Austeruseus

• Main Authors: Trygvadóttir, Birna Vár, Kristensen, Reinhardt Møbjerg
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2011
• Subjects: Biodiversity; Taxonomy; Animalia; Tardigrada; Eutardigrada; Parachela; Eohypsibiidae; Austeruseus; Faroe Islands
• Online Access: https://doi.org/10.5281/zenodo.5627937; http://treatment.plazi.org/id/0385CF175C10B6134EEBAA0363A3C928

Genus: Austeruseus , nov. gen. Diagnosis. Eohypsibiidae with a rigid straight, buccal tube. The mouth is tubular, not trumpet-shaped as in Bertolanius Özdikmen, 2008 and Eohypsibius Kristensen, 1982. Lateral on the buccal tube are 2 to 6 hook-shaped appendages present for insertion of the stylet muscles. Ventral strengthening bar absent, but cuticular enforcement can be seen as a thin line. Mouth opening with 14 peribuccal lamellae. Claws of the Eohypsibiidae type. Eggs ornamented and deposited free. Composition. Austeruseus faeroensis , nov. sp. (type species), Austeruseus balduri , nov. sp. and Austeruseus rokuri , nov. sp. Etymology. austerus (latin) – rigid, pertaining to the rigid buccal tube. Differential diagnosis. The genus Austeruseus can be distinguished from Bertolanius and Eohypsibius by the buccal-pharyngeal apparatus, which is slender ( pt buccal tube width 8.3–14.4) and straight throughout its length, as opposed to being wide and trumpet-shaped in Bertolanius and Eohypsibius . Austeruseus does not possess posterior annulations on the buccal tube as seen in the genus Eohypsibius . The presence of 2 to 6 hook-shaped apophyses for the insertion of stylet muscles, compared with crest-shaped dorsal and ventral apophyses for the insertion of stylet muscles with two pairs of caudal hooks ( Eohypsibius ) or crest shaped apophyses for the insertion of stylet muscles with a single pair of caudal hooks ( Bertolanius ). Published as part of Trygvadóttir, Birna Vár & Kristensen, Reinhardt Møbjerg, 2011, Eohypsibiidae (Eutardigrada, Tardigrada) from the Faroe Islands with the description of a new genus containing three new species, pp. 39-62 in Zootaxa 2886 on pages 44-45, DOI: 10.5281/zenodo.277617