothouses: namely Stenochrus portoricensis as well as a new species of Bamazomus (Schizomida: Hubbardiidae). The latter, Bamazomus serendipitussp. n. is described. Possible origins of introductions for both species are addressed, based on comparison of newly generated and publicly available DNA barcodes, history of introduction of plants, and for B. serendipitussp. n. also morphological similarity to other Bamazomus species. Stenochrus portoricensis has likely been introduced from Costa Rica and B. serendipitussp. n. is suggested to originate from Southeast Asia.