Tchesunov A.V. 2024. A new record of a tardigrade species from mangrove of Vietnam and a pictorial key for Florarctus species (Tardigrada: Heterotardigrada: Halechiniscidae) // Invert. Zool. Vol.21. No.3. P.336–347 [in English].
Invertebrate Zoology Department, Lomonosov Moscow State University, Leninskie Gory 1-12, Moscow 119234 Russia.
Alexei Tchesunov: AVTchesunov@yandex.ru, ORCID: 0000-0003-2365-910X
doi: 10.15298/invertzool.21.3.06
ABSTRACT: Florarctus hulingsi Renaud-Mornant, 1976 is recorded for the first time on Vietnam coast in silty sand in upper sublittoral zone. Up to date, the species was known in only Mediterranean, Brazil coast, Celtic Sea, Seychelles and Maldives but not in the Pacific region. The species is redescribed and illustrated, secondary clavae and cephalic vesicles are revealed for the first time for this species. A pictorial key for Florarctus species identification is constructed.
KEY WORDS: Florarctus, Heterotardigrada, mangroves, marine tardigrades, pictorial key, redescription, Tardigrada, Vietnam.