Table 6 in A huge undescribed diversity of the subgenus Hystricochaetonotus (Gastrotricha, Chaetonotidae, Chaetonotus) in Central Europe

Table 6. Comparison of Chaetonotus (Hystricochaetonotus) mirabilis sp. nov. with most similar congeners. Abbreviation: n.a. = data not available.
CharacterCh. (H.) mirabilis sp. nov.Ch. (H.) acanthophorus Stokes, 1888Ch. (H.) balsamoae Kisielewski, 1997Ch. (H.) euhystrix Schwank, 1990Ch. (H.) horridus Kolicka, 2019Ch. (H.) novenarius Greuter, 1917Body length83–107 µm80–110 µm106–138 µm150–160 µm107–134 µm111–193 µmBody shapeTenpin-shapedStockyTenpin-shapedStockyStocky, slightly botle- shapedNarrowly tenpin-shapedCephalic pleuraeIndistinctly markedIndistinctly markedClearly demarcatedIndistinctly markedClearly demarcatedIndistinctly markedMouth cuticular teethPresent (2)AbsentAbsentAbsentAbsentAbsentPharyngeal dilatationsPresentAbsentAbsentAbsentPresentAbsentFurcal indentationBroadly U-shapedDeeply V-shapedNarrowly U-shapedDeeply V-shapedBroadly V-shapedU-shapedSize of dorsal scalesHead: 3.25–4.13 × 1.90–3.85 µm Neck: 3.20–5.06 × 1.98–2.70 µm Trunk: 7.48–8.44 × 4.58–5.17 µmn.a.3.6–6.0 µmHead: 4–5 µm Trunk: 7–12 µmHead: 2.17–5.30 × 2.05–6.20 µm Neck: 2.77–6.37 × 2.35–5.91 µm Trunk: 3.03–13.43 × 2.12–13.37 µmn.a.Increase in length of dorsal spinesAbruptAbruptAbruptGradualAbruptAbruptLength of dorsal spinesHead: 2.7–3.7 µm Neck: 4.5–7.1 µm Trunk: 17–36 µmHead and neck: 4–7 µm Trunk: 16–24 µmHead: 9–11 µm Neck: 9–19 µm Trunk: 60–70 µmHead and neck: 5–7 µm Trunk: 50–70 µmHead: 0.44–13.78 µm Neck: 2.45–16.49 µm Trunk: 4.97–34.14 µmHead: 10 µm Neck: 2.5–12.0 µm Trunk: 58–85 µmLateral denticle membranePresentPresentAbsentPresentPresentAbsentNumber of lateral denticles per spine112111Elongated posteriormost lateral trunk spinesThickNarrowNarrowAbsentThickNarrowReferencesPresent studySchwank (1990)Balsamo (1983)Schwank (1990)Kolicka (2019a)Greuter (1917), Schwank (1990)