Chaetonotus (Chaetonotus) microchaetus Preobrajenskaja 1926

• Main Author: Kånneby, Tobias
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Gastrotricha; Chaetonotida; Chaetonotidae; Chaetonotus; Chaetonotus microchaetus; Abisko; Lapland
• Online Access: https://doi.org/10.5281/zenodo.5632009; http://treatment.plazi.org/id/C1146C7C4C34FF8A02CDC27F18C2F81D

Chaetonotus (Chaetonotus) microchaetus Preobrajenskaja, 1926 (Fig. 6) Synonyms: Chaetonotus balsaminus Schwank, 1990 [ syn : Kisielewski 1997] Localities: Small pond, Askö, Södermanland (N 58º 49’ 23’’; E 17º 38’ 32’’), May 14, 2009; Sphagnum rock pool, Skarvesäter, Bohuslän, Sweden (N 58º 14’ 23’’; E 11º 22’ 08’’), July 16, 2009; Freshwater rockpool, Östra Båtskäret, Stockholm archipelago (N 59º 44’ 35’’; E 19º 19’ 11’’), September 18, 2007; Runmarö, Stockholm archipelago (N 59º 17’ 22’’; E 18º 47’ 56’’), May 14, 2010; Small stream, Abisko Tourist Station, Abisko (N 68º 21’ 23’’; E 18º 47’ 59’’), July 3, 2010; Wet meadow, Abisko Scientific Research Station, Lapland (N 68º 21’ 18’’; E 18º 48’ 40’’), July 4, 2010; Sphagnum spp. bog at highway E10, Lapland (N 68º 26’ 04’’; E 18º 14’ 53’’), July 1, 2010. Material: 15 specimens. TL, 171–241 µm; FL, 25–29 µm; AL, 15–19 µm; PhL, 54–60 µm; MD, 6–9 µm; CW, 14–18 µm; TNC, 29–35; DC, 17–24; DR, 33–36; VLC, 8–12; HS, 3 x 3 µm; NS, 3– 4 x 3 µm; DS, 6– 8 x 4–5 µm; HSp, 2–3 µm; NSp, 2–3 µm; DSp, 3–6 µm; VC, 3–5; VR, ~30–40; VTS, 15– 17 x 6–8 µm. Head clearly five-lobed with two pairs of cephalic sensory ciliary tufts. Cephalion present. Epi- and hypopleurae well developed. Hypostomium developed as a shield-shaped plate with two teeth. Two pairs of dorsal sensory bristles, anterior pair inserted in posterior neck region at U23–26 and posterior pair emerging from rounded triangular double-keeled scales at U79–83. Furca straight. Adhesive tubes pointing slightly outwards and constituting approximately 3/5 of the total furca length. Dorsal body surface covered by three-lobed scales with more or less rounded anterior edges. Scales with short rather thick simple spines which increase in length toward the posterior end. Scales and spine distribution follows the lateral body outline, only the median columns are more or less straight. Anterior to the furcal base an area with smaller scales with shorter spines. Two to three pairs of longer parafurcal spines, up to 13 µm in length in ...