Ascothoracidae Grygier 1987
Description
FAMILY ASCOTHORACIDAE GRYGIER, 1987
Diagnosis: Parasites of ophiuroids living in cysts within genital bursae. Females with bivalved, swollen, usually rounded carapace, with dorsal brood chamber. Antennules five-segmented, fourth segment usually with bifid preaxial chin, fifth segment with moveable or fixed claw or fused with claw completely. Long, setiform mandibles ending in brush of distal setules. Anterior thoracomeres with various dorsal processes or ridges. Six or five pairs of thoracopods; first thoracopod reduced in size, uniramous or absent. Abdomen fivesegmented, furcal rami elongated. Cypridiform males accompanying females with oval, bivalved carapace; thorax without dorsal processes; antennules and mouthparts resembling those of females; six or five pairs of thoracopods, uniramous or with reduced endopods on pairs 2–5. Carapace with four pairs of lattice organs.
Comment: Kolbasov & Petrunina (2019) concluded that there are no diagnostic differences between the monotypic Parascothorax Wagin, 1964 and Ascothorax Djakonov, 1914 and proposed that Parascothorox is an invalid genus. Parascothorax synagogoides Wagin, 1964 was reassigned to Ascothorax.
Ascothorax Djakonov, 1914 (ten species)
Cardiosaccus Kolbasov & Petrunina, 2019 (one species)
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Ascothoracidae
- Kingdom
- Animalia
- Order
- Dendrogastrida
- Phylum
- Arthropoda
- Scientific name authorship
- Grygier
- Taxon rank
- family
- Taxonomic concept label
- Ascothoracidae Grygier, 1987 sec. Chan, Dreyer, Gale, Glenner, Ewers-Saucedo, Pérez-Losada, Kolbasov, Crandall & Høeg, 2021
References
- Grygier MJ. 1987 a. Classification of the Ascothoracida (Crustacea). Proceedings of the Biological Society of Washington 100: 452 - 458.
- Kolbasov GA, Petrunina AS. 2019. The familyAscothoracidae Grygier, 1987, a review with descriptions of new abyssal taxa parasitizing ophiuroids and remarks on the invalidity of the genus Parascothorax Wagin, 1964 (Crustacea: Thecostraca: Ascothoracida). Marine Biodiversity 49: 1417 - 1447.