Angursa bicuspis Pollock 1979
- Dataset
- Revision of Angursa (Arthrotardigrada: Styraconyxidae) with the description of a new species from Japan
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Tardigrada
- class
- Heterotardigrada
- order
- Arthrotardigrada
- family
- Styraconyxidae
- genus
- Angursa
- species
- Angursa bicuspis
description
Fig. 1
description
In addition to confirming and re-interpreting the original observation (Pollock 1979), we recognize three overlooked characters: a paired globular body fringing the mouth (Fig. 1 B), the leg IV sensory organs and the peduncles (3 μm) that do not reach the claws (Fig. 1 D). Each leg IV sensory organ consists of a spherical papilla and a short, apical spine (Fig. 1 C). An enveloping cuticular sheath of the papilla was not evident, but may have been obscured due to the squeezed state of the specimen. The bad condition of the specimen also hindered our decisions on the presence / absence of the median cirrus, the secondary and tertiary clavae, legs II and III sensory organs, proximal pads of the internal digits and the seminal receptacles. Additional collection of specimens from the type locality is necessary for more detailed discussion on this species morphology.
diagnosis
Emended diagnosis Angursa with presence of median cirrus uncertain; primary clavae longer than lateral cirri; pedestals of primary clavae and lateral cirri absent; morphology of secondary and tertiary clavae unknown; simple, tapering cirri E present; leg I sensory organs present; presence of legs II and III sensory organs uncertain; leg IV sensory organs each as papilla with short, apical spine; robust anal papillae present; presence of seminal receptacles uncertain; presence of proximal pads of internal digits uncertain.
discussion
Remarks
materials_examined
Material examined Holotype UNITED STATES OF AMERICA • 1 adult; Massachusetts, Buzzard Bay side of Penzance Point, Woods Hole; 41 ° 31 ′ 41 ″ N, 70 ° 40 ′ 41 ″ W; 9 Jul. 1968; Hummon & Pollock leg.; USNM W 50900.
Name
- Homonyms
- Angursa bicuspis Pollock 1979