Tardigrades of North Carolina
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Scientific Name:
Family:
BATILLIPEDIDAE
CALOHYPSIBIIDAE
DORYPHORIBIIDAE
ECHINISCIDAE
EOHYPSIBIIDAE
HALECHINISCIDAE
HYPSIBIIDAE
ISOHYPSIBIIDAE
ITAQUASCONIDAE
MACROBIOTIDAE
MICROHYPSIBIIDAE
MILNESIIDAE
MURRAYIDAE
PILATOBIIDAE
RAMAZZOTTIIDAE
RICHTERSIUSIDAE
STYGARCTIDAE
STYRACONYXIDAE
TANARCTIDAE
Order:
APOCHELA
"ARTHROTARDIGRADES"
ECHINISCOIDEA
PARACHELA
Class:
Heterotardigrada
Eutardigrada
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Doryphoribiidae Members:
Doryphoribius doryphorus
Doryphoribius longistipes
Doryphoribius n. species
Grevenius granulifer
Grevenius kenodontis
Pseudobiotus n. species
Thulinius augusti
Thulinius cf. saltursus
Thulinius romanoi
88 NC Records
Thulinius augusti
(Murray, 1907) - No Common Name
Habitus, DIC
Taxonomy
Class:
Eutardigrada
Order:
Parachela
Family:
Doryphoribiidae
Checklist Number:
1630.0
Synonym:
Thulinius augusti sensu lato (see Bartels et al. 2021), Macrobiotus lacustris Wenck, 1914, Macrobiotus augusti, Isohypsibius augusti, Hypsibius augusti
Taxonomic Comments:
Transferred to Thulinius and species redescribed by Bertolani et al. 1999. The genus was transferred to Doryphoribiidae by Gasiorek et al. 2019.
Species Notes:
Freshwater. Morphologically indistinguishable from the species first described from Scotland. 18S rDNA sequences are available at GenBank, but DNA from specimens from type locality was not available at the time of this study.
Identification
Online resources:
Online Photographs:
Google
,
GBIF
Species Description:
Cuticle smooth and without pigmentation. Eye spots are absent in the mounted material. The buccal aperture is surrounded by 6 lobes usually subdivided into 12-16 sublobes, of various shapes and sizes. Peribuccal lamellae should be present, but are not identifiable in the type material because of the presence of the very dark sublobes. The anterior part of the buccal cavity, immediately posterior to the peribuccal lamellae, lacks a band of granules. A wide posterior band of fine granluation is present, followed by a single row of rounded mucrones. The buccal tube is wide. Both the dorsal and ventral stylet muscle apophyses (buccal apophyses) at the anterior end of the buccal tube are crest-shaped but not well developed, as in the other species of the genus. The apophysis at the base of the buccal tube (pharyngeal apophysis) is long and thin and well developed. There are three long and thin macroplacoids in the oval pharyngeal bulb. The first and second macroplacoids are closer together than the second and third macroplacoids. The second macroplacoid is the shortest, the first macroplacoid the longest. There is no microplacoid or septulum. The curvature of the placoid rows forms a shape similar to a Grecian urn. The claws are of the Isohypsibius-type. The basal tracts of the external claws are long and thin, but after tapering towards the base they expand to form a base approximately double the width of the constricted basal tract. The internal claws of leg pairs I to III have relatively long basal tracts which taper to a blunt, slightly expanded base. Lunules are absent on all claws. On the first three pairs of legs a cuticular bar is present below the claws. This bar is as developed as the similar structure found in Thulinius ruffoi, even if it is obscured by the position of the leg or claws. There is no similar bar on the fourth pair of legs.
-Bertolani, Nelson, & Marley 1999
Body Length:
Unknown.
Key Characters:
Smooth cuticle, claw bars on I-III, claw base widely expanded into lunule on external claws.
Key Character Images
drawing Dastych 1988
ID Requirements:
Identifiable only by close inspection of key characters or by DNA analysis.
Distribution in North Carolina
Distribution:
County Map:
Clicking on a county returns the records for the species in that county.
Dates:
High Mountains (HM) ≥ 4,000 ft.
Low Mountains (LM) < 4,000 ft.
Piedmont (Pd)
Coastal Plain (CP)
Click on graph to enlarge
Habitats and Life History
Habitats:
Freshwater streams.
Abundance:
Common. This species makes up 4.89% of aquatic specimens collected in the Great Smoky Mountains National Park in Bartels' inventory.
Diet:
Possibly omnivorous.
Reproduction:
Smooth eggs deposited in exuvium.
Observation Methods:
PC and DIC.
Wikipedia
Photo Gallery for
Thulinius augusti
- No common name
Photos: 6
Recorded by: Bartels on 2002-04-07
Haywood Co.
Comment: Habitus, DIC
Recorded by: Bartels on 2002-04-07
Haywood Co.
Comment: 12 peribuccal laellae, DIC
Recorded by: Bartels on 2002-04-07
Haywood Co.
Comment: Claws, DIC
Recorded by: Bartels on 2002-04-07
Haywood Co.
Comment: Buccal apparatus, DIC
Recorded by: Bartels on 2002-04-07
Haywood Co.
Comment: Anterior, DIC
Recorded by: Bartels on 2002-04-07
Haywood Co.
Comment: Buccal apparatus, DIC